Galera como fazer um item menu chamar uma classe de um outro pacote?

[rayner]

Assim, eu tenho uma tela com os menus, e tal, aí em ferramentas eu tenho o menu calculadora, agora eu qro instanciar, a calculadora(do pacote ferramentas)para o pacote tela principal, que é onde contem os menus, a minha calculadora tem tres classes, fiz ela na mão, aí a classe que tem os menus eu a fiz atraves da paleta do netBeans, aí agora eu iniciei o evento action performed e coloquei assim:
Calculadora cc= new Calculadora();
cc.setVisible(true);

Aí da um erro no setVisble, mando eu criar um método em calculador.ferramentas.
Sim, ah, a minha calculadora tem tres classes, a principal(Calculadora), a calculadoraPanel e a calculadoraFrame. Ajudemme por favor.

[ViniGodoy]

Você deve tornar seu calculadora frame visível.

Primeiro de tudo, adicione um import para seu pacote. Se ele chamar ferramentas será algo como:

Em seguida, no seu botão, basta fazer:

CalculadoraFrame calculadora = new CalculadoraFrame(); calculadora.setVisible(true);

[rayner]

[quote=ViniGodoy]Você deve tornar seu calculadora frame visível.

Primeiro de tudo, adicione um import para seu pacote. Se ele chamar ferramentas será algo como:

Em seguida, no seu botão, basta fazer:

CalculadoraFrame calculadora = new CalculadoraFrame(); calculadora.setVisible(true);[/quote]

Cara vou aqui postar o código, um que eu peguei e estou fazendo tendo exemplo atraves dele. Por que ainda está dando erro.

public class Calculadora
{
public static void main(String[] args)
{
JFrame frame = new CalculatorFrame();
frame.show();
}

}

//agora a outra classe

class CalculatorFrame extends JFrame
{

JTextArea t;

public CalculatorFrame()
{
setTitle("Calculadora - Sistema DR");
setSize(435,240);
setResizable(false);//para nao aumentar ou diminuir a tela
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});

Container contentPane = getContentPane();
contentPane.add(new CalculatorPanel());

// -------------- Menu -----------------------

MenuBar bar = new MenuBar();

Menu calc = new Menu("Calculadora");
MenuItem exit = new MenuItem(" Sair ");
calc.add(exit);
exit.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
System.exit(0);
}
});
bar.add(calc);

Menu about = new Menu("Sobre");
bar.add(about);

MenuItem about1 = new MenuItem(" Calculadora");
about.add(about1);
about1.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
JOptionPane.showMessageDialog(null, " "

• "\n "
  +"\n ");
  }
  });
  bar.add(about);

setMenuBar(bar);
//--------------------------------------------
}

//A ultima classe da calculadora

package ferramentas;

/**
*

• @author MDA
  /
  import java.awt.;
  import java.awt.event.;
  import java.math.;
  import javax.swing.*;

class CalculatorPanel extends JPanel implements ActionListener
{
public CalculatorPanel()
{
setLayout(null);
setBackground(Color.green);

//------------ Display -----------------------
display = new JTextField("0");
display.setEditable(false);
add(display);
display.setBounds(10,15,300,25);

//------------ Botões ------------------------
b1 = new Button("0");
b1.setBackground(Color.white);
b1.setForeground(Color.blue);
add(b1);
b1.setBounds(10,155,30,30);
b1.addActionListener(this);

b2 = new Button("1");
b2.setBackground(Color.white);
b2.setForeground(Color.blue);
add(b2);
b2.addActionListener(this);
b2.setBounds(10,120,30,30);

b3 = new Button("4");
b3.setBackground(Color.white);
b3.setForeground(Color.blue);
add(b3);
b3.addActionListener(this);
b3.setBounds(10,85,30,30);

b4 = new Button("7");
b4.setBackground(Color.white);
b4.setForeground(Color.blue);
add(b4);
b4.addActionListener(this);
b4.setBounds(10,50,30,30);

b5 = new Button("+/-");
b5.setBackground(Color.white);
b5.setForeground(Color.blue);
add(b5);
b5.addActionListener(this);
b5.setBounds(45,155,30,30);

b6 = new Button("2");
b6.setBackground(Color.white);
b6.setForeground(Color.blue);
add(b6);
b6.addActionListener(this);
b6.setBounds(45,120,30,30);

b7 = new Button("5");
b7.setBackground(Color.white);
b7.setForeground(Color.blue);
add(b7);
b7.addActionListener(this);
b7.setBounds(45,85,30,30);

b8 = new Button("8");
b8.setBackground(Color.white);
b8.setForeground(Color.blue);
add(b8);
b8.addActionListener(this);
b8.setBounds(45,50,30,30);

b9 = new Button(".");
b9.setBackground(Color.white);
b9.setForeground(Color.blue);
add(b9);
b9.addActionListener(this);
b9.setBounds(80,155,30,30);

b10 = new Button("3");
b10.setBackground(Color.white);
b10.setForeground(Color.blue);
add(b10);
b10.addActionListener(this);
b10.setBounds(80,120,30,30);

b11 = new Button("6");
b11.setBackground(Color.white);
b11.setForeground(Color.blue);
add(b11);
b11.addActionListener(this);
b11.setBounds(80,85,30,30);

b12 = new Button("9");
b12.setBackground(Color.white);
b12.setForeground(Color.blue);
add(b12);
b12.addActionListener(this);
b12.setBounds(80,50,30,30);
b13= new Button("+");
b13.setBackground(Color.white);
b13.setForeground(Color.gray);
add(b13);
b13.addActionListener(this);
b13.setBounds(115,155,30,30);

b14 = new Button("-");
b14.setBackground(Color.white);
b14.setForeground(Color.gray);
add(b14);
b14.addActionListener(this);
b14.setBounds(115,120,30,30);

b15 = new Button("\u00d7");
b15.setBackground(Color.white);
b15.setForeground(Color.gray);
add(b15);
b15.addActionListener(this);
b15.setBounds(115,85,30,30);

b16 = new Button("\u00f7");
b16.setBackground(Color.white);
b16.setForeground(Color.gray);
add(b16);
b16.addActionListener(this);
b16.setBounds(115,50,30,30);

b17= new Button("=");
b17.setBackground(Color.green);
b17.setForeground(Color.black);
add(b17);
b17.addActionListener(this);
b17.setBounds(150,120,30,65);

b18 = new Button("%");
b18.setBackground(Color.white);
b18.setForeground(Color.red);
add(b18);
b18.addActionListener(this);
b18.setBounds(150,85,30,30);

b19 = new Button("sqrt");
b19.setBackground(Color.white);
b19.setForeground(Color.red);
add(b19);
b19.addActionListener(this);
b19.setBounds(150,50,30,30);

b20= new Button("E");
b20.setBackground(Color.gray);
b20.setForeground(Color.orange);
add(b20);
b20.addActionListener(this);
b20.setBounds(195,155,30,30);

b21 = new Button("PI");
b21.setBackground(Color.gray);
b21.setForeground(Color.orange);
add(b21);
b21.addActionListener(this);
b21.setBounds(195,120,30,30);

b22 = new Button("n!");
b22.setBackground(Color.gray);
b22.setForeground(Color.orange);
add(b22);
b22.addActionListener(this);
b22.setBounds(195,85,30,30);

b23 = new Button("In");
b23.setBackground(Color.gray);
b23.setForeground(Color.orange);
add(b23);
b23.addActionListener(this);
b23.setBounds(195,50,30,30);

b24= new Button("sin");
b24.setBackground(Color.gray);
b24.setForeground(Color.orange);
add(b24);
b24.addActionListener(this);
b24.setBounds(230,155,30,30);

b25 = new Button("cos");
b25.setBackground(Color.gray);
b25.setForeground(Color.orange);
add(b25);
b25.addActionListener(this);
b25.setBounds(230,120,30,30);

b26 = new Button("tan");
b26.setBackground(Color.gray);
b26.setForeground(Color.orange);
add(b26);
b26.addActionListener(this);
b26.setBounds(230,85,30,30);

b27 = new Button("log");
b27.setBackground(Color.gray);
b27.setForeground(Color.orange);
add(b27);
b27.addActionListener(this);
b27.setBounds(230,50,30,30);

b28= new Button("asin");
b28.setBackground(Color.gray);
b28.setForeground(Color.orange);
add(b28);
b28.addActionListener(this);
b28.setBounds(265,155,30,30);

b29 = new Button("acos");
b29.setBackground(Color.gray);
b29.setForeground(Color.orange);
add(b29);
b29.addActionListener(this);
b29.setBounds(265,120,30,30);

b30 = new Button("atan");
b30.setBackground(Color.gray);
b30.setForeground(Color.orange);
add(b30);
b30.addActionListener(this);
b30.setBounds(265,85,30,30);

b31 = new Button("mod");
b31.setBackground(Color.gray);
b31.setForeground(Color.orange);
add(b31);
b31.addActionListener(this);
b31.setBounds(265,50,30,30);

b32= new Button("x^2");
b32.setBackground(Color.gray);
b32.setForeground(Color.orange);
add(b32);
b32.addActionListener(this);
b32.setBounds(300,155,30,30);

b33 = new Button("x^3");
b33.setBackground(Color.gray);
b33.setForeground(Color.orange);
add(b33);
b33.addActionListener(this);
b33.setBounds(300,120,30,30);

b34 = new Button("x^y");
b34.setBackground(Color.gray);
b34.setForeground(Color.orange);
add(b34);
b34.addActionListener(this);
b34.setBounds(300,85,30,30);

b35 = new Button("e^x");
b35.setBackground(Color.gray);
b35.setForeground(Color.orange);
add(b35);
b35.addActionListener(this);
b35.setBounds(300,50,30,30);

b36= new Button("M");
b36.setBackground(Color.blue);
b36.setForeground(Color.yellow);
add(b36);
b36.addActionListener(this);
b36.setBounds(345,155,30,30);

b37 = new Button("RM");
b37.setBackground(Color.blue);
b37.setForeground(Color.yellow);
add(b37);
b37.addActionListener(this);
b37.setBounds(345,120,30,30);

b38 = new Button("M2");
b38.setBackground(Color.blue);
b38.setForeground(Color.yellow);
add(b38);
b38.addActionListener(this);
b38.setBounds(345,85,30,30);

b39 = new Button("M3");
b39.setBackground(Color.blue);
b39.setForeground(Color.yellow);
add(b39);
b39.addActionListener(this);
b39.setBounds(345,50,30,30);

b40= new Button("C");
b40.setBackground(Color.red);
b40.setForeground(Color.white);
add(b40);
b40.addActionListener(this);
b40.setBounds(385,120,30,65);

b41 = new Button("CE");
b41.setBackground(Color.red);
b41.setForeground(Color.white);
add(b41);
b41.addActionListener(this);
b41.setBounds(385,50,30,65);

}

public void actionPerformed(ActionEvent evt)
{
String s = evt.getActionCommand();

if (s.equals(“C”))
{
operando1 = 0;
op = “=”;
display.setText(“0”);
start = true;
}
else if(‘0’ <= s.charAt(0) && s.charAt(0) <= ‘9’|| s.equals("."))
{
if (start)
{
display.setText(s);
start = false;
}
else
{
display.setText(display.getText() + s);
}
}
else
{

if (s.equals("PI"))
{
double aux = 1;
aux = Math.PI;
display.setText("" + aux);

}
if(s.equals("E"))
{
double aux = 1;
aux = Math.E;
display.setText("" + aux);
}
if(s.equals("%"))
{
double x = Double.parseDouble(display.getText());
double total = (operando1*x)/100;
display.setText("" + total);
}
if(s.equals("+/-"))
{
double total = 0;
double x = Double.parseDouble(display.getText());
if (x != 0)
total = (x * -1);
display.setText("" + total);
}

String memoria = "M RM M2 M3";

if(memoria.indexOf(s)!= -1)
{
JOptionPane.showMessageDialog(
null, "Este recursos será implementado na Calculadora verão 2. Aguarde !!!");
}

String comp = "sqrt In n! PI log tan cos sin x^2"

• "x^3 asin acos atan e^x" ;

if (comp.indexOf(s) != -1)
{
calculate1(Double.parseDouble
(display.getText()),s);
start = true;
}

String comum = "= + - * / \u00d7 \u00f7 x^y mod";

if (s.equals("CE"))
{
display.setText("" + operando1);
op = s;
start = true;
}else if (comum.indexOf(s) != -1)
{
double x = Double.parseDouble(display.getText());
calculate(x);
op = s;
start = true;
}

}
}

public void calculate1(double opr,String op)
{
if (op.equals("sqrt")) opr = Math.sqrt(opr);
else if(op.equals("In")) opr = Math.log(opr);
else if(op.equals("n!")) opr = fatorial(opr);
else if(op.equals("log")) opr = Math.log(opr);
else if(op.equals("tan")) opr = Math.tan((oprMath.PI) / 180);
else if(op.equals("cos")) opr = Math.cos((oprMath.PI) / 180);
else if(op.equals("sin")) opr = Math.sin((opr*Math.PI) / 180) ;
else if(op.equals("asin")) opr = Math.asin(opr);
else if(op.equals("acos")) opr = Math.acos(opr);
else if(op.equals("atan")) opr = Math.atan(opr);
else if(op.equals("x^2")) opr = Math.pow(opr,2);
else if(op.equals("x^3")) opr = Math.pow(opr,3);
else if(op.equals("e^x")) opr = Math.exp(opr);

display.setText("" + opr);
}

public double fatorial(double nro)
{
if(nro <=1)
return 1;
else
return nro*fatorial(nro-1);
}

public double umSobre(double nro)
{
if (nro != 0)
return ((1)/(nro));
else
return 0;
}

public void calculate(double n)
{

if (op.equals("+")) operando1 += n;
else if (op.equals("-")) operando1 -= n;
else if (op.equals("\u00d7")) operando1 *= n;
else if (op.equals("\u00f7")) operando1 /= n;
else if (op.equals("=")) operando1 = n;
else if (op.equals("x^y")) operando1 = Math.pow(operando1,n);
else if (op.equals("mod")) operando1 %= n;

display.setText("" + operando1);
}

private JTextField display;
private double operando1 = 0;
private BigDecimal memory[];
private boolean start = true;
private String op = "=";
private Button b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11,b12,b13,b14,
b15,b16,b17,b18,b19,b20,b21,b22,b23,b24,b25,b26,
b27,b28,b29,b30,b31,b32,b33,b34,b35,b36,b37,b38,
b39,b40,b41;
}

//pronto por ultimo o frame que eu quero instanciar-las

mport ferramentas.Data;
import ferramentas.*;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
/**
*

• @author Kayo
  /
  public class Tela_DT extends javax.swing.JFrame {
  Data mostra_data;
  /* Creates new form TelaPrincipal */
  public Tela_DT() {
  initComponents();
  mostra_data = new Data();
  mostra_data.le_data();
  L_Data.setText(mostra_data.getDia()+", "//mostrar o dia do mês
  +mostra_data.getDia_semana()+" de "//Mostrar o dia da semana
  +mostra_data.getMes()+" de "//Mostrar o mês
  +mostra_data.getAno());//Mostrar o ano
  //Mostrar a hora atualizada
  mostra_data.le_hora();
  L_Hora.setText("Hora atual"+mostra_data.getHora());
  //Iniciando o component timer
  timer1.start();
  //fazer a tela mudar forma
  try{
  UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
  SwingUtilities.updateComponentTreeUI(this);
  }
  catch (Exception erro){
  JOptionPane.showMessageDialog(null, erro);
  }
  }

/** This method is called from within the constructor to

• initialize the form.
• WARNING: Do NOT modify this code. The content of this method is
• always regenerated by the Form Editor.
  */
  @SuppressWarnings(“unchecked”)
  // <editor-fold defaultstate=“collapsed” desc=“Generated Code”>
  private void initComponents() {

timer1 = new org.netbeans.examples.lib.timerbean.Timer();
jLabel2 = new javax.swing.JLabel();
L_Data = new javax.swing.JLabel();
jSeparator3 = new javax.swing.JSeparator();
jPanel1 = new javax.swing.JPanel();
jLabel6 = new javax.swing.JLabel();
L_Hora = new javax.swing.JLabel();
jMenuBar1 = new javax.swing.JMenuBar();
Menu_Arquivos = new javax.swing.JMenu();
Sub_Menu_Cadastro = new javax.swing.JMenu();
Menu_cad_estudante = new javax.swing.JMenuItem();
Menu_cad_notas = new javax.swing.JMenuItem();
Menu_cad_faltas = new javax.swing.JMenuItem();
jSeparator1 = new javax.swing.JPopupMenu.Separator();
Menu_sair = new javax.swing.JMenuItem();
Sub_Menu_Busca = new javax.swing.JMenu();
Menu_cad_estudante1 = new javax.swing.JMenuItem();
Menu_cad_turma1 = new javax.swing.JMenuItem();
Menu_cad_serie1 = new javax.swing.JMenuItem();
Menu_cad_disciplina1 = new javax.swing.JMenuItem();
Menu_cad_notas1 = new javax.swing.JMenuItem();
Menu_cad_faltas1 = new javax.swing.JMenuItem();
Menu_Cad_Usuario1 = new javax.swing.JMenuItem();
Sub_Menu_Atualizacao = new javax.swing.JMenu();
jMenu2 = new javax.swing.JMenu();
Menu_Desempenho = new javax.swing.JMenu();
jMenuItem3 = new javax.swing.JMenuItem();
jMenuItem4 = new javax.swing.JMenuItem();
jMenuItem5 = new javax.swing.JMenuItem();
Menu_Ferramentas = new javax.swing.JMenu();
Menu_Calculadora = new javax.swing.JMenuItem();
jMenuItem6 = new javax.swing.JMenuItem();
jMenuItem8 = new javax.swing.JMenuItem();
jMenuItem9 = new javax.swing.JMenuItem();
jMenuItem14 = new javax.swing.JMenuItem();
jMenuItem15 = new javax.swing.JMenuItem();
jMenuItem16 = new javax.swing.JMenuItem();
jMenuItem17 = new javax.swing.JMenuItem();
jSeparator4 = new javax.swing.JPopupMenu.Separator();
jMenu1 = new javax.swing.JMenu();
jMenuItem10 = new javax.swing.JMenuItem();
jMenuItem11 = new javax.swing.JMenuItem();
Menu_Ajuda = new javax.swing.JMenu();
Menu_Sair = new javax.swing.JMenu();

timer1.addTimerListener(new org.netbeans.examples.lib.timerbean.TimerListener() {
public void onTime(java.awt.event.ActionEvent evt) {
timer1OnTime(evt);
}
});

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle(“Sistema Diretor de Turma(S.D.T)”);
setBackground(new java.awt.Color(51, 204, 0));
setResizable(false);

jLabel2.setText(“Desenvolvimento de KRSoftware C”);

L_Data.setText(“Data.:”);

jPanel1.setBackground(new java.awt.Color(0, 204, 0));
jPanel1.setMinimumSize(new java.awt.Dimension(100, 200));

jLabel6.setText(“S.D.T”);

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(359, 359, 359)
.addComponent(jLabel6)
.addContainerGap(380, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(53, 53, 53)
.addComponent(jLabel6)
.addContainerGap(31, Short.MAX_VALUE))
);

L_Hora.setText(“Hora.:”);

Menu_Arquivos.setText(“Arquivo”);

Sub_Menu_Cadastro.setText(“Cadastros”);

Menu_cad_estudante.setText(“Estudante”);
Sub_Menu_Cadastro.add(Menu_cad_estudante);

Menu_cad_notas.setText(“Notas”);
Sub_Menu_Cadastro.add(Menu_cad_notas);

Menu_cad_faltas.setText(“Faltas”);
Sub_Menu_Cadastro.add(Menu_cad_faltas);
Sub_Menu_Cadastro.add(jSeparator1);

Menu_sair.setText(“Sair”);
Sub_Menu_Cadastro.add(Menu_sair);

Menu_Arquivos.add(Sub_Menu_Cadastro);

Sub_Menu_Busca.setText(“Busca”);

Menu_cad_estudante1.setText(“Estudante”);
Sub_Menu_Busca.add(Menu_cad_estudante1);

Menu_cad_turma1.setText(“Turma”);
Sub_Menu_Busca.add(Menu_cad_turma1);

Menu_cad_serie1.setText(“Série”);
Sub_Menu_Busca.add(Menu_cad_serie1);

Menu_cad_disciplina1.setText(“Disciplina”);
Sub_Menu_Busca.add(Menu_cad_disciplina1);

Menu_cad_notas1.setText(“Notas”);
Sub_Menu_Busca.add(Menu_cad_notas1);

Menu_cad_faltas1.setText(“Faltas”);
Sub_Menu_Busca.add(Menu_cad_faltas1);

Menu_Cad_Usuario1.setText(“Usuario”);
Sub_Menu_Busca.add(Menu_Cad_Usuario1);

Menu_Arquivos.add(Sub_Menu_Busca);

Sub_Menu_Atualizacao.setText(“Atualização”);
Menu_Arquivos.add(Sub_Menu_Atualizacao);

jMenu2.setText(“Documentos”);
Menu_Arquivos.add(jMenu2);

jMenuBar1.add(Menu_Arquivos);

Menu_Desempenho.setMnemonic(‘D’);
Menu_Desempenho.setText(“Desempenho”);

jMenuItem3.setText(“Estudante”);
Menu_Desempenho.add(jMenuItem3);

jMenuItem4.setText(“Turma”);
Menu_Desempenho.add(jMenuItem4);

jMenuItem5.setText(“Spaece”);
Menu_Desempenho.add(jMenuItem5);

jMenuBar1.add(Menu_Desempenho);

Menu_Ferramentas.setMnemonic(‘F’);
Menu_Ferramentas.setText(“Ferramentas”);
Menu_Ferramentas.addItemListener(new java.awt.event.ItemListener() {
public void itemStateChanged(java.awt.event.ItemEvent evt) {
Menu_FerramentasItemStateChanged(evt);
}
});

Menu_Calculadora.setText(“Calculadora”);
Menu_Calculadora.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
Menu_CalculadoraMouseClicked(evt);
}
});
Menu_Calculadora.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
Menu_CalculadoraActionPerformed(evt);
}
});
Menu_Calculadora.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(java.awt.event.KeyEvent evt) {
Menu_CalculadoraKeyPressed(evt);
}
});
Menu_Calculadora.addMenuKeyListener(new javax.swing.event.MenuKeyListener() {
public void menuKeyPressed(javax.swing.event.MenuKeyEvent evt) {
Menu_CalculadoraMenuKeyPressed(evt);
}
public void menuKeyReleased(javax.swing.event.MenuKeyEvent evt) {
}
public void menuKeyTyped(javax.swing.event.MenuKeyEvent evt) {
}
});
Menu_Calculadora.addMenuDragMouseListener(new javax.swing.event.MenuDragMouseListener() {
public void menuDragMouseDragged(javax.swing.event.MenuDragMouseEvent evt) {
}
public void menuDragMouseEntered(javax.swing.event.MenuDragMouseEvent evt) {
Menu_CalculadoraMenuDragMouseEntered(evt);
}
public void menuDragMouseExited(javax.swing.event.MenuDragMouseEvent evt) {
}
public void menuDragMouseReleased(javax.swing.event.MenuDragMouseEvent evt) {
}
});
Menu_Ferramentas.add(Menu_Calculadora);

jMenuItem6.setText(“Importar Dados”);
Menu_Ferramentas.add(jMenuItem6);

jMenuItem8.setText(“Exportar Dados”);
Menu_Ferramentas.add(jMenuItem8);

jMenuItem9.setText(“Abrir Arquivo…”);
Menu_Ferramentas.add(jMenuItem9);

jMenuItem14.setText(“Mapeamento da turma”);
Menu_Ferramentas.add(jMenuItem14);

jMenuItem15.setText(“Aulas de Campo”);
Menu_Ferramentas.add(jMenuItem15);

jMenuItem16.setText(“S.D.T Web”);
Menu_Ferramentas.add(jMenuItem16);

jMenuItem17.setText(“Calendário”);
Menu_Ferramentas.add(jMenuItem17);
Menu_Ferramentas.add(jSeparator4);

jMenu1.setText(“Imprimir”);

jMenuItem10.setText(“Relatório”);
jMenu1.add(jMenuItem10);

jMenuItem11.setText(“Gráfico”);
jMenu1.add(jMenuItem11);

Menu_Ferramentas.add(jMenu1);

jMenuBar1.add(Menu_Ferramentas);

Menu_Ajuda.setMnemonic(‘A’);
Menu_Ajuda.setText(“Ajuda”);
jMenuBar1.add(Menu_Ajuda);

Menu_Sair.setMnemonic(‘S’);
Menu_Sair.setText(“Sair”);
Menu_Sair.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
Menu_SairMouseClicked(evt);
}
});
Menu_Sair.addMenuListener(new javax.swing.event.MenuListener() {
public void menuCanceled(javax.swing.event.MenuEvent evt) {
Menu_SairMenuCanceled(evt);
}
public void menuDeselected(javax.swing.event.MenuEvent evt) {
}
public void menuSelected(javax.swing.event.MenuEvent evt) {
}
});
Menu_Sair.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
Menu_SairActionPerformed(evt);
}
});
jMenuBar1.add(Menu_Sair);

setJMenuBar(jMenuBar1);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jSeparator3, javax.swing.GroupLayout.DEFAULT_SIZE, 766, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(L_Hora)
.addContainerGap(725, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(L_Data)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 520, Short.MAX_VALUE)
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 205, javax.swing.GroupLayout.PREFERRED_SIZE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 98, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 288, Short.MAX_VALUE)
.addComponent(jSeparator3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(L_Hora)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(L_Data)
.addComponent(jLabel2)))
);

java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
setBounds((screenSize.width-782)/2, (screenSize.height-487)/2, 782, 487);
}// </editor-fold>

private void Menu_SairMouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here: System.exit(0); }
System.exit(0);
}
private void Menu_SairMenuCanceled(javax.swing.event.MenuEvent evt) {

// TODO add your handling code here: System.exit(0); }
}
private void Menu_SairActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here: }
}
private void timer1OnTime(java.awt.event.ActionEvent evt) {
mostra_data.le_hora();
L_Hora.setText(“Hora atual”+mostra_data.getHora());
}

private void Menu_CalculadoraKeyPressed(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
//Nome da classe do Novo Formulario

}

private void Menu_CalculadoraMouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:

}

private void Menu_CalculadoraMenuDragMouseEntered(javax.swing.event.MenuDragMouseEvent evt) {
// TODO add your handling code here:

}

private void Menu_CalculadoraMenuKeyPressed(javax.swing.event.MenuKeyEvent evt) {
// TODO add your handling code here:
}

private void Menu_FerramentasItemStateChanged(java.awt.event.ItemEvent evt) {
// TODO add your handling code here:

}
//aqui em baixo é onde estou instanciando
private void Menu_CalculadoraActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
Calculadora calculadora = new Calculadora();
calculadora.setVisible(true);

}

Vlw! Obrigado, e estou esperando vossa ajuda!

[ViniGodoy]

Edite seu post e siga essas dicas:
http://www.guj.com.br/java/50115-voce-e-novo-no-guj-vai-criar-um-topico-e-colar-seu-codigo-fonte-leia-aqui-antes-por-favor

[rayner]

[quote=ViniGodoy]Edite seu post e siga essas dicas:
http://www.guj.com.br/java/50115-voce-e-novo-no-guj-vai-criar-um-topico-e-colar-seu-codigo-fonte-leia-aqui-antes-por-favor[/quote]

Obrigado aí ViniGodoy, eu já consegui resolver o meu problema, obrigado aí. em baixo está o código q eu utilizei. Ah, cara vejo muitos tópicos respondidos por você, e cara você é de mais.Vlw!

        Calculadora.main(new String[0]);  // ou null   

[ViniGodoy]

Não é normal chamar o main desse jeito. Funcionar funciona, mas não é a forma correta.

Se quiser saber a forma correta, veja o que seu método main faz. Provavelmente é o que você teria que fazer também.

[rayner]

[quote=ViniGodoy]Não é normal chamar o main desse jeito. Funcionar funciona, mas não é a forma correta.

Se quiser saber a forma correta, veja o que seu método main faz. Provavelmente é o que você teria que fazer também.[/quote]

bem, então está aqui o método main

public class Calculadora   
{   
   public static void main(String[] args)   
   {   
      JFrame frame = new CalculatorFrame();   
      frame.setVisible(true);  
      frame.setLocationRelativeTo( null );//colocar a calculadora no centro da tela
   }

}

E aí, o que me aconselhas a fazer?

[ViniGodoy]

No lugar de:

Faça diretamente:

JFrame frame = new CalculatorFrame(); frame.setLocationRelativeTo(null); frame.setVisible(true);

[rayner]

[quote=ViniGodoy]No lugar de:

Faça diretamente:

JFrame frame = new CalculatorFrame(); frame.setLocationRelativeTo(null); frame.setVisible(true); [/quote]

deu este erro aqui:

ferramentas.CalculatorFrame is not public in ferramentas; cannot be accessed from outside package

Vou postar todo o código novamente, ok?

//meu método main
public class Calculadora 
{ 
public static void main(String[] args) 
{ 
JFrame frame = new CalculatorFrame(); 
frame.show(); 
} 

} 
//finaliza o método main

agora vai a classe CalculatorFrame

class CalculatorFrame extends JFrame 
{ 

JTextArea t; 

public CalculatorFrame() 
{ 
setTitle("Calculadora - Sistema DR"; 
setSize(435,240); 
setResizable(false);//para nao aumentar ou diminuir a tela 
addWindowListener(new WindowAdapter() 
{ 
public void windowClosing(WindowEvent e) 
{ 
System.exit(0); 
} 
}); 

Container contentPane = getContentPane(); 
contentPane.add(new CalculatorPanel()); 

// -------------- Menu ----------------------- 

MenuBar bar = new MenuBar(); 

Menu calc = new Menu("Calculadora"; 
MenuItem exit = new MenuItem(" Sair "; 
calc.add(exit); 
exit.addActionListener(new ActionListener() 
{ 
public void actionPerformed(ActionEvent e) 
{ 
System.exit(0); 
} 
}); 
bar.add(calc); 


Menu about = new Menu("Sobre"; 
bar.add(about); 

MenuItem about1 = new MenuItem(" Calculadora"; 
about.add(about1); 
about1.addActionListener(new ActionListener() 
{ 
public void actionPerformed(ActionEvent e) 
{ 
JOptionPane.showMessageDialog(null, " " 
+ "\n " 
+"\n "; 
} 
}); 
bar.add(about); 

setMenuBar(bar); 
//-------------------------------------------- 
} 

agora a classe calculatorPainel

import java.awt.*; 
import java.awt.event.*; 
import java.math.*; 
import javax.swing.*; 

class CalculatorPanel extends JPanel implements ActionListener 
{ 
public CalculatorPanel() 
{ 
setLayout(null); 
setBackground(Color.green); 


//------------ Display ----------------------- 
display = new JTextField("0"; 
display.setEditable(false); 
add(display); 
display.setBounds(10,15,300,25); 

//------------ Botões ------------------------ 
b1 = new Button("0"; 
b1.setBackground(Color.white); 
b1.setForeground(Color.blue); 
add(b1); 
b1.setBounds(10,155,30,30); 
b1.addActionListener(this); 

b2 = new Button("1"; 
b2.setBackground(Color.white); 
b2.setForeground(Color.blue); 
add(b2); 
b2.addActionListener(this); 
b2.setBounds(10,120,30,30); 

b3 = new Button("4"; 
b3.setBackground(Color.white); 
b3.setForeground(Color.blue); 
add(b3); 
b3.addActionListener(this); 
b3.setBounds(10,85,30,30); 

b4 = new Button("7"; 
b4.setBackground(Color.white); 
b4.setForeground(Color.blue); 
add(b4); 
b4.addActionListener(this); 
b4.setBounds(10,50,30,30); 

b5 = new Button("+/-"; 
b5.setBackground(Color.white); 
b5.setForeground(Color.blue); 
add(b5); 
b5.addActionListener(this); 
b5.setBounds(45,155,30,30); 

b6 = new Button("2"; 
b6.setBackground(Color.white); 
b6.setForeground(Color.blue); 
add(b6); 
b6.addActionListener(this); 
b6.setBounds(45,120,30,30); 

b7 = new Button("5"; 
b7.setBackground(Color.white); 
b7.setForeground(Color.blue); 
add(b7); 
b7.addActionListener(this); 
b7.setBounds(45,85,30,30); 

b8 = new Button("8"; 
b8.setBackground(Color.white); 
b8.setForeground(Color.blue); 
add(b; 
b8.addActionListener(this); 
b8.setBounds(45,50,30,30); 

b9 = new Button("."; 
b9.setBackground(Color.white); 
b9.setForeground(Color.blue); 
add(b9); 
b9.addActionListener(this); 
b9.setBounds(80,155,30,30); 

b10 = new Button("3"; 
b10.setBackground(Color.white); 
b10.setForeground(Color.blue); 
add(b10); 
b10.addActionListener(this); 
b10.setBounds(80,120,30,30); 

b11 = new Button("6"; 
b11.setBackground(Color.white); 
b11.setForeground(Color.blue); 
add(b11); 
b11.addActionListener(this); 
b11.setBounds(80,85,30,30); 

b12 = new Button("9"; 
b12.setBackground(Color.white); 
b12.setForeground(Color.blue); 
add(b12); 
b12.addActionListener(this); 
b12.setBounds(80,50,30,30); 
b13= new Button("+"; 
b13.setBackground(Color.white); 
b13.setForeground(Color.gray); 
add(b13); 
b13.addActionListener(this); 
b13.setBounds(115,155,30,30); 

b14 = new Button("-"; 
b14.setBackground(Color.white); 
b14.setForeground(Color.gray); 
add(b14); 
b14.addActionListener(this); 
b14.setBounds(115,120,30,30); 

b15 = new Button("\u00d7"; 
b15.setBackground(Color.white); 
b15.setForeground(Color.gray); 
add(b15); 
b15.addActionListener(this); 
b15.setBounds(115,85,30,30); 

b16 = new Button("\u00f7"; 
b16.setBackground(Color.white); 
b16.setForeground(Color.gray); 
add(b16); 
b16.addActionListener(this); 
b16.setBounds(115,50,30,30); 

b17= new Button("="; 
b17.setBackground(Color.green); 
b17.setForeground(Color.black); 
add(b17); 
b17.addActionListener(this); 
b17.setBounds(150,120,30,65); 


b18 = new Button("%"; 
b18.setBackground(Color.white); 
b18.setForeground(Color.red); 
add(b1; 
b18.addActionListener(this); 
b18.setBounds(150,85,30,30); 

b19 = new Button("sqrt"; 
b19.setBackground(Color.white); 
b19.setForeground(Color.red); 
add(b19); 
b19.addActionListener(this); 
b19.setBounds(150,50,30,30); 

b20= new Button("E"; 
b20.setBackground(Color.gray); 
b20.setForeground(Color.orange); 
add(b20); 
b20.addActionListener(this); 
b20.setBounds(195,155,30,30); 

b21 = new Button("PI"; 
b21.setBackground(Color.gray); 
b21.setForeground(Color.orange); 
add(b21); 
b21.addActionListener(this); 
b21.setBounds(195,120,30,30); 

b22 = new Button("n!"; 
b22.setBackground(Color.gray); 
b22.setForeground(Color.orange); 
add(b22); 
b22.addActionListener(this); 
b22.setBounds(195,85,30,30); 

b23 = new Button("In"; 
b23.setBackground(Color.gray); 
b23.setForeground(Color.orange); 
add(b23); 
b23.addActionListener(this); 
b23.setBounds(195,50,30,30); 

b24= new Button("sin"; 
b24.setBackground(Color.gray); 
b24.setForeground(Color.orange); 
add(b24); 
b24.addActionListener(this); 
b24.setBounds(230,155,30,30); 

b25 = new Button("cos"; 
b25.setBackground(Color.gray); 
b25.setForeground(Color.orange); 
add(b25); 
b25.addActionListener(this); 
b25.setBounds(230,120,30,30); 

b26 = new Button("tan"; 
b26.setBackground(Color.gray); 
b26.setForeground(Color.orange); 
add(b26); 
b26.addActionListener(this); 
b26.setBounds(230,85,30,30); 

b27 = new Button("log"; 
b27.setBackground(Color.gray); 
b27.setForeground(Color.orange); 
add(b27); 
b27.addActionListener(this); 
b27.setBounds(230,50,30,30); 

b28= new Button("asin"; 
b28.setBackground(Color.gray); 
b28.setForeground(Color.orange); 
add(b2; 
b28.addActionListener(this); 
b28.setBounds(265,155,30,30); 

b29 = new Button("acos"; 
b29.setBackground(Color.gray); 
b29.setForeground(Color.orange); 
add(b29); 
b29.addActionListener(this); 
b29.setBounds(265,120,30,30); 

b30 = new Button("atan"; 
b30.setBackground(Color.gray); 
b30.setForeground(Color.orange); 
add(b30); 
b30.addActionListener(this); 
b30.setBounds(265,85,30,30); 

b31 = new Button("mod"; 
b31.setBackground(Color.gray); 
b31.setForeground(Color.orange); 
add(b31); 
b31.addActionListener(this); 
b31.setBounds(265,50,30,30); 

b32= new Button("x^2"; 
b32.setBackground(Color.gray); 
b32.setForeground(Color.orange); 
add(b32); 
b32.addActionListener(this); 
b32.setBounds(300,155,30,30); 

b33 = new Button("x^3"; 
b33.setBackground(Color.gray); 
b33.setForeground(Color.orange); 
add(b33); 
b33.addActionListener(this); 
b33.setBounds(300,120,30,30); 

b34 = new Button("x^y"; 
b34.setBackground(Color.gray); 
b34.setForeground(Color.orange); 
add(b34); 
b34.addActionListener(this); 
b34.setBounds(300,85,30,30); 

b35 = new Button("e^x"; 
b35.setBackground(Color.gray); 
b35.setForeground(Color.orange); 
add(b35); 
b35.addActionListener(this); 
b35.setBounds(300,50,30,30); 

b36= new Button("M"; 
b36.setBackground(Color.blue); 
b36.setForeground(Color.yellow); 
add(b36); 
b36.addActionListener(this); 
b36.setBounds(345,155,30,30); 

b37 = new Button("RM"; 
b37.setBackground(Color.blue); 
b37.setForeground(Color.yellow); 
add(b37); 
b37.addActionListener(this); 
b37.setBounds(345,120,30,30); 

b38 = new Button("M2"; 
b38.setBackground(Color.blue); 
b38.setForeground(Color.yellow); 
add(b3; 
b38.addActionListener(this); 
b38.setBounds(345,85,30,30); 

b39 = new Button("M3"; 
b39.setBackground(Color.blue); 
b39.setForeground(Color.yellow); 
add(b39); 
b39.addActionListener(this); 
b39.setBounds(345,50,30,30); 

b40= new Button("C"; 
b40.setBackground(Color.red); 
b40.setForeground(Color.white); 
add(b40); 
b40.addActionListener(this); 
b40.setBounds(385,120,30,65); 

b41 = new Button("CE"; 
b41.setBackground(Color.red); 
b41.setForeground(Color.white); 
add(b41); 
b41.addActionListener(this); 
b41.setBounds(385,50,30,65); 

} 

public void actionPerformed(ActionEvent evt) 
{ 
String s = evt.getActionCommand(); 

if (s.equals("C") 
{ 
operando1 = 0; 
op = "="; 
display.setText("0"; 
start = true; 
} 
else if('0' <= s.charAt(0) && s.charAt(0) <= '9'|| s.equals(".") 
{ 
if (start) 
{ 
display.setText(s); 
start = false; 
} 
else 
{ 
display.setText(display.getText() + s); 
} 
} 
else 
{ 

if (s.equals("PI") 
{ 
double aux = 1; 
aux = Math.PI; 
display.setText("" + aux); 

} 
if(s.equals("E") 
{ 
double aux = 1; 
aux = Math.E; 
display.setText("" + aux); 
} 
if(s.equals("%") 
{ 
double x = Double.parseDouble(display.getText()); 
double total = (operando1*x)/100; 
display.setText("" + total); 
} 
if(s.equals("+/-") 
{ 
double total = 0; 
double x = Double.parseDouble(display.getText()); 
if (x != 0) 
total = (x * -1); 
display.setText("" + total); 
} 

String memoria = "M RM M2 M3"; 

if(memoria.indexOf(s)!= -1) 
{ 
JOptionPane.showMessageDialog( 
null, "Este recursos será implementado na Calculadora verão 2. Aguarde !!!"; 
} 


String comp = "sqrt In n! PI log tan cos sin x^2" 
+ "x^3 asin acos atan e^x" ; 

if (comp.indexOf(s) != -1) 
{ 
calculate1(Double.parseDouble 
(display.getText()),s); 
start = true; 
} 

String comum = "= + - * / \u00d7 \u00f7 x^y mod"; 

if (s.equals("CE") 
{ 
display.setText("" + operando1); 
op = s; 
start = true; 
}else if (comum.indexOf(s) != -1) 
{ 
double x = Double.parseDouble(display.getText()); 
calculate(x); 
op = s; 
start = true; 
} 

} 
} 

public void calculate1(double opr,String op) 
{ 
if (op.equals("sqrt") opr = Math.sqrt(opr); 
else if(op.equals("In") opr = Math.log(opr); 
else if(op.equals("n!") opr = fatorial(opr); 
else if(op.equals("log") opr = Math.log(opr); 
else if(op.equals("tan") opr = Math.tan((opr*Math.PI) / 180); 
else if(op.equals("cos") opr = Math.cos((opr*Math.PI) / 180); 
else if(op.equals("sin") opr = Math.sin((opr*Math.PI) / 180) ; 
else if(op.equals("asin") opr = Math.asin(opr); 
else if(op.equals("acos") opr = Math.acos(opr); 
else if(op.equals("atan") opr = Math.atan(opr); 
else if(op.equals("x^2") opr = Math.pow(opr,2); 
else if(op.equals("x^3") opr = Math.pow(opr,3); 
else if(op.equals("e^x") opr = Math.exp(opr); 

display.setText("" + opr); 
} 

public double fatorial(double nro) 
{ 
if(nro <=1) 
return 1; 
else 
return nro*fatorial(nro-1); 
} 

public double umSobre(double nro) 
{ 
if (nro != 0) 
return ((1)/(nro)); 
else 
return 0; 
} 

public void calculate(double n) 
{ 

if (op.equals("+") operando1 += n; 
else if (op.equals("-") operando1 -= n; 
else if (op.equals("\u00d7") operando1 *= n; 
else if (op.equals("\u00f7") operando1 /= n; 
else if (op.equals("=") operando1 = n; 
else if (op.equals("x^y") operando1 = Math.pow(operando1,n); 
else if (op.equals("mod") operando1 %= n; 

display.setText("" + operando1); 
} 

private JTextField display; 
private double operando1 = 0; 
private BigDecimal memory[]; 
private boolean start = true; 
private String op = "="; 
private Button b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11,b12,b13,b14, 
b15,b16,b17,b18,b19,b20,b21,b22,b23,b24,b25,b26, 
b27,b28,b29,b30,b31,b32,b33,b34,b35,b36,b37,b38, 
b39,b40,b41; 
} 

Pronto aí está todo o código, então, como eu devo fazer no meu ActionPerformed?
Vlw! Obrigado.

[elissonandrade]

Amigo, o caso é que você declarou class nas duas últimas classes, tornando-as assim invisíveis pra quem tá fora do pacote. Use “public class” nas duas últimas classes que funciona.

[rayner]

Amigo, o caso é que você declarou class nas duas últimas classes, tornando-as assim invisíveis pra que tá fora do pacote. Use “public class” nas duas últimas classes que funciona.

Ei, elissonandrade, deu certo, obrigado aí pela ajuda. Só que está dando um erro de lógica, assim, quando eu inicializo a tela principal, e chamo a calculadora, tudo beleza, mas quando eu fecho a calculadora, a tela principal, fecha junto. O que devo fazer?
Vlw! Obrigado!

[ViniGodoy]

Defina o DefaultCloseOperation para DISPOSE_ON_CLOSE ao invés de EXIT_ON_CLOSE.

[rayner]

Defina o DefaultCloseOperation para DISPOSE_ON_CLOSE ao invés de EXIT_ON_CLOSE.

Utilizei o

setVisible(false);

Deu certo, fechou apenas a calculadora. Pode ser assim, ou você me aconselha outra maneira?
Vlw! Obrigado!

[ViniGodoy]

É bom fazer o que falei também para o X não fechar a calculadora. Mas pode ser assim também.
Outra opção é usar o comando dispose() no lugar do setVisible(false).

[rayner]

Aí galera muito obrigado! Valeu mesmo aí pela ajuda. Deu certo aqui.