Estou estudando uma calculadora que usa swing apartir de um tutorial no youTube, mas quando compilo ela nao executa ou seja não aparece nada apenas que compilou corretamente.
Obs: Uso NetBeans IDE 7.0.1
package calculadora;
public class JFCalc extends javax.swing.JFrame {
char operacao;
String temp,Ap;
double n1,n2,result;
public JFCalc() {
initComponents();
}
private void NumDigit(String Numero) {
temp = JfVisor.getText();
Ap = temp;
temp = temp + Numero;
JfVisor.setText(temp);
}
private void OpD(char Op) throws NumberFormatException {
operacao = Op;
n1 = Double.parseDouble(JfVisor.getText());
JfVisor.setText("");
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jBspac = new javax.swing.JButton();
jB8 = new javax.swing.JButton();
jB6 = new javax.swing.JButton();
jB4 = new javax.swing.JButton();
jB5 = new javax.swing.JButton();
jBce = new javax.swing.JButton();
jB9 = new javax.swing.JButton();
jB1 = new javax.swing.JButton();
jB3 = new javax.swing.JButton();
jBc = new javax.swing.JButton();
jB2 = new javax.swing.JButton();
jB7 = new javax.swing.JButton();
jB0 = new javax.swing.JButton();
jBadicao = new javax.swing.JButton();
jBdiv = new javax.swing.JButton();
jBmult = new javax.swing.JButton();
jBigual = new javax.swing.JButton();
jBponto = new javax.swing.JButton();
jBsubt = new javax.swing.JButton();
JfVisor = new javax.swing.JTextField();
jBmn = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jBspac.setText("Voltar");
jBspac.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBspacActionPerformed(evt);
}
});
jB8.setText("8");
jB8.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jB8ActionPerformed(evt);
}
});
jB6.setText("6");
jB6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jB6ActionPerformed(evt);
}
});
jB4.setText("4");
jB4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jB4ActionPerformed(evt);
}
});
jB5.setText("5");
jB5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jB5ActionPerformed(evt);
}
});
jBce.setText("CE");
jBce.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBceActionPerformed(evt);
}
});
jB9.setText("9");
jB9.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jB9ActionPerformed(evt);
}
});
jB1.setText("1");
jB1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jB1ActionPerformed(evt);
}
});
jB3.setText("3");
jB3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jB3ActionPerformed(evt);
}
});
jBc.setText("C");
jBc.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBcActionPerformed(evt);
}
});
jB2.setText("2");
jB2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jB2ActionPerformed(evt);
}
});
jB7.setText("7");
jB7.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jB7ActionPerformed(evt);
}
});
jB0.setText("0");
jB0.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jB0ActionPerformed(evt);
}
});
jBadicao.setText("+");
jBadicao.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBadicaoActionPerformed(evt);
}
});
jBdiv.setText("/");
jBdiv.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBdivActionPerformed(evt);
}
});
jBmult.setText("*");
jBmult.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBmultActionPerformed(evt);
}
});
jBigual.setText("=");
jBigual.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBigualActionPerformed(evt);
}
});
jBponto.setText(".");
jBsubt.setText("-");
jBsubt.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBsubtActionPerformed(evt);
}
});
jBmn.setText("-+");
jBmn.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBmnActionPerformed(evt);
}
});
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(JfVisor, javax.swing.GroupLayout.PREFERRED_SIZE, 357, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jBspac, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jBce, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jBc, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jBmn, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(105, 105, 105))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jB7, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jB8, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jB9, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jBdiv, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE)
.addGap(105, 105, 105))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jB4, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jB5, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jB1, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jB2, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jB0, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jBponto, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jB3, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBadicao, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jBigual, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBsubt, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE))
.addGap(4, 4, 4))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addComponent(jB6, javax.swing.GroupLayout.DEFAULT_SIZE, 87, Short.MAX_VALUE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jBmult, javax.swing.GroupLayout.PREFERRED_SIZE, 87, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(4, 4, 4)))
.addGap(101, 101, 101)))
.addGap(0, 0, 0))))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(JfVisor, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jBspac, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBce, javax.swing.GroupLayout.PREFERRED_SIZE, 43, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBc, javax.swing.GroupLayout.PREFERRED_SIZE, 43, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBmn, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jB7, javax.swing.GroupLayout.PREFERRED_SIZE, 42, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jB8, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jB9, javax.swing.GroupLayout.PREFERRED_SIZE, 43, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBdiv, javax.swing.GroupLayout.PREFERRED_SIZE, 43, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jB5, javax.swing.GroupLayout.DEFAULT_SIZE, 49, Short.MAX_VALUE)
.addComponent(jB6, javax.swing.GroupLayout.DEFAULT_SIZE, 49, Short.MAX_VALUE)
.addComponent(jB4, javax.swing.GroupLayout.DEFAULT_SIZE, 51, Short.MAX_VALUE)
.addComponent(jBmult, javax.swing.GroupLayout.PREFERRED_SIZE, 51, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jB1, javax.swing.GroupLayout.PREFERRED_SIZE, 42, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jB2, javax.swing.GroupLayout.PREFERRED_SIZE, 41, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jB3, javax.swing.GroupLayout.PREFERRED_SIZE, 43, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBsubt, javax.swing.GroupLayout.PREFERRED_SIZE, 45, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(3, 3, 3)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jB0, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBponto, javax.swing.GroupLayout.DEFAULT_SIZE, 48, Short.MAX_VALUE)
.addComponent(jBadicao, javax.swing.GroupLayout.PREFERRED_SIZE, 48, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBigual, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
jPanel1Layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] {jB0, jB1, jB2, jB3, jB4, jB5, jB6, jB7, jB8, jB9, jBadicao, jBc, jBce, jBdiv, jBigual, jBmn, jBmult, jBponto, jBspac, jBsubt});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 387, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(30, 30, 30)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jB5ActionPerformed(java.awt.event.ActionEvent evt) {
NumDigit("5");
}
private void jBceActionPerformed(java.awt.event.ActionEvent evt) {
n2 = 0;
JfVisor.setText(String.valueOf(n1));
}
private void jB2ActionPerformed(java.awt.event.ActionEvent evt) {
NumDigit("2");
}
private void jBdivActionPerformed(java.awt.event.ActionEvent evt) {
OpD('/');
}
private void jBigualActionPerformed(java.awt.event.ActionEvent evt) {
n2 = Double.parseDouble(JfVisor.getText());
switch (operacao) {
case '+':
result = n1 + n2;
break;
case '-':
result = n1 + n2;
break;
case '*':
result = n1 + n2;
break;
case '/':
result = n1 + n2;
break;
}
JfVisor.setText(String.valueOf(result));
}
private void jBmnActionPerformed(java.awt.event.ActionEvent evt) {
if(temp.startsWith('-')){
temp = temp.replace('-','+');
}else if(temp.startsWith('+')){
temp = temp.replace('+','-');
}else{
temp = '-' + temp ;
}
}
private void jB0ActionPerformed(java.awt.event.ActionEvent evt) {
NumDigit("0");
}
private void jB4ActionPerformed(java.awt.event.ActionEvent evt) {
NumDigit("4");
}
private void jBspacActionPerformed(java.awt.event.ActionEvent evt) {
temp = Ap;
JfVisor.setText(temp);
}
private void jB7ActionPerformed(java.awt.event.ActionEvent evt) {
NumDigit("7");
}
private void jB8ActionPerformed(java.awt.event.ActionEvent evt) {
NumDigit("8");
}
private void jB9ActionPerformed(java.awt.event.ActionEvent evt) {
NumDigit("9");
}
private void jB6ActionPerformed(java.awt.event.ActionEvent evt) {
NumDigit("6");
}
private void jB1ActionPerformed(java.awt.event.ActionEvent evt) {
NumDigit("1");
}
private void jB3ActionPerformed(java.awt.event.ActionEvent evt) {
NumDigit("3");
}
private void jBadicaoActionPerformed(java.awt.event.ActionEvent evt) {
OpD('+');
}
private void jBsubtActionPerformed(java.awt.event.ActionEvent evt) {
OpD('-');
}
private void jBmultActionPerformed(java.awt.event.ActionEvent evt) {
OpD('*');
}
private void jBcActionPerformed(java.awt.event.ActionEvent evt) {
n1 = 0;
n2 = 0;
JfVisor.setText("");
}
public static void main(String args[]) {
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(JFCalc.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(JFCalc.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(JFCalc.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(JFCalc.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new JFCalc().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JTextField JfVisor;
private javax.swing.JButton jB0;
private javax.swing.JButton jB1;
private javax.swing.JButton jB2;
private javax.swing.JButton jB3;
private javax.swing.JButton jB4;
private javax.swing.JButton jB5;
private javax.swing.JButton jB6;
private javax.swing.JButton jB7;
private javax.swing.JButton jB8;
private javax.swing.JButton jB9;
private javax.swing.JButton jBadicao;
private javax.swing.JButton jBc;
private javax.swing.JButton jBce;
private javax.swing.JButton jBdiv;
private javax.swing.JButton jBigual;
private javax.swing.JButton jBmn;
private javax.swing.JButton jBmult;
private javax.swing.JButton jBponto;
private javax.swing.JButton jBspac;
private javax.swing.JButton jBsubt;
private javax.swing.JPanel jPanel1;
// End of variables declaration
}
