import javax.swing.*;
public class GUIdaLoja extends javax.swing.JFrame {
public GUIdaLoja() {
initComponents();
Carro[] c =new Carro[4];
Importado[] im = new Importado[2];
Nacional[] na= new Nacional[2];
for ( int i=0 ; i<4 ; i++)
{
c[i] = new Carro();
c[i].setMarca(m.getText());
c[i].setAno(Integer.parseInt(a.getText()));
c[i].setValor(Double.parseDouble(v.getText()));
}
}
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
m = new javax.swing.JTextField();
a = new javax.swing.JTextField();
Combo = new javax.swing.JComboBox();
BtCalc = new javax.swing.JButton();
v = new javax.swing.JTextField();
jComboBox1 = new javax.swing.JComboBox();
jScrollPane1 = new javax.swing.JScrollPane();
saida = new javax.swing.JTextArea();
jPanel1 = new javax.swing.JPanel();
Limpa = new javax.swing.JButton();
btMostra = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("Marca :");
jLabel2.setText("Ano :");
jLabel3.setText("Valor :");
Combo.setFont(new java.awt.Font("Arial", 1, 11));
Combo.setMaximumRowCount(2);
Combo.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Nacional", "Importado" }));
BtCalc.setText("Calcular");
BtCalc.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtCalcActionPerformed(evt);
}
});
jComboBox1.setMaximumRowCount(2);
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "R$", "U$" }));
saida.setColumns(20);
saida.setRows(5);
jScrollPane1.setViewportView(saida);
jPanel1.setBackground(new java.awt.Color(153, 204, 255));
jPanel1.setBorder(new javax.swing.border.SoftBevelBorder(javax.swing.border.BevelBorder.RAISED));
Limpa.setMnemonic('L');
Limpa.setText("LIMPAR");
Limpa.setToolTipText("Limpa o campo de texto todo !!!");
Limpa.setHorizontalTextPosition(javax.swing.SwingConstants.CENTER);
Limpa.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
LimpaActionPerformed(evt);
}
});
btMostra.setMnemonic('O');
btMostra.setText("OK");
btMostra.setToolTipText("Mostra as Vari\u00e1veis digitadas !!!");
btMostra.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btMostraActionPerformed(evt);
}
});
jButton3.setText("SAIR");
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.TRAILING, false)
.addComponent(jButton3, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(btMostra, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(Limpa, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 91, Short.MAX_VALUE))
.addContainerGap(46, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(48, 48, 48)
.addComponent(Limpa, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(15, 15, 15)
.addComponent(btMostra, javax.swing.GroupLayout.PREFERRED_SIZE, 33, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(15, 15, 15)
.addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 38, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(156, Short.MAX_VALUE))
);
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()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jScrollPane1, javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2)
.addComponent(jLabel3))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(Combo, 0, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(a)
.addComponent(m, javax.swing.GroupLayout.DEFAULT_SIZE, 137, Short.MAX_VALUE)))
.addGroup(layout.createSequentialGroup()
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(v)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtCalc)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 30, Short.MAX_VALUE)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(62, 62, 62)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(m, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(17, 17, 17)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(a, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(19, 19, 19)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(Combo, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtCalc))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(v, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 100, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(39, Short.MAX_VALUE))
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
pack();
}
private void btMostraActionPerformed(java.awt.event.ActionEvent evt) {
Carro[] c =new Carro[4];
Importado[] im = new Importado[2];
Nacional[] na = new Nacional[2];
saida.setText(c.toString());
saida.setText(na.toString());
saida.setText(im.toString());
}
private void LimpaActionPerformed(java.awt.event.ActionEvent evt) {
m.setText(" ");
a.setText(" ");
v.setText(" ");
}
private void BtCalcActionPerformed(java.awt.event.ActionEvent evt) {
Carro[] c =new Carro[4];
Nacional[] na = new Nacional[2];
Importado[] im = new Importado[2];
if( Combo.getSelectedItem() == "Nacional")
{
for (int w=0; w<2; w++)
{
na[w]= new Nacional();
na[w].setAumentaValor();
}
}
else{
for(int j =0; j <2; j++)
{
im[j] = new Importado();
im[j].setAumentaValor();
}
}
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new GUIdaLoja().setVisible(true);
}
});
}
private javax.swing.JButton BtCalc;
private javax.swing.JComboBox Combo;
private javax.swing.JButton Limpa;
private javax.swing.JTextField a;
private javax.swing.JButton btMostra;
private javax.swing.JButton jButton3;
private javax.swing.JComboBox jComboBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextField m;
private javax.swing.JTextArea saida;
private javax.swing.JTextField v;
}
Exception in thread "AWT-EventQueue-0" java.lang.NumberFormatException: For input string: ""
:? aew gente tá dando esse erro no meu código
Exception in thread "AWT-EventQueue-0" java.lang.NumberFormatException: For input string: ""
se puderem me ajudar eu agradeço muito !!!
:)
ObS.: Código gerado pelo NB !!! só fiz alterar algumas coisas !
2 Respostas
T
Integer.parseInt ("") ou Double.parseDouble ("") não retorna 0, e sim ocasiona uma NumberFormatException. Antes de sair puxando os dados sem ver se eles estão preenchidos ou não, verifique se eles estão preenchidos e só então chame Integer.parseInt ou Double.parseDouble.
então como ficaria ?
desculpa… é q eu sou iniciante mesmo ! ^^
Criado 23 de novembro de 2007
Ultima resposta 23 de nov. de 2007
Respostas 2
Participantes 2
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