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Habilitar Tecla Enter Além do Mouse



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    Publicado em: 17/12/2015 15:00:53

    Estou fazendo uma calculadora e tentando habilitar a tecla Enter para o sinal de Igual, além do mouse e não está funcionando. Alguém pode ajudar, segue o código.


    import java.awt.Color;
    import java.awt.EventQueue;
    import java.awt.Font;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import javax.swing.GroupLayout;
    import javax.swing.GroupLayout.Alignment;
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JLabel;
    import javax.swing.JPanel;
    import javax.swing.JTextField;
    import javax.swing.LayoutStyle.ComponentPlacement;
    import javax.swing.border.EmptyBorder;
    import java.awt.event.KeyAdapter;
    import java.awt.event.KeyEvent;

    public class Calculadora extends JFrame {

    private static final long serialVersionUID = 1L;
    private JPanel contentPane;
    private JTextField jTextFieldTotal;

    Double valor1, valor2;
    String sinal;

    public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {
    public void run() {
    try {
    Calculadora frame = new Calculadora();
    frame.setVisible(true);
    frame.setResizable(false);
    frame.setLocationRelativeTo(null);
    } catch (Exception e) {
    e.printStackTrace();
    }
    }
    });
    }

    public Calculadora() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setBounds(100, 100, 369, 439);
    contentPane = new JPanel();
    contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
    setContentPane(contentPane);

    JButton jButton0 = new JButton("0";
    jButton0.addKeyListener(new KeyAdapter() {
    @Override
    public void keyPressed(KeyEvent evt) {



    }
    });
    jButton0.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent evt) {


    jTextFieldTotal.setText(jTextFieldTotal.getText()+0);


    }
    });

    JButton jButton1 = new JButton("1";
    jButton1.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(jTextFieldTotal.getText()+1);

    }
    });

    JButton jButton2 = new JButton("2";
    jButton2.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(jTextFieldTotal.getText()+2);

    }
    });

    JButton jButton3 = new JButton("3";
    jButton3.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(jTextFieldTotal.getText()+3);

    }
    });

    JButton jButton4 = new JButton("4";
    jButton4.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(jTextFieldTotal.getText()+4);

    }
    });

    JButton jButton5 = new JButton("5";
    jButton5.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(jTextFieldTotal.getText()+5);

    }
    });

    JButton jButton6 = new JButton("6";
    jButton6.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(jTextFieldTotal.getText()+6);

    }
    });

    JButton jButtonPonto = new JButton(".";
    jButtonPonto.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(jTextFieldTotal.getText()+".";

    }
    });

    JButton jButtonIgual = new JButton("=";
    jButtonIgual.addKeyListener(new KeyAdapter() {
    @Override
    public void keyPressed(KeyEvent evt) {

    // if (evt.getKeyCode() == KeyEvent.VK_ENTER){

    int tecla=evt.getKeyCode();
    if (tecla==KeyEvent.VK_ENTER) {

    valor2 = Double.parseDouble(jTextFieldTotal.getText());
    jTextFieldTotal.setText(String.valueOf(sinal));

    if(sinal == "divide"{
    jTextFieldTotal.setText(String.valueOf(valor1 / valor2));
    }
    else if(sinal == "multiplica"{
    jTextFieldTotal.setText(String.valueOf(valor1 * valor2));
    }
    else if(sinal == "soma"{
    jTextFieldTotal.setText(String.valueOf(valor1 + valor2));
    }
    else if(sinal == "subtrai"{
    jTextFieldTotal.setText(String.valueOf(valor1 - valor2));
    }

    }


    }
    });
    jButtonIgual.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    valor2 = Double.parseDouble(jTextFieldTotal.getText());
    jTextFieldTotal.setText(String.valueOf(sinal));

    if(sinal == "divide"{
    jTextFieldTotal.setText(String.valueOf(valor1 / valor2));
    }
    else if(sinal == "multiplica"{
    jTextFieldTotal.setText(String.valueOf(valor1 * valor2));
    }
    else if(sinal == "soma"{
    jTextFieldTotal.setText(String.valueOf(valor1 + valor2));
    }
    else if(sinal == "subtrai"{
    jTextFieldTotal.setText(String.valueOf(valor1 - valor2));
    }


    }
    });

    JButton jButton7 = new JButton("7";
    jButton7.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(jTextFieldTotal.getText()+7);

    }
    });

    JButton jButton8 = new JButton("8";
    jButton8.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(jTextFieldTotal.getText()+;

    }
    });

    JButton jButton9 = new JButton("9";
    jButton9.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(jTextFieldTotal.getText()+9);

    }
    });

    final JButton jButtonDivide = new JButton("/";
    jButtonDivide.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    valor1 = Double.parseDouble(jTextFieldTotal.getText());
    sinal = "divide";
    jTextFieldTotal.setText("";


    }
    });

    JButton jButtonMultiplica = new JButton("*";
    jButtonMultiplica.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    valor1 = Double.parseDouble(jTextFieldTotal.getText());
    sinal = "multiplica";
    jTextFieldTotal.setText("";

    }
    });

    JButton jButtonSubtrai = new JButton("-";
    jButtonSubtrai.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    valor1 = Double.parseDouble(jTextFieldTotal.getText());
    sinal = "subtrai";
    jTextFieldTotal.setText("";

    }
    });

    JButton jButtonSoma = new JButton("+";
    jButtonSoma.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    valor1 = Double.parseDouble(jTextFieldTotal.getText());
    sinal = "soma";
    jTextFieldTotal.setText("";

    }
    });

    JPanel panel = new JPanel();
    panel.setBackground(new Color(204, 51, 0));

    jTextFieldTotal = new JTextField();
    jTextFieldTotal.setEditable(false);
    jTextFieldTotal.setFont(new Font("Tahoma", Font.PLAIN, 13));
    jTextFieldTotal.setColumns(10);

    JButton btnC = new JButton("Clear / Limpar";
    btnC.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent arg0) {

    jTextFieldTotal.setText(null);

    }
    });
    GroupLayout gl_contentPane = new GroupLayout(contentPane);
    gl_contentPane.setHorizontalGroup(
    gl_contentPane.createParallelGroup(Alignment.LEADING)
    .addComponent(panel, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    .addGroup(gl_contentPane.createSequentialGroup()
    .addGap(30)
    .addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING, false)
    .addComponent(jTextFieldTotal)
    .addComponent(btnC, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    .addGroup(gl_contentPane.createSequentialGroup()
    .addComponent(jButton7, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButton8, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButton9, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButtonDivide, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE))
    .addGroup(gl_contentPane.createSequentialGroup()
    .addComponent(jButton4, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButton5, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButton6, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButtonMultiplica, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE))
    .addGroup(gl_contentPane.createSequentialGroup()
    .addComponent(jButton1, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButton2, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButton3, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButtonSubtrai, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE))
    .addGroup(gl_contentPane.createSequentialGroup()
    .addComponent(jButton0, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButtonPonto, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButtonIgual, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jButtonSoma, GroupLayout.PREFERRED_SIZE, 63, GroupLayout.PREFERRED_SIZE)))
    .addContainerGap(31, Short.MAX_VALUE))
    );
    gl_contentPane.setVerticalGroup(
    gl_contentPane.createParallelGroup(Alignment.TRAILING)
    .addGroup(gl_contentPane.createSequentialGroup()
    .addComponent(panel, GroupLayout.PREFERRED_SIZE, 41, GroupLayout.PREFERRED_SIZE)
    .addPreferredGap(ComponentPlacement.UNRELATED)
    .addComponent(jTextFieldTotal, GroupLayout.DEFAULT_SIZE, 24, Short.MAX_VALUE)
    .addPreferredGap(ComponentPlacement.RELATED)
    .addComponent(btnC)
    .addGap(10)
    .addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
    .addComponent(jButton7, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButton8, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButton9, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButtonDivide, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE))
    .addPreferredGap(ComponentPlacement.RELATED)
    .addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
    .addComponent(jButton4, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButton5, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButton6, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButtonMultiplica, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE))
    .addPreferredGap(ComponentPlacement.RELATED)
    .addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
    .addComponent(jButton1, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButton2, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButton3, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButtonSubtrai, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE))
    .addPreferredGap(ComponentPlacement.RELATED)
    .addGroup(gl_contentPane.createParallelGroup(Alignment.LEADING)
    .addComponent(jButtonSoma, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButtonIgual, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButtonPonto, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE)
    .addComponent(jButton0, GroupLayout.PREFERRED_SIZE, 55, GroupLayout.PREFERRED_SIZE))
    .addGap(36))
    );

    JLabel lblNewLabel = new JLabel("Calculadora";
    lblNewLabel.setFont(new Font("Tahoma", Font.BOLD, 16));
    lblNewLabel.setForeground(Color.WHITE);
    GroupLayout gl_panel = new GroupLayout(panel);
    gl_panel.setHorizontalGroup(
    gl_panel.createParallelGroup(Alignment.LEADING)
    .addGroup(gl_panel.createSequentialGroup()
    .addGap(116)
    .addComponent(lblNewLabel)
    .addContainerGap(131, Short.MAX_VALUE))
    );
    gl_panel.setVerticalGroup(
    gl_panel.createParallelGroup(Alignment.LEADING)
    .addGroup(gl_panel.createSequentialGroup()
    .addContainerGap()
    .addComponent(lblNewLabel)
    .addContainerGap(18, Short.MAX_VALUE))
    );
    panel.setLayout(gl_panel);
    contentPane.setLayout(gl_contentPane);

    }
    }



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