• Linguagem

    Java utilização Swing

  • Descrição

    Número par ou ímpar

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

public class NumeroParOuImpar extends JFrame implements ActionListener {

    private static final long serialVersionUID = 1L;
    private JTextField field_numero;
    private JButton button;

    public Algoritmo() {
        field_numero = new JTextField(4);
        button = new JButton("Processo");
        Container pane = getContentPane();
        pane.setLayout(new BorderLayout());
        JPanel panel, subpanel;
        panel = new JPanel(new BorderLayout());
        subpanel = new JPanel(new GridLayout(1, 1));
        subpanel.add(new JLabel("Digite o valor do numero:"));
        panel.add(subpanel, BorderLayout.WEST);
        subpanel = new JPanel(new GridLayout(1, 1));
        subpanel.add(field_numero);
        panel.add(subpanel);
        pane.add(panel, BorderLayout.NORTH);
        panel = new JPanel(new FlowLayout());
        panel.add(button);
        pane.add(panel);
        button.addActionListener(this);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setLocationRelativeTo(null);
    }

    @Override
    public void actionPerformed(ActionEvent actionEvent) {
        int numero;
        try {
            numero = Integer.parseInt(field_numero.getText());
        } catch (NumberFormatException numberFormatException) {
            return;
        }
        if(numero%2==0)
            javax.swing.JOptionPane.showMessageDialog(this, "O n\u00FAmero \u00E9 par");
        else
            javax.swing.JOptionPane.showMessageDialog(this, "O n\u00FAmero \u00E9 \u00EDmpar");
        pack();
    }

    public static void main(String[] args) {
        new Algoritmo().setVisible(true);
    }

}