exercise22_7.java

java程序设计 机械工业出版社 书籍代码

// Exercise22_7.java: Use tabbed pane
import java.awt.*;
import javax.swing.*;

public class Exercise22_7 extends JApplet {
  // Create a tabbed pane to hold figure panels
  private JTabbedPane jtpPanels = new JTabbedPane();

  public Exercise22_7() {
    // Create intPanel for integer arithmetic
    JPanel intPanel = new IntPanel();

    // Create rationalPanel for rational arithmetic
    JPanel rationalPanel = new RationalPanel();

    jtpPanels.add(intPanel, "Integer Operations");
    jtpPanels.add(rationalPanel, "Rational Operations");

    //set FlowLayout in the frame
    getContentPane().setLayout(new BorderLayout());
    getContentPane().add(jtpPanels, BorderLayout.CENTER);
  }

  public static void main(String[] args) {
    Exercise22_7 applet = new Exercise22_7();
    JFrame frame = new JFrame();
    //EXIT_ON_CLOSE == 3
    frame.setDefaultCloseOperation(3);
    frame.setTitle("Exercise22_7");
    frame.getContentPane().add(applet, BorderLayout.CENTER);
    applet.init();
    applet.start();
    frame.setSize(400,320);
    Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
    frame.setLocation((d.width - frame.getSize().width) / 2,
      (d.height - frame.getSize().height) / 2);
    frame.setVisible(true);
  }
}