borderlayoutframe.java~22~

jbuilder2006一书的所有源代码

package layout;

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

public class BorderLayoutFrame extends JFrame {
  JPanel contentPane;
  //创建BorderLayout布局
  BorderLayout borderLayout1 = new BorderLayout();
  //创建5个按钮
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  JButton jButton3 = new JButton();
  JButton jButton4 = new JButton();
  JButton jButton5 = new JButton();

  public BorderLayoutFrame() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }

  private void jbInit() throws Exception  {
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("BorderLayout示例");
    //设置按钮的文件属性
    jButton1.setText("北");
    jButton2.setText("中");
    jButton3.setText("西");
    jButton4.setText("东");
    jButton5.setText("南");
    //设置BorderLayout布局的水平空隙
    borderLayout1.setHgap(10);
    //设置BorderLayout布局的垂直空隙
    borderLayout1.setVgap(10);
    //为面板加入5个按钮,BorderLayout.NORTH表示在北面显示按钮
    contentPane.add(jButton1, BorderLayout.NORTH);
    contentPane.add(jButton2, BorderLayout.CENTER);
    contentPane.add(jButton3, BorderLayout.WEST);
    contentPane.add(jButton4, BorderLayout.EAST);
    contentPane.add(jButton5, BorderLayout.SOUTH);
  }
  //窗口关闭时清空内存
  protected void processWindowEvent(WindowEvent e) {
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }
}