本例是为了体现Java中布局的使用，在一个Frame上添加了两个Panel，在两个Panel上分别体现了一个Butoon，一个Label和一个TextField的边框布局和网格布局，而Frame本身使用了网格布局。 import java.awt.*;import java.awt.event.*; class TwoLayout extends WindowAdapter implements WindowListener,ActionListener{Frame f;Panel pborder,pgrid; Label lborder,lgrid;TextField tborder,tgrid;Button bborder,bgrid; public static void main(String args[]) {TwoLayout a=new TwoLayout();  a.execute(); } public void execute() {f=new Frame("布局");  f.setLayout(new GridLayout(2,1));  f.addWindowListener(this);  pborder=new Panel();pgrid=new Panel();  f.add(pborder);f.add(pgrid);  pborder.setLayout(new BorderLayout());  pgrid.setLayout(new GridLayout(3,1));  lborder=new Label();tborder=new TextField();bborder=new Button("边框布局复制");  lgrid=new Label();tgrid=new TextField();bgrid=new Button("网格布局复制");  lborder.setBackground(Color.yellow);lgrid.setBackground(Color.yellow);  pborder.add("East",bborder);pgrid.add(lgrid);  pborder.add("North",lborder);pgrid.add(tgrid);  pborder.add("Center",tborder);pgrid.add(bgrid);  bborder.addActionListener(this);  bgrid.addActionListener(this);  f.setSize(300,150);f.setVisible(true); } public void actionPerformed(ActionEvent e) {if(e.getSource()==bborder)  {String s=lborder.getText()+tborder.getText();   lborder.setText(s);  }  else  {String s=lgrid.getText()+tgrid.getText();   lgrid.setText(s);  } } public void windowClosing(WindowEvent e) {System.exit(0); }}

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