gridbagtest.java

java经典10例子

import java.awt.*;
import java.applet.Applet;

public class GridBagTest extends Frame{
	public GridBagTest(){ 
		super("GridBagLayoutDemo");
		Panel panel1 = new Panel();
		panel1.setLayout(new GridBagLayout());
		GridBagConstraints gbdc=new GridBagConstraints();
		gbdc.fill=GridBagConstraints.BOTH;//向两面扩张
		gbdc.weightx=1;//设置行（weightx）的“重量”
		gbdc.weighty=1;
		gbdc.gridwidth=2;//添加进入的部件就会变成为2个单元格的宽度。
		gbdc.gridx=0;//另起一行，从最左边的单元格开始填充。
		panel1.add(new Button("No.1"),gbdc);
		gbdc.gridx=2;
		gbdc.gridwidth=1;
		gbdc.gridheight=2;
		panel1.add(new Button("No.2"),gbdc);
		gbdc.gridx=0;
		gbdc.gridheight=1;
		panel1.add(new Button("No.3"),gbdc);
		gbdc.gridx=1;
		panel1.add(new Button("No.4"),gbdc);
		add(panel1);
	}
	
	public static void main(String args[]){
		GridBagTest gb = new GridBagTest();
		gb.setSize(200,200);
		gb.setVisible(true);	
	}
}