JavaSwing布局GridLayout的用法

import java.awt.Container;

import java.awt.GridLayout;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import javax.swing.JButton;

import javax.swing.JFrame;

public class GridLayoutDemo {

public GridLayoutDemo(){

JFrame f = new JFrame();

Container contentPane = f.getContentPane();

contentPane.setLayout(new GridLayout(6,1));//6行1列

contentPane.add(new JButton("first"));

contentPane.add(new JButton("second"));

contentPane.add(new JButton("third"));

contentPane.add(new JButton("fourth"));

contentPane.add(new JButton("fifth"));

contentPane.add(new JButton("This is the last button"));

f.setTitle("GridLayout");

f.pack();

f.setVisible(true);

f.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

System.exit(0);

}

});

}

public static void main(String[] args) {

// TODO Auto-generated method stub

GridLayoutDemo b = new GridLayoutDemo();

}

}

构造函数：

GridLayout() 默认1行1列

GridLayout(int rows,int cols) rows行，cols列

CridLayout(int rows,int cols,int hgap,int vgap)
设置组件之间的间距