gridlayouttest.java

《Java程序设计与应用》-张仕斌-源程序 《Java程序设计与应用》-张仕斌-源程序

//GridLayoutTest.java
import java.awt.*;
import javax.swing.*;

public class GridLayoutTest extends JFrame {
	
	public GridLayoutTest() {
		super("GridLayout Test");
		
		JButton btn = null;
		//获得当前窗口的容器
		Container cp = this.getContentPane();
		//设置布局方式为GridLayout
		cp.setLayout(new GridLayout(3,7));
		//在21个网格中加入20个按钮
		for (int i = 1 ; i <= 20 ; i++) {
			btn = new JButton(i + "");
			cp.add(btn);
		}
	}
	
	public static void main(String[]args) {
		GridLayoutTest glt = new GridLayoutTest();
		glt.setSize(400,200);
		glt.setDefaultCloseOperation(EXIT_ON_CLOSE);
		glt.setVisible(true);
	}
}