jlabeldemo.java

精通Java核心技术的随书源代码

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

public class JLabelDemo extends JFrame {
     // 构造方法
    public JLabelDemo()
    {
		super( "LabelDemo" );
		
		// 获取content pane并设置布局管理器
		Container container = getContentPane();
		container.setLayout( new FlowLayout() );
		
		//构造一个文本label
		JLabel label1 = new JLabel( "This is a label with only text" );
		container.add( label1 );
	
		//构造一个图标label
		Icon icon = new ImageIcon( "icon.gif" );
		JLabel label2 = new JLabel( icon );
		container.add( label2 );
	
		// 构造一个既有文字又有图标的label
		JLabel label3 = new JLabel( "label with text and icon", icon,SwingConstants.LEFT );
		container.add( label3 );
		
		setSize( 190,120 );
		setVisible( true );
     }
	
     public static void main( String args[] )
     {
	     JLabelDemo ld = new JLabelDemo();
	     ld.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
     }
}