showjscrollbar.java

初学的好东西值得一看看欢迎下载观看使用

import javax.swing.JFrame;
import java.awt.FlowLayout;
import javax.swing.JScrollBar;
import javax.swing.JLabel;
import java.awt.event.AdjustmentListener;
import java.awt.event.AdjustmentEvent;
class ShowJScrollBar extends JFrame implements AdjustmentListener{
	FlowLayout flowLayout1=new FlowLayout();
	JScrollBar jScrollBar1=new JScrollBar(JScrollBar.HORIZONTAL);
	JScrollBar jScrollBar2=new JScrollBar(JScrollBar.VERTICAL,10,50,10,250);
	JLabel jLabel1=new JLabel("0");
	JLabel jLabel2=new JLabel("10");
	ShowJScrollBar(){
		super("滚动条示例");
		setSize(200,150);
		setDefaultCloseOperation(EXIT_ON_CLOSE);
		this.getContentPane().setLayout(flowLayout1);
		this.getContentPane().add(jScrollBar1);
		this.getContentPane().add(jLabel1);
		this.getContentPane().add(jScrollBar2);
		this.getContentPane().add(jLabel2);
		jScrollBar1.addAdjustmentListener(this);
		jScrollBar2.addAdjustmentListener(this);
		show();
	}
	public void adjustmentValueChanged(AdjustmentEvent e){
		int i;
		if(e.getSource()==jScrollBar1){
			i=jScrollBar1.getValue();
			jLabel1.setText(""+i);
		}
		else if(e.getSource()==jScrollBar2){
			i=jScrollBar2.getValue();
			jLabel2.setText(""+i);
		}
	}	
	public static void main(String[] args){
		ShowJScrollBar showJScroll1=new ShowJScrollBar();
	}
}