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//JSilderDemo
package JSliderdemo;
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.event.*;
public class JSliderDemo
{
JFrame frame=new JFrame("Chevi.C JSilder");
//添加水平的slider
JSlider slider=new JSlider(JSlider.HORIZONTAL,0,100,50);
int point=50;
JPanel panel=new JPanel()
{
public void Paint(Graphics g)
{
g.drawRect(50,
100,
point,
point);
}
};
public JSliderDemo()
{
frame.setBounds(400,500,400,500);
frame.setLayout(new BorderLayout(5,5));
//确定是否在滑块上绘制滑道
slider.setPaintTrack(true);
//确定是否在滑块上绘制标签。
slider.setPaintLabels(true);
//确定是否在滑块上绘制刻度标记。
slider.setPaintTicks(true);
panel.setVisible(true);
frame.getContentPane().add(slider,BorderLayout.NORTH);
frame.getContentPane().add(panel,BorderLayout.CENTER);
frame.setVisible(true);
frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
//当侦听器的目标已更改其状态时调用
slider.addChangeListener(this);
//滑块事件监听类
class MyChangeListener implements ChangeListener
{
JSliderDemo demo;
public MyChangeListener(JSliderDemo s)
{
demo=s;
}
public void stateChanged(ChangeEvent e)
{
JSlider source = (JSlider)e.getSource();
demo.point=source.getValue();
};
}
}
};