paintjbutton.java

来自「java相关的j2me,j2se的一些相关资料」· Java 代码 · 共 39 行

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

public class PaintJButton extends JButton {
    public PaintJButton(String name) {
        super(name);
        this.setContentAreaFilled(false);
    }    
    protected  void paintComponent(Graphics g){
        g.setColor(Color.LIGHT_GRAY);
        g.fillOval(0,0,200,35);
    }
    
    public static void main(String args[]){
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (IllegalAccessException ex) {}
          catch (ClassNotFoundException ex)  {} 
          catch (UnsupportedLookAndFeelException ex) {} 
          catch (InstantiationException ex) {}
        
        JFrame frame = new JFrame();
        frame.setLayout(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setBounds(100,100,500,500);
        frame.setVisible(true);
        
        PaintJButton button = new PaintJButton("dddddddd");
        button.setVisible(true);
        button.setBounds(200,200,350,350);
        
        frame.add(button);
    }
}