刚开始编写,发现按钮只有鼠标划过之后才会显示按钮,而Label就是不现实,求助解决方法。
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class about extends JFrame{
Image img;
static JButton bt1=new JButton("确定");
JLabel la1=new JLabel("Java播放器");
public static void main(String args[])
{
about ab=new about();
}
about()
{
super("关于");
setSize(600,300);
setBackground(Color.green);
setResizable(false);
setVisible(true);
setLayout(null);
add(bt1);
bt1.setBounds(455, 240, 85, 23);
bt1.setFocusPainted(false);
add(la1);
la1.setBounds(150, 30, 75, 23);
la1.setFont(new Font("行楷",Font.BOLD,15));
Toolkit tk=getToolkit();
img=tk.getImage("image//view.gif");
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){System.exit(0);}});
}
public void paint (Graphics g)
{
int wt=img.getWidth(this);
int ht=img.getHeight(this);
g.drawImage(img, 3, 20, wt, ht, this);
}
}
将JFrame改成Frame,将JButton改成Button就没有这个问题