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import java.awt.*;import javax.swing.*;
public class BackgroundTest {
public static void main(String[] args) {
new KFrame();
}
}
class KFrame extends JFrame {
KFrame() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 关闭窗口后操作为退出程序
setSize(500, 500);// 程序窗口尺寸
setVisible(true);// 窗口显示
JPanel component = new KComponent();
add(component);
component.setBackground(Color.YELLOW);//设置背景颜色(可是没有用) }
}
class KComponent extends JPanel {
public void paintComponent(Graphics g) { g.drawString("King's", 150, 150);
}
}
public void paintComponent(Graphics g) {
g.drawString("King's", 150, 150);
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawString("King's", 150, 150);
}