j3_42.java

来自「石志国著《JSP应用教程》」· Java 代码 · 共 17 行

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class HelloWorldJFC extends JComponent {
	public void paint(Graphics g){
    	g.setColor(Color.black);
        g.drawString ("HelloWorld",20,15);
    }
    public static void main(String args[]){
    	JFrame myFrame = new JFrame("Hello World!");
     	HelloWorldJFC jt = new HelloWorldJFC();
        myFrame.getContentPane().add("Center",jt);
        myFrame.setSize(100,50);
        myFrame.setVisible(true);
	}
}