如题不知为什么不能打印出那个pain里面的句子还有画出线来 请教了,谢谢了package javagui;
import java.awt.*;
public class JavaGUI extends Frame {
public JavaGUI(){
Dimension d = new Dimension(400,400);
setSize(d);
setTitle("The first GUI");
setVisible(true);
setBackground(Color.BLUE);
}
public void pain(Graphics g){
g.drawString("This is the first application", 10,40);
g.drawLine(0, 0, 11, 11);
}
public static void main(String[] args) {
// TODO code application logic here
System.out.println("Hello world");
JavaGUI myjavagui = new JavaGUI();
}
}
import java.awt.*;
public class JavaGUI extends Frame {
public JavaGUI(){
Dimension d = new Dimension(400,400);
setSize(d);
setTitle("The first GUI");
setVisible(true);
setBackground(Color.BLUE);
}
public void pain(Graphics g){
g.drawString("This is the first application", 10,40);
g.drawLine(0, 0, 11, 11);
}
public static void main(String[] args) {
// TODO code application logic here
System.out.println("Hello world");
JavaGUI myjavagui = new JavaGUI();
}
}
import java.util.*;import java.awt.*;import javax.swing.JFrame;
import javax.swing.JPanel;public class JavaGUI extends JFrame {
MyPanel1 mp; public JavaGUI() {
mp = new MyPanel1();
Dimension d = new Dimension(400,400);
setSize(d);
setTitle("The first GUI");
setVisible(true);
this.add(mp);
setBackground(Color.blue);
} public static void main(String[] args) {
JavaGUI myjavagui = new JavaGUI();
}
}class MyPanel1 extends JPanel {
public void paint(Graphics g) {
g.drawString("This is the first application", 10, 40);
g.setColor(Color.red);
g.drawLine(0, 0, 11, 11);
}}