import java.applet.Applet;
import java.awt.*;public class SimplePaint{
public static void main(String agrs[]){
Frame f=new Frame();
Canvas can=new Canvas(); //把你的继承了Canvas的类代替这里的Canvas!!!
f.add(can);
f.setSize(300,200);
f.setVisible(true);
}
}class ccc extends Canvas{
public void paint(Graphics g){
g.setColor(Color.black);
g.fillRect(0,0,300,300);
g.setColor(Color.white);
g.fillOval(30,30,50,50);
}
}也就是
public class SimplePaint{
public static void main(String agrs[]){
Frame f=new Frame();
ccc can=new ccc(); //把你的继承了Canvas的类代替这里的Canvas!!!
f.add(can);
f.setSize(300,200);
f.setVisible(true);
}
}
import java.awt.*;public class SimplePaint{
public static void main(String agrs[]){
Frame f=new Frame();
Canvas can=new Canvas(); //把你的继承了Canvas的类代替这里的Canvas!!!
f.add(can);
f.setSize(300,200);
f.setVisible(true);
}
}class ccc extends Canvas{
public void paint(Graphics g){
g.setColor(Color.black);
g.fillRect(0,0,300,300);
g.setColor(Color.white);
g.fillOval(30,30,50,50);
}
}也就是
public class SimplePaint{
public static void main(String agrs[]){
Frame f=new Frame();
ccc can=new ccc(); //把你的继承了Canvas的类代替这里的Canvas!!!
f.add(can);
f.setSize(300,200);
f.setVisible(true);
}
}
解决方案 »
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