Question

I can’t understand why this error is coming

class Temp extends java.awt.Frame
{
Frame f = new Frame(); // error is coming in this line 
// code//
}

I know this is silly one but can’t getting reason

Answer 1

I don’t know why you’re creating a Frame if you’re extending Frame. But in any case, are you importing java.awt.* or java.awt.Frame?

jcomeau@intrepid:/tmp$ cat Temp.java; java Temp
import java.awt.*;
class Temp extends java.awt.Frame
{
Frame f = new Frame(); // error is coming in this line 
// code//
public static void main(String[] args) {
 System.out.println("this is a " + new Temp());
}
}
this is a Temp[frame0,0,0,0x0,invalid,hidden,layout=java.awt.BorderLayout,title=,resizable,normal]