Why output is not printed

Question

https://code.sololearn.com/cJXXuj7rx62J/?ref=app

Answer 1

showing error......

Answer 2

ok

Answer 3

again showing error

Answer 4

aswini this is construter why we need call that method

Answer 5

you have to call program function... call it like.... frame.program(); ...after object creation in main..

Answer 6

Try this one in computer or laptop it works perfect..

import javax.swing.JFrame;
class Demo{
JFrame f1=new JFrame();
Demo(){
f1.setSize(50,50);
f1.setVisible(true);
f1.setLayout(null);
}
}
public class Program
{
public static void main(String[] args) {
Demo d=new Demo();
}
}

Answer 7

create object of Program class as frame , call frame.Program();...this is working on laptop/pc ..... but I'll suggest you not to use the function name same as class name it is not a good programming practice..

Answer 8

I would use:

Program frame = new Program();
frame.Program();

However you can't run GUI with Java in the sololearn sandbox.

Example:
https://code.sololearn.com/cPvoFJ9X27Zp/?ref=app

Answer 9

look... void Program() is not a constructor..... it is a method..constructor is always without return type... it should be only.. Program()....