Getting Compilation error in the given code,

Question

Hello:
If i use setResizable(false), then maximization option will be disabled,but i want to do close and minimization option will be disabled, then what methods shall i use? Although you have given setClosable(false) and setIconifiable(false), but both methods are not working properly, plz set the methods in the given code or plz give the proper code what i need to use.
I shall be highly grateful to you, if you kindly help me.
import java.awt.*;
import javax.swing.*;
public class Test{
          public static void main(String args[]){
               SampleFrame frame = new SampleFrame();
                    frame.setDefaultCloseOperation(3);
                    frame.setVisible(true);
class SampleFrame extends JFrame{
          public SampleFrame(){
               setSize(width,height);
               setResizable(false);
               setClosable(false); // getting error
               setIconifiable(false); // getting error
public static final int width = 300;
public static final int height = 200;
}

Answer 1

I'd post the simple answer, but the reply button never seems to work on your posts.