How can i fix this?

Question

package prueba2.pkg1;
import javax.swing.*;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
/**
*
* @author msigl
*/
public class Prueba21 {
private int X; private int Y;
private String name;

public class Pestañas extends JFrame{
public Pestañas(){
super("new windows");
setLayout(null);
setSize(1920,1080);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
public class Botones extends JButton {
public Botones(int X,int Y, String name ){
super(name);
setLayout(null);
setBounds(X,Y,100,30);
setVisible(true);
}

}

/**
* {}
*/
public static void main(String[] args) {

int X = 0; /* i want to use the local variable X here but it says that it have to be final, but it woundn't work for this program, what can i do? */

ActionListener out1;
out1 = new ActionListener(){
public void actionPerformed(ActionEvent e){
X = 10;

}
};
Prueba21 pr = new Prueba21();
Pestañas W1 = pr.new Pestañas();

Botones B1 = pr.new Botones(X,250,"start"); /* here i use that variable */

Botones B2 = pr.new Botones(400,250,"end");
W1.setVisible(true);
W1.add(B1);
W1.add(B2);
}
}

Answer 1

Remove the int from int X = 0;

private int X;
-> already declared

So you only need to assign a value to it. X = 0;