Recovery of the object in the Second Listner Action

Hello

I created a stack class using vectors (VectorStack2). Now, I want to set up this operation with the help of the buttons. I created a push button. His action Listener creates an object of class VectorStack2 that calls the push (...) method of the VectorStack2 class in the method actionPerformed (...) of Action1. Now I want to recover this object of class VectorStack2 in the second action listener for the key of Pop so that the floor to invoke the pop() method.

I don't understand how to do it?

Some body please guide me. I put "?" symbols on the line following the object I want to recover in the second actionlistener actionPerformed method.

Javax.swing import. *;

Import Java.util;

import java.awt.*. *;

java.awt.event import. *;

Class VectorStack2 {}

private String [] stArr = new String [5];

Vector < number > elements around.

private int tos;

VectorStack2 () {}

items = new Vector < integer > ();

TOS = - 1;

}

empty() {Boolean}

If (tos == - 1).

Returns true;

Returns false;

}

Object (pop) {}

{if (Empty ())}

JOptionPane.showMessageDialog (null, "Stack overflow");

System.Exit (1);

}

Return items.remove (tos);

}

public void push (Integer x) {}

Items.Add (++ PE, x);

}

public class useVSButt {}

Public Shared Sub main (String [] args) {}

int i;

int nLength = 0;

int lLength = 0;

NST string ="";

String lStr ="";

JFrame frame = new JFrame ("Test");

frame.setVisible (true);

frame.setSize (500,200);

frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

JPanel Panel = new JPanel();

Frame.Add (Panel);

JButton button = new JButton ("Push");

Panel.Add (Button);

button.addActionListener (new Action1());

JButton button2 = new JButton ("Pop");

Panel.Add (button2);

button.addActionListener (new Action2());

} //main

} //useStack

class Action1 implements ActionListener {

VectorStack2 objVS;

public void actionPerformed (ActionEvent e) {}

int i;

JFrame frame2 = new JFrame ("Clicked");

frame2.setVisible (true);

frame2. SetSize (200,200);

JLabel label = new JLabel ("you clicked me");

JPanel Panel = new JPanel();

frame2. Add (Panel);

Panel.Add (label);

int [] int1 = {100, 200, 300, 400, 500};

VectorStack2 obj = new VectorStack2 ();

for (i = 0; i < 5; ++ I)

obj.push (new Integer (int1 [i]));

HOW TO OBTAIN THIS ITEM from VectorStack2 IN Action2 actionPerformed method?

}

class Action2 implements ActionListener {

public void actionPerformed (ActionEvent e) {}

int i;

JFrame image3 = new JFrame ("OKNO 3");

frame3.setVisible (true);

frame3. SetSize (200,200);

JLabel label = new JLabel ("kliknales");

JPanel Panel = new JPanel();

frame3. Add (Panel);

Panel.Add (label);

VectorStack2 obj = new VectorStack2();

for (i = 0; i < 5; ++ I)

JOptionPane.showMessageDialog (null, "burst val is" + obj.pop ());

}

Please watch carefully on these lines in your code:

     JButton button = new JButton("Push");
     panel.add(button);
     button.addActionListener (new Action1(objVStack));

     JButton button2 = new JButton("Pop");
     panel.add(button2);
     button.addActionListener (new Action2(objVStack));

The lesson here is: always choose names of significant for login!

Good bye

DPT

Tags: Java

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Recovery of the object in the Second Listner Action

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