Cannot find symbol error when calling methods in an extended JButton class

» java » Cannot find symbol error when calling methods in an extended JButton class

By : user2949617

Date : November 17 2020, 01:00 AM

around this issue setUpButton is a custom method of ButtonDefault not JButton. Therefore the array declaration should be

code :

private ButtonDefault[][] buttons = new ButtonDefault[ROWS][COLUMNS];

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cannot find symbol in JLabel extended class

By : Bhavani

Date : March 29 2020, 07:55 AM

I wish this helpful for you Is this not valid? , The method addActionListener is not available for JLabel components.

Abstract Error with JButton and Cannot Find Symbol on interface class

By : Amit

Date : March 29 2020, 07:55 AM

it helps some times I'm working on a simple Java GUI, but an error came out about abstract methods. I marked the codes that has an error with a comment ERROR - etc. The interface class is at the bottom, which also has an error about cannot find symbol. It is marked.

code :

public interface ActionListener {

    public void actionPerformed(ActionEvent e);
}

import java.awt.event.ActionEvent;

public interface ActionListener {

    //ERROR - Cannot find symbol
    //symbol: class Action Event
    public void actionPerformed(ActionEvent e);
}

import java.awt.event.*;

public abstract class OurActionListener implements ActionListener {

    public abstract void actionPerformed(ActionEvent e);
}

Cannot find symbol in extended class

By : cyrilevan

Date : March 29 2020, 07:55 AM

it fixes the issue Hello I have two classes into the package "pack3" One is the extension of the other one. The "Up" class is:

code :

return k+", "+super.ToString();

Cant seem to get my Jbutton to lock. Error: Cannot find symbol

By : aarinero

Date : March 29 2020, 07:55 AM

around this issue This is my source code for a tic tak toe game I am trying to make, what I would like to happen is for a player to press a Jbutton then have the button disabled. I am aware that the command is setEnbale(false) in order for it to lock, but it is not working for me. I have 9 buttons with action listener assigned to them. The program is able to distinguish between player 1 and 2 through the action listener. But when I try to lock the cells as well the " error : can not find symbol some up. " come up. What exactlyam I doing wrong? , Use,
whatPlayer.setEnabled(b) not whatPlayer.setEnable(b)

Set method cannot find symbol in extended class?

By : Reymond Jaron

Date : March 29 2020, 07:55 AM

I hope this helps . For as far as I can see the problem is in your constructor and not in your setters. Parameters and used names don't match -> nh is nHours ( in params ) and w = wages (in params )
Change to constructor should be made to:

code :

public PTEmployee(String name, String ssn, String position, Date dateOfBirth,
                 float pay, int nHours, float wages)
{
    super(name,ssn,position,dateOfBirth,pay);
    this.nHours = nHours;
    this.wages = wages;
    pay = 0;
}