JButton set the button text to a variable

Question

I will make a java game similar to cookie clickers, but is seems that I can't put a variable as a text in the button.

This is what is causing the problems, because the variable isn't a string(I cut out the other part of the code, because it's not important for now):

import javax.swing.JFrame;
import javax.swing.JButton;

public class Frame {

    public static int num1 = 0;

    public static void main(String[] args){

        JFrame f = new JFrame("Cookie Clicker");
        JButton b1 = new JButton(num1);

        f.setSize(500, 300);
        f.setVisible(true);
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(b1);
    }
}

As you can see there's the num1 variable in there and it won't let it to be there. Any ideas how to make it work?

You have to convert the int number to a String, e.g. new JButton(String.valueOf(num1)) — Holger
– Holger, Commented Jun 12, 2015 at 18:59
The JButton function is public JButton(String text, Icon icon). Where icon is provided by default if not passed. But the text should be String. You can do new JButton(""+num1); — user3337714
– user3337714, Commented Jun 12, 2015 at 19:04
ok, both ways work, but how do I change the text in the GridLayout buttons by a code? This is the code for one GridLayout button: buttonPanel1.add(new JButton(num1 + " Cookies!")); — Tom Lenc
– Tom Lenc, Commented Jun 12, 2015 at 19:22

VILLAIN bryan · Accepted Answer · 2015-06-12 19:10:07Z

3

See: http://docs.oracle.com/javase/7/docs/api/javax/swing/JButton.html

enter image description here

There exists no constructor for the following:

new JButton(int);

For converting int to String see: http://docs.oracle.com/javase/7/docs/api/java/lang/String.html ... more specifically, use:

enter image description here

Example use of String.valueOf(int):

int fiveInt = 5;
String fiveString = String.valueOf(fiveInt); // sets fiveString value="5"

edited Jun 12, 2015 at 19:10

answered Jun 12, 2015 at 19:01

VILLAIN bryan

7516 silver badges24 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

hpopiolkiewicz · Accepted Answer · 2015-06-12 19:00:42Z

1

Try to get the value of int to String:

JButton b1 = new JButton(String.valueOf(num1));

answered Jun 12, 2015 at 19:00

hpopiolkiewicz

3,6574 gold badges26 silver badges39 bronze badges

Comments

Community · Accepted Answer · 2017-05-23 11:59:47Z

1

You need to make a string representation of your integer variable, as described here: How do I convert from int to String?.

edited May 23, 2017 at 11:59

CommunityBot

11 silver badge

answered Jun 12, 2015 at 18:59

Scott Hunter

50k12 gold badges65 silver badges107 bronze badges

1 Comment

Olivier Poulin Over a year ago

Although the information presented in your link is useful, just linking to a source isn't usually considered a quality answer. Can you elaborate?

Collectives™ on Stack Overflow

JButton set the button text to a variable

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related