Скачать или смотреть Adding Images on Button Click in Java Swing

Learn how to seamlessly add images to a JFrame in Java Swing upon button press, using ActionListener to enhance user interaction.
---
This video is based on the question https://stackoverflow.com/q/70799327/ asked by the user 'PeterPefi' ( https://stackoverflow.com/u/13211647/ ) and on the answer https://stackoverflow.com/a/70801129/ provided by the user 'Chris' ( https://stackoverflow.com/u/17865804/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Adding an image to a frame by button press

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Adding Images on Button Click in Java Swing

In this guide, we will explore a common problem among Java Swing developers: how to add an image to a GUI frame with the click of a button. This task often involves using JButton and ActionListener, and can trip up newcomers when they attempt to modify or display images. Let's break down the solution into manageable sections to help you understand how to accomplish this effectively.

Understanding the Problem

Imagine you've created a Java Swing application with a button, and you want to display an image when this button is clicked. At first glance, it may seem as simple as creating a new JLabel with an ImageIcon each time; however, this can lead to unexpected behavior, especially if not done correctly.

Common Mistake

A typical mistake is creating a new JLabel every time the button is pressed and adding it directly to your frame. This approach can clutter your GUI with multiple images and make it hard to manage how they are displayed.

The Solution

The key to successfully changing the displayed image in your application is to modify the existing JLabel instead of creating new ones. Here’s how to implement the solution effectively:

Step 1: Set Up the GUI Components

First, you need to define your main frame and create a label that will hold your image:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Initialize your Components

You’ll initialize all your components inside the initialize() method. Ensure you've set a default image in your piclabel:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Modify the ActionListener

Now, instead of adding a new JLabel every time the button is clicked, modify the existing label's icon in your button's action listener:

[[See Video to Reveal this Text or Code Snippet]]

Updating the GUI for Adding New Images

If your goal is to add multiple images rather than replacing the current one, consider using a Box with a BoxLayout inside a JScrollPane:

Step-by-Step for Adding New Images

Declare your box and scroll pane at the class level:

[[See Video to Reveal this Text or Code Snippet]]

Set up the Box and ScrollPane in the initialize() method:

[[See Video to Reveal this Text or Code Snippet]]

Modify the ActionListener to add new images:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

With the steps outlined in this post, you should now be able to effectively add images to a Java Swing GUI upon button click. By utilizing an existing JLabel or managing multiple images with a box layout, users can enjoy an interactive and visually dynamic application. Keep experimenting, and soon you'll master the intricacies of Java Swing GUI development!

If you have any questions or need further assistance with Java GUI development, feel free to leave a comment below!