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JLabel images array

For comparison, I’ve re-factored @HFOE’s example so that Ground implements Icon and indexes the array returned by values(). As value is an implementation detail, int[][] MAP could instead be Ground[][] MAP. Update: This variation illustrates Ground[][] MAP and adds TexturePaint. import java.awt.Color; import java.awt.Component; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.GridLayout; import java.awt.TexturePaint; import java.awt.geom.Rectangle2D; import … Read more

Java in Eclipse: Where do I put files on the filesystem that I want to load using getResource? (e.g. images for an ImageIcon)

For Eclipse, typically all you need to do is set up a folder somewhere within your source code directory. For instance, if the directory containing your source is /src then you can create a /src/resources folder to place your images/files in. Then, within your class you do a getResource(“/resources/image.png”) to retrieve it. You can also … Read more

How can I save the state of my program and then load it?

There are any number of possible choices… You could Use the Properties API, which provides save and load functionality. The API works like a Map, allowing you to store key/value pairs, which you can save and load as required. The API only allows you to store String values, so you would need to convert non-String … Read more

Scale the ImageIcon automatically to label size

This is a tricky question. You highlight the fact that you are using a JLabel to show the image, which is the standard way of doing things, but, JLabel is a complex little beast, with text, icon and text alignment and positioning. If you don’t need all that extra functionality, I would simply create yourself … Read more

Java Swing: Displaying images from within a Jar

To create an ImageIcon from an image file within the same jars your code is loaded: new javax.swing.ImageIcon(getClass().getResource(“myimage.jpeg”)) Class.getResource returns a URL of a resource (or null!). ImageIcon has a constructors that load from a URL. To construct a URL for a resource in a jar not on your “classpath”, see the documentation for java.net.JarURLConnection.