March 8, 2021
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User Code: Using the Windows JTree Icons in Any Look and Feel

  • By Steve Rylander
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Here's how you can use the expand and collapse node icons (on a JTree) from the Windows "look and feel" within another look and feel.

Place the following lines at the beginning of your application:

UIManager.put("Tree.expandedIcon",  new WindowsTreeUI.ExpandedIcon()); 
UIManager.put("Tree.collapsedIcon", new WindowsTreeUI.CollapsedIcon());

Also, include the following import in the class: import com.sun.java.swing.plaf.windows.*;

Any JTree objects will now use the plus and minus icons!

This article was contributed by Steve Rylander.

This article was originally published on May 17, 2001

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