FlatLaf - Flat Look and Feel

FlatLaf is a modern open-source cross-platform Look and Feel for Java Swing desktop applications.

It looks almost flat (no shadows or gradients), clean, simple and elegant. FlatLaf comes with Light, Dark, IntelliJ and Darcula themes, scales on HiDPI displays and runs on Java 8 or newer.

The look is heavily inspired by Darcula and IntelliJ themes from IntelliJ IDEA 2019.2+ and uses almost the same colors and icons.

Features

• Light, Dark, IntelliJ and Darcula themes
• scales on HiDPI displays
• cross-platform
• high quality
• lightweight (under 200 KB; no dependencies)
• minimalistic, elegant and modern
• scalable vector icons
• discreet hover effects
• focused border
• customizable
• right-to-left support
• runs on Java 8 or newer
• Java 9 module (module name is com.formdev.flatlaf)
• GUI builder friendly
• MigLayout compatible

Demo

Run demo with java -jar flatlaf-demo-<version>.jar (or double-click it). Requires Java 8 or newer.

Download

FlatLaf binaries are available on JCenter and Maven Central.

If you use Maven or Gradle, add a dependency with following coordinates to your build script:

groupId:     com.formdev
artifactId:  flatlaf
version:     0.18

Otherwise download flatlaf-<version>.jar here:

Getting started

To enable FlatLaf, add following code to your main method before you create any Swing component:

FlatLightLaf.install();

// create UI here...

or

try {
    UIManager.setLookAndFeel( new FlatLightLaf() );
} catch( Exception ex ) {
    System.err.println( "Failed to initialize LaF" );
}

// create UI here...

Available themes

• Flat Light
  (class com.formdev.flatlaf.FlatLightLaf)
• Flat Dark
  (class com.formdev.flatlaf.FlatDarkLaf)
• Flat IntelliJ
  (class com.formdev.flatlaf.FlatIntelliJLaf)
  looks like IntelliJ theme from IntelliJ IDEA 2019.2+
• Flat Darcula
  (class com.formdev.flatlaf.FlatDarculaLaf)
  looks like Darcula theme from IntelliJ IDEA 2019.2+

License

FlatLaf is open source licensed under the Apache 2.0 License

Source code

The FlatLaf source code is hosted on GitHub:
github.com/JFormDesigner/FlatLaf

Issues

Please report issues on GitHub:
github.com/JFormDesigner/FlatLaf/issues