Main plug-in for the SWT user interface library.

Setting the classpath:

To compile this project, you need to set the classpath specific for your operating and windowing system. For this, rename one of the following files to .classpath:

  • .classpath_win32 - Windows
  • .classpath_cocoa - Mac OS X
  • .classpath_gtk - Linux and all Unix variants

Similar class paths renaming should be done for ./examples/org.eclipse.swt.snippets/

To see these files, you may have to remove the filter for “.* resources”:

  • In the Project Explorer: view menu > Customize View... > Filters
  • In the Package Explorer: view menu > Filters...


  • SWT Binaries
    You also need to clone the binary Git repository:
    and import the project for your platform into your workspace.

    Ensure that the fragment matching your windowingSystem.operatingSystem.cpuArchitecture
    (e.g. org.eclipse.swt.gtk.linux.x86_64) is open in your workspace.
    The fragments provide the platform-specific native libraries.

Using Assertions:

Assertions are added to the code. These don't run in production, but they do when:

  • JUnits are ran, they turn on assertions by default.
  • If you run a java run configuration and add ‘-ea’ to the ‘VM Arguments’

Assertions look like:

assert expression ;
assert expression : msg ;


More Information:

See the in the main directory of the Git repository for this project to learn more about SWT development.