java -d32 -jar yourapp.jar If you get Unrecognized option: -d32 , it's not available. Don't waste time here – fix the library instead. If you're distributing a desktop app, don't bundle a specific swt.jar . Instead, use a launcher script that adds the correct SWT JAR based on the detected platform and architecture.
| Platform | Artifact ID (classifier part) | |---------------|----------------------------------------| | Windows 64-bit | org.eclipse.swt.win32.win32.x86_64 | | Linux 64-bit | org.eclipse.swt.gtk.linux.x86_64 | | macOS 64-bit | org.eclipse.swt.cocoa.macosx.x86_64 | | macOS ARM64 | org.eclipse.swt.cocoa.macosx.aarch64 | cannot load 32-bit swt libraries on 64-bit jvm
java -version Look for 64-Bit in the output. Example: java -d32 -jar yourapp