The classifier ( win32.win32.x86_64 ) encodes both OS and architecture. For other platforms:
Download the correct 64-bit SWT JAR from the official Eclipse downloads (https://download.eclipse.org/eclipse/downloads/) or Maven Central. Replace the old 32-bit JAR in your classpath. cannot load 32-bit swt libraries on 64-bit jvm
This error occurs because (like the DLLs used by SWT) must match the "bitness" of the process loading them . A 64-bit Java Virtual Machine (JVM) cannot load 32-bit libraries due to operating system limitations in how memory addresses are handled. The classifier ( win32
If you get Unrecognized option: -d32 , it's not available. Don't waste time here – fix the library instead. cannot load 32-bit swt libraries on 64-bit jvm
if "%PROCESSOR_ARCHITECTURE%"=="AMD64" ( set SWT_JAR=swt-win64.jar ) else ( set SWT_JAR=swt-win32.jar ) java -cp %SWT_JAR%;your-app.jar com.yourcompany.Main