Cannot Load 32-bit Swt Libraries On 64-bit Jvm < 2027 >

<dependency> <groupId>org.eclipse.platform</groupId> <artifactId>org.eclipse.swt.win32.win32.x86_64</artifactId> <version>3.125.0</version> </dependency> The classifier ( win32.win32.x86_64 ) encodes both OS and architecture. For other platforms:

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.

dumpbin /headers swt-win32.dll | find "machine" Or on Linux/macOS: cannot load 32-bit swt libraries on 64-bit jvm

Replace the swt.jar in your project's classpath with the correct one. If you use Maven, never just add swt.jar manually. Use the official Maven artifacts with classifiers:

Example (pseudo-code for a Windows launcher): <dependency> <groupId>org

You can force your 64-bit JVM to run as 32-bit using -d32 , but this is rarely supported . Most 64-bit JDKs do not include 32-bit runtime support.

Make sure you choose (e.g., Windows 64-bit , Linux 64-bit , macOS 64-bit ). If you're distributing a desktop app, don't bundle

| 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 |

file swt-gtk.so If it says x86 (32-bit) and your JVM is x64 (64-bit), you've found the mismatch. Method 1: Download the Correct SWT Build (Manual Fix) Go to the official SWT download page and select your platform + architecture.

dependencies implementation 'org.eclipse.platform:org.eclipse.swt.win32.win32.x86_64:3.125.0'