Question

I am almost done with one Java project that I have been developing on Linux. Now I need to build and test it on Windows. So I have installed Eclipse on Windows XP 32-bit, and imported my project. All dependencies of project are in jar files in lib folder, and on Linux everything works well, but on Windows XP I get following error:

Exception in thread "main" java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons: 
    no swt-pi-gtk-4234 in java.library.path
    no swt-pi-gtk in java.library.path
    Can't load library: C:\Documents and Settings\firzen\.swt\lib\win32\x86\swt-pi-gtk-4234.dll
    Can't load library: C:\Documents and Settings\firzen\.swt\lib\win32\x86\swt-pi-gtk.dll

    at org.eclipse.swt.internal.Library.loadLibrary(Library.java:331)
    at org.eclipse.swt.internal.Library.loadLibrary(Library.java:240)
    at org.eclipse.swt.internal.gtk.OS.<clinit>(OS.java:22)
    at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:63)
    at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:54)
    at org.eclipse.swt.widgets.Display.<clinit>(Display.java:133)
    at gui.Frontend.<init>(Frontend.java:51)
    at Fighter.main(Fighter.java:18)

I have searched for these DLLs, but I have failed to find them. Where can I download these DLL files?

Thanks in advance.

Answer 1

Correct DLL files are inside swt.jar for your particular platform. You need to download SWT for Windows (not x86_64), e.g. “swt-4.2.1-win32-win32-x86.zip” from http://download.eclipse.org/eclipse/downloads/drops4/R-4.2.1-201209141800/#SWT.

It looks as if you have tried to use swt.jar from linux SWT. That won’t work. You need to download platform-specific SWT package For each platform that you want to support.