I was having a very similar error in 12.04:
java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
no swt-gtk-3740 in java.library.path
...
Duane's work around worked for me also, with the following minor variation since I have a 32 bit machine:
$ cp /usr/lib/jni/libswt-*3740.so ~/.swt/lib/linux/x86
I was having a very similar error in 12.04: UnsatisfiedLink Error: Could not load SWT library. Reasons:
java.lang.
no swt-gtk-3740 in java.library.path
...
Duane's work around worked for me also, with the following minor variation since I have a 32 bit machine: jni/libswt- *3740.so ~/.swt/ lib/linux/ x86
$ cp /usr/lib/
Thanks for your help!