I have a new installation of eclipse and am trying to run swt programs but get this error message, how can I solve this? thanks
Xubuntu 20.04.
eclipse version 2019-12
Exception in thread "main" java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons:
no swt-gtk-3836 in java.library.path: [/usr/java/packages/lib, /usr/lib/x86_64-linux-gnu/jni, /lib/x86_64-linux-gnu, /usr/lib/x86_64-linux-gnu, /usr/lib/jni, /lib, /usr/lib]
no swt-gtk in java.library.path: [/usr/java/packages/lib, /usr/lib/x86_64-linux-gnu/jni, /lib/x86_64-linux-gnu, /usr/lib/x86_64-linux-gnu, /usr/lib/jni, /lib, /usr/lib]
Can't load library: /usr/lib/jni/libswt-gtk-3836.so
Can't load library: /usr/lib/jni/libswt-gtk.so
Can't load library: /home/cr/.swt/lib/linux/x86_64/libswt-gtk-3836.so
Can't load library: /home/cr/.swt/lib/linux/x86_64/libswt-gtk.so
at org.eclipse.swt.internal.Library.loadLibrary(Library.java:335)
at org.eclipse.swt.internal.Library.loadLibrary(Library.java:240)
at org.eclipse.swt.internal.C.<clinit>(C.java:21)
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 tree.main(tree.java:13)