Install libswt-gtk-3-jni by entering the following commands in the terminal:
sudo apt update sudo apt install libswt-gtk-3-jni
Description:
Standard Widget Toolkit for GTK+ JNI library
The Standard Widget Toolkit (SWT) is a fast and rich Java GUI toolkit. For platforms with existing SWT implementations it provides efficient, portable and fast access to native controls and user interface facilities. . This package includes the JNI libraries (atk, awt, gtk, pi).
Homepage: http://www.eclipse.org/swt/
Version: 3.8.2-5
Section: universe/libs