If you are running Java through your terminal or command line without a separate library of graphical user interface components, your "system.out.println ()" method may not use Unicode by default ...

When I run my Java code from Eclipse it works fine. When I run it from a terminal in the Windows Subsystem for Linux it says "No X11 DISPLAY variable was set,".

There a number of pure Java SQL database systems develolpers can embed into applications. In this tip we introduce two open source projects, HSQLDB and Apache Derby.