How to get current user name using Java

Java example to get current user name on windows OS.

Many time we need name of user by which our java program is running. To do this we can simply access Java environment variables or we can use class to do this. Here is example for getting current user(by which our java code is running).

Example 1, using java environment valiable



Example 2, using NTSystem nsys = new;

Example 2 will work only on windows systems.