Get login username in java
in Unix:
new com.sun.security.auth.module.UnixSystem().getUsername()in Windows:
new com.sun.security.auth.module.NTSystem().getName()in Solaris:
new com.sun.security.auth.module.SolarisSystem().getUsername()
inspired by @newacct's answer, a code that can be compiled in any platform:
String osName = System.getProperty( "os.name" ).toLowerCase();String className = null;String methodName = "getUsername";if( osName.contains( "windows" ) ){ className = "com.sun.security.auth.module.NTSystem"; methodName = "getName";}else if( osName.contains( "linux" ) ){ className = "com.sun.security.auth.module.UnixSystem";}else if( osName.contains( "solaris" ) || osName.contains( "sunos" ) ){ className = "com.sun.security.auth.module.SolarisSystem";}if( className != null ){ Class<?> c = Class.forName( className ); Method method = c.getDeclaredMethod( methodName ); Object o = c.newInstance(); System.out.println( method.invoke( o ) );}