Java enviroment not storing in strig

Hi i got a big headake..

Java Code:

System.out.println("1: No way");
                        //String userHomePath;
                        String abc = System.getenv().get("APPDATA");
                        //System.out.println(System.getenv("APPDATA"));
                        System.out.println("2:" + "abc");
                        //File file = new File("userHomePath");
                        
                        Map<String, String> env = System.getenv();
                        String envc = env.get("APPDATA");
                        System.out.println("3:" + envc);
                        
                        String env2 = System.getenv().get("APPDATA");
                        System.out.println("4:" +env2);

Gives output:































































































































































































































































































































































































































































































































1: No way































































































































































































































































































































































































































































































































2:abc































































































































































































































































































































































































































































































































3:C:\Users\xx\AppData\Roaming































































































































































































































































































































































































































































































































4:C:\Users\xx\AppData\Roaming

I dont undestand difrence betwen 2 and 4??

Was trying to get APPDATA but didin'y work correctly, after 1 hour u found but i don't understand what is going on with......