I just want to perfect my java...how can i do this..

Answer 1

1. Make lot of programs by yourself.
2. Study codes written by other people and try to make them by your own.
3. Try to understand the errors you may face during compiling and executing.
4. Refer good books and magazines on Java.
5. Remember, more and more practice you would do, more you learn.

Answer 2

follow the course. practice. read multiple books. practice. check youtube. practice.

Basically there is no easy way to prefect or master Java. The only way is thru months of study and practice.

Answer 3

Finish the Java course, then practice and use more recourses and you'll gradually get better!

Answer 4

Study and Try.

Read http://docs.oracle.com/javase/8/ thoroughly with testing each technique by yourself, i.e. create small programs with your new knowledge.