Delete comments in java source code. How many kinds of comments in java?

1. one line comments using slash star
2. half line comments follows code using slash star
3. multi-line comments using slash star
4. multi-line comments start with half line comments using slash star
5. one line comments using double slash
6. half line comments after code using double slash

Notes: any slash and star in qutations marks can't be removed if there are in output line. such as : System.out.print("aaaaaaaaaaaaaaa//bbbbbb/**///");

modify test.