Fixup code style according to the definition of #Mnemonic-10

Only format code style without introducing any code change.

Rules for Java code:
1) Java code conventions
2) 2-space indentation
3) remove all TAB
4) LF newline
5) encode UTF-8
6) Add Apache License to code file
7) Maximum line width is 120

Rules for C/C++ code:
1) customized K&R
2) 2-space indentation
3) remove all TAB
4) LF newline
5) encode UTF-8
6) Add Apache License to code file
7) Maximum line width is 120