question: public static final String mangleChar ( char ch ) { char [ ] result = new char [ 5 ] ; result [ 0 ] = '_' ; result [ 1 ] = Character . forDigit ( ( ch > > 12 ) & 0xf , 16 ) ; result [ 2 ] = Character . forDigit ( ( ch > > 8 ) & 0xf , 16 ) ; result [ 3 ] = Character . forDigit ( ( ch > > 4 ) & 0xf , 16 ) ; result [ 4 ] = Character . forDigit ( ch & 0xf , 16 ) ; return new String ( result ) ; }
target:  Mangle the specified character to create a legal Java class name.