hi there,
yeah, the Unicode characters can appear in the source code.
like:
ch\u0061r a = 'a'; => char a = 'a';
char \u0062 = 'b'; => char b = 'b';
char c = '\u0063'; => char c = 'c';
you can also check Velmurugan Periasamy's webside.. check the FAQ or mocklist from javaranch's website, also back to p.24~25 from Khalid Table 2.7.
hope this help. good day.
martha