20145109《Java程序设计》第二周学习总结

20145109 《Java程序设计》第二周学习总结

Variable :
naming rule : Camel case
no default value
e.g : ageOfStudent
final :
unchangeable
e.g : final double PI = 3.141596;
number :
the default type of decimal is 'double'
escape symbol '' :
e.g : char symbol = ''';
\uxxxx : print xxxx(16) in Unicode
\xxx : print xxx(8) in Unicode
\b : back in one character
\f : next page
\n : next line
\r : cursor move to the top of line