Which is a valid identifier?
A. break
B. default
C. _object
D. a-class
Whichis the numerical range of a byte?
A. 0 ... 255
B. 0 ... 65535
C. -128 ... 127
D. -32768 ... 32767
学习Java应该从 版本入手。
A. Java ME
B. Java SE
C. Java EE
Which two are valid declarations of a boolean? (Choose two.)
A. boolean b = 0;
B. boolean b = true;
C. boolean b = "true";
D. boolean b = 'true';
E. booleanb = (3 >= 0);