Java Operators
First, arithmetic operators
++ and - can appear in both the left operand, may also appear on the right side, but with different results
1, ++ on the left, a first increment 1 and then assigned to b
int a=3
int b=++a
2, ++ on the right, the first assignment to b, a further increment 1
nt a=3
int b=a++
Note: The increment and decrement operators operating variables can only be used, or can not be directly used to operate a constant value.
Second, the assignment operator
Third, the comparison operator
Note:
1,>, <,> =, <= the number of right and left support only operation is a numeric type
2, ==,! = Operands on both sides may be either a numeric type, or a reference type
Fourth, the logical operators
V. conditional operator
Syntax: boolean expression? Expression 1: Expression 2
Operation: If the Boolean expression is true, the value of Expression 1 is returned, otherwise the return value of the expression 2
Column such as:
Score = 68 int;
String = Mark Score> = 60 "failed": "fail";?
( "How to test scores:" + mark) System.out.println;
Final output "fail"
Six, operator precedence
