Java Basics Essay 2

Various operators: Arithmetic operators:: +,-,*,/,%,++,--

+ +: self-increment

--: self-reduction

When used alone, + + or--whether placed in front of the variable or behind it, the result is the same.

When participating in the operation:

If + + or--at the back of the variable, take the variable to participate in the operation, after the variable to do + + or--

If + + or--at the front of the variable, the first variable to do the + + or--, take the variable to participate in the operation

Basic assignment Operator: = Extended assignment Operator: +=,-=,*=,/=,%=

a+=10; equivalent to a = (data type of a) (A + 10);

Relational operators: ==,!=,>,>=,<,<= (the result of a relational operator isBoolean, which is either true or false ) Logical operator: a:&,|,^,! B: &&,| |

& Logic with: False if False

| Logical OR: TRUE if

^ Logical XOR: Same as false, different to true

The logical non: false is true, False if not true

What is the difference between a:&& and &?

A: The end result is the same.

The b:&& has a short circuit effect. The left side is false and the right side is not executed.

& whether the left is false or true, the right side will execute

What is the difference between b:| | and |?

A: The end result is the same

b:| | has a short circuit effect. True on the left, not on the right

| Whether the left is false or true, the right side will execute

Ternary operator: (relational expression)? Expression 1: Expression 2;

If the condition is true, the result of the operation is an expression of 1;

If the condition is false, the result of the operation is an expression of 2;

Example: int x=1,y=2,z;

z = (x>y)? x:y; Z is the largest number in X, y

Java Basics Essay 2