Question

compound assignment operator

Answer 1

Java supports 11 compound assignment operators:

+=   assigns the result of the addition. -=   assigns the result of the subtraction. *=   assigns the result of the multiplication /=   assigns the result of the division. %=   assigns the remainder of the division. &=   assigns the result of the logical AND. |=   assigns the result of the logical OR. ^=   assigns the result of the logical XOR. <<=  assigns the result of the signed left bit shift. >>=  assigns the result of the signed right bit shift. >>>= assigns the result of the unsigned right bit shift.

Examples:

To assign the result of an addition operation to a variable using standard syntax:

//add 2 to the value of number number = number + 2;

But use a compound-assignment operator to effect the same outcome with simpler syntax:

//add 2 to the value of number number += 2;

Answer 2

Compound-assignment operators provide a shorter syntax for assigning the result of an arithmetic or bitwise operator. They perform the operation on the two operands before assigning the result to the first operand
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