9) Operators

Java Operators

Operator is a special symbol that tells the compiler to perform specific mathematical or logical Operation. We can divide all the Java operators into the following groups:

• Arithmetic Operators

• Relational Operators

• Logical Operators

• Assignment Operators

• Ternary or Conditional Operators

Arithmetic Operators

Given table shows the entire Arithmetic operator supported by Java Language. Let's suppose variable A hold 8 and B hold 3.

Operator	Example (int A=8, B=3)	Result
+	A+B	11
-	A-B	5
*	A*B	24
/	A/B	2
%	A%8	0

Relational Operators

Which can be used to check the Condition, it always returns true or false. Let’s suppose variable A hold 8 and B hold 3.

Operators	Example (int A=8, B=3)	Result
<	A<B	False
<=	A<=B	True
>	A>B	True
>=	A>=B	False
==	A==B	False
!=	A!=B	True

Logical Operator

Which can be used to combine more than one Condition? Suppose you want to combined two conditions A<B and B>C, then you need to use Logical Operator like (A<B) && (B>C). Here && is Logical Operator.

Operator	Example (int A=8, B=3, C=-10)	Result
&&	(A<B) &&(B>C)	False
||	(B!=-C) || (A==B)	True
!	!(B<=-A)	True

Truth table of Logical Operator

C1	C2	C1 && C2	C1|| C2	!C1	!C2
T	T	T	T	F	F
T	F	F	T	F	T
F	T	F	T	T	F
F	F	F	F	T	T

Assignment operators

This can be used to assign a value to a variable. Lets suppose variable A hold 8 and B hold 3.

Operator	Example (int A=8, B=3)	Result
+=	A+=B or A=A+B	11
-=	A-=3 or A=A-3	5
*=	A*=7 or A=A*7	56
/=	A/=B or A=A/B	2
%=	A%=5 or A=A%5	3
=	A=B	Value of B will be assigned to A

Ternary operator

If any operator is used on three operands or variable is known as ternary operator. It can be represented with " ?: "

Syntax

result = testCondition ? value1 : value2

this statement can be read as “If testCondition is true, assign the value of value1 to result; otherwise, assign the value of value2 to result.

Example:

 int a=6,b=7;
 int minVal = (a < b) ? a : b;
 System.out.println(minVal);

Output: 6