## Operators in Java

**By:** aathishankaran **Viewed:** 153135 times Printer Friendly Format

Operators in Java

Java provides a rich operator environment. Most of its operators can be divided into the following four groups: arithmetic, bit wise, relational, and logical. Java also defines some additional operators that handle certain special situations. This article will describes java’s operators except for the type comparison operator instance of.

Arithmetic operators

Arithmetic operators are used in mathematical expressions in the same way that they are used in algebra. The following table lists the arithmetic operators.

Operator Result

+ Addition

- Subtraction (also unary minus)

* Multiplication

/ Division

% Modulus

++ Increment

+= Addition assignment

-= Subtraction assignment

*= Multiplication assignment

/= Division assignment

%= Modulus assignment

-- Decrement

The operator of the arithmetic operators must be of a numeric type. You cannot use them on boolean types, but you can use them on char types, since the char type in java is, essentially, a subset of int.

The Basic Arithmetic Operators

The basic arithmetic operations addition, subtraction, multiplication, and division all behave, as you would expect for all numeric types. The minus operator also has a unary from which negates its single operand. Remember that when the division operator is applied to an integer type, there will be no fractional component attached to the result.

The following simple example program demonstrates the arithmetic operators, it also illustrates the difference between floating-point division and integer division.

//Demonstrate
the basic arithmetic operators.

class
BasicMath {

public static void main ( String args[] ) {

// arithmetic using integers

System.out.println(“Integer Arithmetic”);

int a = 1+1;

int b = a*3;

int c = b/4;

int d = c-a;

int e= -d;

System.out.println(“a = ” + a);

System.out.println(“b = ” + b);

System.out.println(“c = ” + c);

System.out.println(“d = ” + d);

System.out.println(“e = ” + e);

// arithmetic using doubles

System.out.println(“floating point Arithmetic”);

double da = 1+1;

double db = da*3;

double dc = db/4;

double dd = dc-a;

double de= -dd;

System.out.println(“da = ” + da);

System.out.println(“db = ” + db);

System.out.println(“dc = ” + dc);

System.out.println(“dd = ” + dd);

System.out.println(“de = ” + de);

}

}

When you run this program, you will see the following output:

Integer
Arithmetic

a = 2

b = 6

c = 1

d = -1;

e = 1;

Floating
point arithmetic

da = 2.0

db = 6.0

dc = 1.5

dd =
-0.5;

de = 0.5;

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