# Basic Java Operators

These are the types of operators in java:

**Arithmetic Java operators**: These are applied to perform arithmetical calculations like addition, subtraction, multiplication, division, modulus (Returns the remainder).

**Mathematical expression:**Â abc

**Java expression**:Â Â Â Â Â Â Â Â a*b*c

Unary increment and decrement operators:

These operators increase or decrease the value of an operand by 1, respectively.

**Prefix**: When the increment or decrement operator is applied before the operand we call it prefix operator. In this case, we change the value of the variable before the operation.

**Example:**

- intÂ x=5;

x=++x; /*x increases to 6 */

So,the final value of x is 6.

- int x=5;

x=–x;

In this case the value of x becomes 4.

**Postfix**: When the increment or decrement operator is applied after the operand we call it prefix operator. In this case, we change the value of the variable after the operation.

**Example:**

- int x=5;

x= x++ *4;

In this case x remains 5 before multiplication.So, we get 20 stored in x.

2.int x=5;

x=x– *5;

In this case, x remains five(5) before multiplication. So, the final value of x is 25.

**Relational Java operators**: As the name suggests, these operators show a relationship among the operands. They result in either True or False.

1.Less than (<) : Example: 3<7 Results in True

2.Greater than(>):Example: 3>7Â Â Results in False

3.Greater than or equal to(>=):Example:6>=6Â Results in True

4.Less than or equal to(<=): Example: 7<=12 Results in True

5.Equal to(==):Example: 7==7 Results in True

6.Not equal to(!=):Example: 7!=7 Results in False

3.**Logical Operators:** Java uses AND(&&),OR(||) or NOT(!).

Logical AND: It results in true if both expressions are valid else false.

**Example:Â **

6>8 && 4!=5

This will result in false because the first condition is false.

Logical OR: It results in true if either condition is true.

**Example:**

6>8 || 4!=5

This will result in true because the first condition is true.

Logical NOT: It will simply revert the outcome of the expression.

**Example:**

!(10==11)

This will result in true.

**4.Bitwise operators**: These perform operations on bit level of operands. These can be applied to byte, short, int, long and char.

Bitwise AND(&): It will give high(1)if both operands are high else low(0).

**Example of Java Operators using Bitwise Operators:**

1&0Â Â results in 0.

Bitwise OR(|): It will give high if either operand is high.

**Eg.**

1|0Â Â results in 1.

Bitwise complement(~): It will give the balance.

Bitwise XOR(^): It results in high if we have a different value of operands and lows if we have the same value of operands.

**Eg.**

1^0 results in 1.

0^0 results in 0.

Left shift(<<):

Example:int x=3;

x<<2;

Now the binary of 3 is 11.

We need to shift it left by 2 bits.

So, the final value becomes 1100, whose decimal equivalent is 12.

Right shift:

**Example**:

int x=12;

x>>2;

Now the binary of 12 is 1100.

We need to shift it right by 2 bits.

So, the final value becomes 11, whose decimal equivalent is 3.

Zero fill right shift (<<<):

**Example:**

int x=14;

x<<<2;

Now the binary of 14 is 1110

Shift the value right by two bits and fill the shifted values with 0. So, the value comes out to

be 3.

5.**Assignment operators:**

=Â Â It assigns the value like a=10;

+=Â Example: int a=1;a+=4 /*a=a+4*/;this results in change in value of a to 5

-=Â Example: int a=4;a-=1;this results in change in value of a to 3.

*=Â Example:int a=2;a*=3;this results in change in value of a to 6.

/=Â Example: int a=4;a/=1;this results in change in value of a to 4.

%=Â Example:int a=8;a%=3;this results in change in value of a to 2.

<<=Â a<<=2 is same as a=a<<2

>>=Â a>>=2 is same as a=a>>2

&=Â Â a&=3is same as a=a&2

**6.Miscellaneous**

Ternary operator(Conditional Assignment)

They deal with three operands.

Syntax:

Variable=(test expression)?value if true:value if false.

**Eg.**

int a=12;b=13;

int c=(a==b)?12:13;

Since the expression is false so c will store value 13.

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