Java operator : Using operators in java

In any programming language, real life scenario involves the manipulation of variables. Operators specify the evaluation to be carried on data objects. Operators combine simple value or expression into complex new expression that return values.

Type of java operator,

1. Arithmetic operators
2. Relational operators
3. Logical operators
4. Bitwise operators
5. instanceOf operator
6. Conditional operators

Arithmetic Operators

Arithmetic operators are used in mathematical expressions. Operands of arithmetic operators must be of numeric type. While using arithmetic operators, Boolean operands cannot be used. Character operands are allowed.

Relational Operators

Relational operators are used to test the relation between to operands. Expressions using relation operators always return Boolean values, i.e. either true or false.

Logical Operators

Logical operator’s works with Boolean operands.

Assignment operator

Assignment operator is used to assign values. The assignment operator is a single equal sign “-” and assigns a value to a variable. Assigning values to more than one variable can be done. It can be also said as the chain of assignments.

Bitwise Operators

Bitwise operators are used to manipulate individual bits in an integral primitive data type. Bitwise operators act upon the individual bits of their operands. Bitwise operators perform Boolean algebra on the corresponding bits in the two arguments to produce result. When bitwise operators are used with numbers the “&” operation performs the bitwise “AND” function, and the “|” operations performs the bitwise “OR” function on each pair of bits.

instanceOf operator

The “instanceOf” operator is used for object reference variables only. It can also be used to check weather an object is of a particular type.

Example:

Scanner user_input=new Scanner(System.in);

Boolean value=input_user instanceOf Scanner;

System.out.println(value);

Conditional Operator

Conditional operator is used to evaluate Boolean expressions. The ternary operator is a conditional operator. Conditional operator can replace certain type of if-else statements.

Syntax:

expression1 ? expression2 : expression3

The “expression1” can be any expression that evaluates to a Boolean value. If it returns a true value “expression2” is evaluated and if it returns a false value “expression3” is evaluated. We can even nest the conditional operators.