Operators in Java

operators in java

Operators perform operations by taking one or more value, to give another value. These operations are performed on variables and values. Operators in Java are discussed here. For example:

a + b

Here are the operators in Java:

Java Arithmetic Operators

Arithmetic operators perform arithmetical operations, such as addition, subtraction, division, multiplication etc.

Arithmetic Name   Operator Name            Example

+                            Addition                      a + b

-                         Subtraction                        a – b

*                          Multiplication                     a * b

/                           Division                      a / b

%                          Modulus                             a % b

**                        Exponentiation                     a ** b

Here’s an example,

class StudyDemo1 { public static void main(String []args) { int a, b, c; a = 50; b = 100; c = 150; System.out.println("Studyopedia Java Tutorial"); System.out.println("Arithmetic Operators:\n"); System.out.println("Addition Arithmetic Operator"); System.out.println("Value of (a + b) is "+(a+b)); System.out.println("\nSubtract Arithmetic Operator"); System.out.println("Value of (b - a) is "+(b-a)); System.out.println("\nDivision Arithmetic operator"); System.out.println("Value of (c / a) is "+(c/a)); System.out.println("\nMultiplication Arithmetic operator"); System.out.println("Value of (a * b) is "+(a*b)); System.out.println("\nModulus Arithmetic operator"); System.out.println("Value of (c % b) is "+(c%b)); } }

Here’s the output,

  

Java Assignment Operator

Use the Assignment Operator when you need to assign a value to a variable. Assignment means assigning the value of right operand(s) to the left operand.

Assignment Operator      Name                   Example

=                                    Assignment                 a = b

Java Arithmetic Assignment Operator

Use the Arithmetic Assignment Operator when you need to perform arithmetic operations such as add, subtract, divide, multiple, etc and at the same time assign a value

Arithmetic Assignment Operator                Name                                        Example

+=                                          Add AND assignment                        a += b is same as a = a + b

-=                                         Subtract AND assignment                  a -= b is same as a = a – b

*=                                          Multiply AND assignment                    a *= b is same as a = a * b

/=                                          Divide AND assignment                  a /= b is same as a = a / b

%=                                          Modulus AND assignment                  a %= b is same as a = a % b


Here’s an example,

class StudyDemo1 { public static void main(String []args) { int a, b, c, d, e; a = 5; b = 10; c = 15; d = 20; e = 30; System.out.println("Studyopedia Java Tutorial"); System.out.println("Arithmetic Assignment Operators:\n"); a += 5; System.out.println("Add AND assignment operator"); System.out.println("Value of a: = "+a); b -= 5; System.out.println("\nSubtract AND assignment operator"); System.out.println("Value of b: = "+b); c *= 5; System.out.println("\nMultiple AND assignment operator"); System.out.println("Value of c: = "+c); d /= 10; System.out.println("\nDivide AND assignment operator"); System.out.println("Value of d: = "+d); e %= 9; System.out.println("\nModulus AND assignment operator"); System.out.println("Value of e: = "+e); } }

Here’s the output,

Java Relational/ Comparison operators

Compare two values with Java relational operators, which is also known as Comparison Operators.

Java Relational Operator                              Name                                  Example

= ='                                                      Equal                                         a == b isn’t true

!=                                                     Not Equal                                 a != b returns true

>                                                      Greater Than                        a > b isn’t true

<                                                       Less Than                                 a < b is true

>=                                                       Greater than or equal to         a >= b isn’t true

<=                                                      Less than or equal to                 a <= b is true

Here’s an example,

Here’s an example,class StudyDemo1 { public static void main(String []args) { int a, b, c, d; a = 5; b = 10; c = 15; System.out.println("Studyopedia Java Tutorial"); System.out.println("\nRelational Operators:"); System.out.println("Value of (a == b) is " + (a == b) ); System.out.println("Value of (a != b) is " + (a != b) ); System.out.println("\nValue of (b > c) is " + (b > c) ); System.out.println("Value of (c < a) is " + (c < a) ); System.out.println("\nValue of (c >= b) is " + (c >= b) ); System.out.println("Value of (b <= c) is " + (b <= c) ); } }

Here’s the output,

Java Logical operators

Logical operators combine conditional statements. Considering Boolean variables a and b,  

Java Logical Operators          Name                                   Example

&&                       Logical AND operator                      a && b is true if a and b are both true

||                       Logical OR Operator                            a || b is true if either a or b is true

^                       Logical XOR operator                      a xor b is true if either a or b is true (not both)

!                       Logical NOT Operator                      !a is true if a is not true

Here’s the output,

class StudyDemo1 { public static void main(String []args) { boolean a, b, c, d; a = true; b = false; c = true; d = false; System.out.println("Studyopedia Java Tutorial"); System.out.println("\nLogical Operators:"); System.out.println("Value of (a && b) = " + (a&&b)); System.out.println("Value of (b || c) = " + (b||c) ); System.out.println("Value of !(a && d) = " + !(a && d)); System.out.println("Value of (a ^ d) = " + (a ^ d)); } }

Here’s the output,

Java Unary operators

Unary operators include pre as well as post increment and decrement operators,

Here’s the example,

class StudyDemo1 { public static void main(String []args) { int a, b; a = 5; System.out.println("Studyopedia Java Tutorial"); System.out.println("Unary Operators:"); System.out.println("\nUnary Increment Operators"); System.out.println(a++); System.out.println(++a); System.out.println("\nUnary Decrement Operators\n"); System.out.println(a--); System.out.println(--a); } }

Here’s the output,

Java Ternary/ Conditional Operator

Conditional operator evaluates Boolean expressions, with has three operands. It is also known as the ternary operator. The role is to assign a value to a variable, from two given set options.

Here’s how to use it,

variable = (expression) ? value1 ( if true) : value2 (if false)

Here’s an example,

class StudyDemo1 { public static void main(String []args) { int a, b; a = 5; System.out.println("Studyopedia Java Tutorial"); System.out.println("Conditional Operator"); b = (a > 2) ? 100: 50; System.out.println( " b = " + b ); } }

Here’s the output,

Bitwise Operator

These operators only work with the following data types,

• byte
• short
• int
• long
• char

Bitwise operators are discussed in the next lesson.