Basic Operators in Java with Example

The Java operators is an essential thing in Java programming. They included in every logical, algorithm, methods, class, etc of the Java Programming. Java Operators are special symbol or character that use by specific operation between 1-3 operands then return a result. Here’s an example of one operand.

int result = 100++;

Two operands.

int result = 100 + 200;

Three operands.

int result = 100 + 200 * 2;

Above example describe that “=”, “+” and “*” symbol is an operator and the numbers (100, 200, 300) are operands.

There are a group of operators that classify into the following groups:

  • Java Assignment Operators
  • Java Arithmetic Operators
  • Java Unary Operators
  • Java Equality and Relational Operators
  • Java Conditional Operators
  • Java Bitwise and Bit Shift Operators

We will learn by practice all of those Java operators groups using Netbeans.

Assignment Operators

Java assignment operators assign the value on its right and the operand on its left.

int age = 100;

Above example describe that “int age” is the operand, “100” is the value, and “=” is the assignment operator. There are more than one Assignment operators, you can learn all of them the examples below.

Open the Netbeans application then create a new Java application project and give it the name AssignmentOperators. The newly created Netbeans Java application project will open the AssignmentOperators file automatically which it’s the main and runnable Java application.

Next, we will put all Assignment Operators examples inside the main method.

Java Simple Assignment Operator “=”

Simple and most used operators that assign a value on its right and operand on its left. It only uses one character or symbol “=”.

int a = 100;
System.out.println(a);
 
Output:
100

Java Add and Assignment Operator “+=”

The operand on its left increase or add by the value on its right then save the result on the operand. It uses two characters or symbols “+=”.

int b = 5;
b += 5;
System.out.println(b);
 
Output:
10

Java Subtract and Assignment Operator “-=”

The operand on its left is decreased or subtract by the value on its right then save the result on the operand. It uses two characters or symbols “-=”.

int c = 100;
c -= 50;
System.out.println(c);
 
Output:
50

Java Multiply and Assignment Operator “*=”

The operand on its left is multiplied by the value on its right then save the result on the operand. It uses two characters or symbols “*=”.

int d = 8;
d *= 50;
System.out.println(d);
 
Output:
400

Java Divide and Assignment Operator “/=”

The operand on its left is divided by the value on its right then save the result on the operand. It uses two characters or symbols “/=”.

int e = 200;
e /= 10;
System.out.println(e);
 
Output:
20

Java Modulus and Assignment Operator “%=”

The operand on its left is modulus by the value on its right then save the result on the operand. It uses two characters or symbols “%=”.

int f = 20;
f %= 3;
System.out.println(f);
 
Output:
2

Java Left Shift and Assignment Operator “<<=”

The operand on its left is a binary left shift by the value on its right then save the result on the operand. It uses three characters or symbols “<<=”.

int g = 10;
g <<= 2;
System.out.println(g);
 
Output:
40

How did it work? The default value of the operand is “10” or “1010” then left a shift by “2” or add two digits of “0” on the right of “1010” then result in the value “101000”. The result “101000” converted to decimal will be “40”.

Java Right Shift and Assignment Operator “>>=”

The operand on its left is a binary right shift by the value on its right then save the result on the operand. It uses three characters or symbols “>>=”.

int h = 13;
h >>= 2;
System.out.println(h);
 
Output:
3

How did it work? The default value of the operand is “13” or “1101” then right shift by “2” or remove two digits on the right then result in the value “101000”. The result “11” converted to decimal will be “3”. If the value more same or more than binary digits of its operand, the result will always “0”.

Java Bitwise AND and Assignment Operator “&=”

The operand on its left is binary AND by the value on its right then save the result on the operand. It uses two characters or symbols “&=”.

int i = 20;
i &= 30;
System.out.println(i);
 
Output:
20

How did it work? The default value of the operand is “20” or “10100”, binary AND by “30” or “11110” then result in the value “10100”. The result “10100” converted to decimal will be “20”.

Java Bitwise OR and Assignment Operator “|=”

The operand on its left is binary OR by the value on its right then save the result on the operand. It uses two characters or symbols “|=”.

int j = 25;
j &= 15;
System.out.println(j);
 
Output:
9

How did it work? The default value of the operand is “25” or “11001”, binary OR by “15” or “1111” then result in the value “1001”. The result “1001” converted to decimal will be “9”.

Java Bitwise XOR and Assignment Operator “^=”

The operand on its left is binary XOR by the value on its right then save the result on the operand. It uses two characters or symbols “^=”.

int k = 20;
k ^= 30;
System.out.println(k);
 
Output:
10

How did it work? The default value of the operand is “20” or “10100”, binary XOR by “30” or “11110” then results in the value “1010”. The result “1010” converted to decimal will be “10”.

Java Arithmetic Operators

The Arithmetic is part of Mathematics. So, Java Arithmetic operators mean use Mathematics Arithmetic operators.

Still, the Netbeans application opened then create a new Java application project and give it the name ArithmeticOperators. The newly created Netbeans Java application project will open the ArithmeticOperators file automatically which it’s the main and runnable Java application. Next, we will put all Assignment Operators examples inside the main method.

Java Addition Operator “+”

Adds two values together or left value add by right value. It uses the character “+”.

int a = 200 + 300;
System.out.println(a);
 
Output:
500<span style="color: rgba(0, 0, 0, 0.8); font-family: Roboto, sans-serif; font-size: 1.17em; background-color: rgb(255, 255, 255);">
</span>

Java Subtraction Operator “-”

Subtract the left value by the right value. It uses the character “-”.

int b = 500 - 300;
System.out.println(b);
 
Output:
200

Java Multiplication Operator “*”

Multiply two values or left value multiply by right value. It uses the character “*”.

int c = 10 * 10;
System.out.println(c);
 
Output:
100

Java Division Operator “/”

Divide two values or left value divide by right value. It uses the character “/”.

int d = 100 / 10;
System.out.println(d);
 
Output:
10

Java Modulus Operator “%”

Modulus two values or left value modulus by the right value and return the result that left from the division. It uses the character “%”.

int e = 35 % 4;
System.out.println(e);
 
Output:
3

Java Increment Operator “++”

Increase the value of the operand on the left. It uses two characters or symbols “++”.

int f = 20;
++f;
System.out.println(f);
 
Output:
21

Java Decrement Operator “–”

Decrease the value of the operand on the left. It uses two characters or symbols “–”.

int g = 20;
--g;
System.out.println(g);
 
Output:
19

Java Unary Operators

The Java Unary Operators use only on one operand that performs a various operation such as incrementing/decrementing a value by one step, negating an expression, and inverse a boolean value.

Still, the Netbeans application opened then create a new Java application project and give it the name UnaryOperators. The newly created Netbeans Java application project will open the UnaryOperators file automatically which it’s the main and runnable Java application. Next, we will put all Assignment Operators examples inside the main method.

Java Unary Plus Operator

Java unary plus operator just an indication of the positive value. It uses a character or symbol “+” before its value.

int a = +1;
System.out.println(a);
 
Output:
1

Java Unary Minus Operator

Java unary minus operator just an indication of the negative value. It uses a character or symbol “-” before its value.

int b = -1;
System.out.println(b);
 
Output:
-1

Java Unary Increment Operator

Java unary increment operator increases the operand value. It uses two characters or symbols “++” after its operand.

int c = 10;
c++;
System.out.println(c);
 
Output:
11

Java Unary Decrement Operator

Java unary decrement operator decreases the operand value. It uses two characters or symbols “–” after its operand.

int d = 10;
d--;
System.out.println(d);
 
Output:
9

Java Unary Logical Complement Operator

Java unary logical complement operator inverts the value of boolean. It uses a character or symbol “!” before its operand.

boolean status = true;
System.out.println(!status);
 
Output:
false

Java Equality and Relational Operators

Java equality and relational operators use to determine one operand is greater than, greater than or equal, equal, less than, less than or equal, not equal to another operand.

Still, the Netbeans application opened then create a new Java application project and give it the name EqualityRelationalOperators. The newly created Netbeans Java application project will open the EqualityRelationalOperators file automatically which its the main and runnable Java application. Next, we will put all Assignment Operators examples inside the main method.

Java Greater Than Operator “>”

Java greater than operator used to compare that left operand is greater than the right operand. It uses a character or symbol “>”.

int a = 20;
int b = 10;
if (a > b)
    System.out.println(true);
 
Output:
true<span style="color: rgba(0, 0, 0, 0.8); font-family: Roboto, sans-serif; font-size: 1.17em; background-color: rgb(255, 255, 255);">
</span>

Java Greater Than or Equal Operator “>=”

Java greater than or equal operator use to compare that left operand is greater than or equal right operand. It uses two characters or symbols “>=”.

int c = 20;
int d = 20;
if (c >= d)
    System.out.println(true);
 
Output:
true

Java Less Than Operator “<”

Java less than operator used to compare that left operand is less than the right operand. It uses a character or symbol “<”.

int e = 10;
int f = 20;
if (e < f)
    System.out.println(true);
 
Output:
true

Java Less Than or Equal Operator “<=”

Java less than or equal operator use to compare that left operand is less than or equal right operand. It uses two characters or symbols “<=”.

int g = 20;
int h = 20;
if (g <= h)
    System.out.println(true);
 
Output:
true

Java Equal Operator “==”

Java equal operator use to compare that left operand is equal to the right operand. It uses two characters or symbols “==”.

int i = 20;
int j = 20;
if (i == j)
    System.out.println(true);
 
Output:
true

Java Not Equal Operator “!=”

Java bot equal operator uses to compare that left operand is not equal to the right operand. It uses two characters or symbols “!=”.

int k = 20;
int l = 10;
if (k != l)
    System.out.println(true);
 
Output:
true

Java Conditional Operators

Java Conditional Operators “&&” and “||” use to join with conditional between two boolean expressions.

Still, the Netbeans application opened then create a new Java application project and give it the name ConditionalOperators. The newly created Netbeans Java application project will open the ConditionalOperators file automatically which it’s the main and runnable Java application. Next, we will put all Assignment Operators examples inside the main method.

Java Conditional-AND Operator “&&”

Java conditional-AND operator uses to join two boolean expressions which both have the non-null result. This operator uses the characters or symbols “&&”.

int a = 10;
int b = 20;
if((a == 10) && (b != 10)) {
    System.out.println(true);
}
 
Output:
true

Java Conditional-OR Operator “||”

Java conditional-OR operator uses to choose two boolean expressions which one of them has the non-null result. This operator uses the characters or symbols “||”.

int c = 10;
int d = 20;
if((c == 10) || (b == 10)) {
    System.out.println(true);
}
 
Output:
true

Java Bitwise and Bit Shift Operators

Java bitwise and bit shift operators perform a binary operation between two integer value. Bitwise operators use the characters or symbols AND “&”, OR “|”, XOR “^”, and compliment “~”. Bit shift operators use the characters or symbols left shift “<<”, right shift “>>”, and zero-fill right shift “>>>”.

Still, the Netbeans application opened then create a new Java application project and give it the name BitwiseAndBitshiftOperators. The newly created Netbeans Java application project will open the BitwiseAndBitshiftOperators file automatically which it’s the main and runnable Java application. Next, we will put all Assignment Operators examples inside the main method.

Java Bitwise AND Operator “&”

Java bitwise AND operator perform a binary operation between two integer value with logical AND. It uses a character or symbol “&”.

int a = 13; // 00001101
int b = 12; // 00001100
int c = a & b; // 00001101 & 00001100 = 00001100
System.out.println(c);
 
Output:
12

Java Bitwise OR Operator “|”

Java bitwise OR operator perform a binary operation between two integer value with logical OR. It uses a character or symbol “|”.

int d = 13; // 00001101
int e = 12; // 00001100
int f = d | e; // 00001101 | 00001100 = 00001101
System.out.println(f);
 
Output:
13

Java Bitwise XOR Operator “^”

Java bitwise XOR operator performs a binary operation between two integer value with logical XOR. It uses a character or symbol “^”.

int g = 13; // 00001101
int h = 12; // 00001100
int i = g ^ h; // 00001101 ^ 00001100 = 00000001
System.out.println(i);
 
Output:
1

Java Bit Left Shift Operator “<<”

Java bit left shift operator to perform a binary operation between two integer value by left shift the left value by the amount of the right value. It uses a character or symbol “<<”.

int j = 13; // 00001101
int k = 12;
int l = g << h; // Add 12 digits 0 of 00001101 to the right = 00001101000000000000
System.out.println(l);
 
Output:
53248

Java Bit Right Shift Operator “>>”

Java bit right shift operator perform a binary operation between two integer value by removing left value by the amount of right value. It uses a character or symbol “>>”.

int m = 8; // 00001000
int n = 2;
int o = m >> n; // Remove 2 digits of 00001000 to the left
System.out.println(o);

Output:
2

Bit Zero Fill Right Shift Operator “>>>”

Java bit zero-fill right shift operator perform a binary operation between two integer value by left shift the left value by the amount of the right value depends on sign extension. It uses a character or symbol “>>>”.

int q = 8; // 1000
int r = 2;
int s = q >>> r; // Remove 2 digits of 00001000 to the left
System.out.println(s);

Output:
2

That it’s, Java Tutorial: Basic Operators Examples. You can find the example source code on our GitHub.

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