Logical Operators in Java

Beginner ⏱ 8 min read Updated: Jun 2026

Logical operators in Java are used to combine multiple conditions and perform logical operations. They are mainly used with boolean values and return a result as either true or false.

Logical operators are commonly used in decision-making statements like if, if-else, and loops to create complex conditions in Java programs.

What are Logical Operators in Java?

Logical operators are special symbols that allow programmers to combine multiple relational expressions. They help in checking more than one condition at the same time.

For example, if you want to check whether a user is above 18 years old and has a valid ID, you can use the logical AND operator (&&).

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Key Point: Logical operators work with boolean expressions and always return a boolean value: true or false.

Syntax of Logical Operators in Java

The basic syntax of logical operators is:

Syntax

condition1 operator condition2;

Here, the operator combines two or more conditions and produces a boolean result.

Example of Logical Operator in Java

Example

public class Main {
    public static void main(String[] args) {
        int age =  20;
        boolean hasId = true;
        System.out.println(age >= 18&& hasId); 
    }
}

Output

true

Types of Logical Operators in Java

Java provides three main logical operators used for combining and modifying conditions.

Logical AND Operator (&&)
Logical OR Operator (||)
Logical NOT Operator (!)

Java Logical Operators Table

Operator	Name	Description
&&	Logical AND	Returns true when all conditions are true
\|\|	Logical OR	Returns true when at least one condition is true
!	Logical NOT	Reverses the boolean result

Logical AND Operator (&&) in Java

The logical AND operator (&&) is used to combine two or more conditions. It returns true only when all conditions are true. If any one condition is false, the result will be false.

The AND operator is commonly used when multiple conditions must be satisfied at the same time.

Example

int age =  22;
boolean license =  true;
System.out.println(age >= 18 && license);

Output

true

Logical OR Operator (||) in Java

The logical OR operator (||) is used when at least one condition needs to be true. It returns true if any one of the conditions is true.

The result will be false only when all conditions are false.

Example

int marks =  35;
boolean extraClass =  true;
System.out.println(marks >= 40 || extraClass);

Output

true

Logical NOT Operator (!) in Java

The logical NOT operator (!) is used to reverse the result of a boolean expression. If the condition is true, NOT changes it to false, and if it is false, NOT changes it to true.

Example

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

Output

false

Logical Operators Truth Table in Java

AND Operator (&&) Truth Table

Condition 1	Condition 2	Result
true	true	true
true	false	false
false	true	false
false	false	false

OR Operator (||) Truth Table

Condition 1	Condition 2	Result
true	true	true
true	false	true
false	true	true
false	false	false

NOT Operator (!) Truth Table

Condition	Result
true	false
false	true

Using Logical Operators with if Statement in Java

Logical operators are mostly used with conditional statements to execute code based on multiple conditions.

Example

int age =  25;
boolean verified = true;
if  (age >= 18 && verified) { 
    System.out.println("Access Granted");
}

Output

Access Granted

Advantages of Logical Operators in Java


                    Multiple Conditions

Logical operators allow developers to combine multiple conditions in a single expression.


                    Decision Making

They help create powerful decision-making logic using if and conditional statements.


                    Better Control

Logical operators provide better control over program execution based on conditions.


                    Easy Readability

They make complex conditions shorter and easier to understand.

Common Mistakes While Using Logical Operators

Using single & instead of logical AND operator &&.
Using single | instead of logical OR operator ||.
Forgetting that logical operators work with boolean expressions.
Writing complex conditions without proper brackets.

Difference Between Logical AND (&&) and Bitwise AND (&)

Logical AND (&&)	Bitwise AND (&)
Used with boolean conditions.	Used for bit-level operations.
Stops checking when result is known (short-circuit).	Evaluates all operands.
Example: a > 10 && b < 20	Example: a & b

Example of Multiple Logical Operators in Java

Example

int age =  21;
boolean student =  true;
boolean discount =  false;
System.out.println(age >= 18 && student || discount);

Output

true

Summary

Logical operators in Java are used to combine multiple conditions and perform logical operations. They return boolean values such as true or false.

Java provides three main logical operators: AND (&&), OR (||), and NOT (!). These operators are widely used in conditional statements and loops.

Understanding logical operators is important for creating efficient decision making logic in Java applications.

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