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Java Logical Operators

? Java Logical Operators

? Quick Overview

Logical operators in Java are used to combine multiple boolean expressions and return a single boolean result. They are commonly used in decision-making statements like if, while, and for.

? Key Concepts

  • They operate on boolean values (true or false)
  • Result is always a boolean value
  • Used to build complex conditions

? Syntax / Theory

  • && → Logical AND
  • || → Logical OR
  • ! → Logical NOT

? Code Example(s)

? View Code Example 
// Demonstrating logical operators in Java
public class LogicalOperators {
public static void main(String[] args) {
int a = 10;
int b = 20;

System.out.println(a < b && b > 15);
System.out.println(a > b || b > 15);
System.out.println(!(a > b));
}
}

? Live Output / Explanation

true → Both conditions are true using AND

true → One condition is true using OR

true → NOT operator reverses false to true

? Tips & Best Practices

  • Use parentheses for better readability
  • Prefer short-circuit operators (&&, ||)
  • Avoid complex conditions in a single line

? Try It Yourself

  • Check if a number lies between 1 and 100
  • Validate login using username AND password
  • Use NOT operator to reverse a condition