Logical Operators
As with comparison operators , you can also test for true or false values with logical operators.
Logical operators are used to determine the logic between variables or values, by combining multiple conditions::
| Operator | Name | Description | Example |
|---|---|---|---|
| && | Logical and | Returns true if both statements are true | x < 5 && x < 10 |
| Logical or | Returns true if one of the statements is true | x < 5 | x < 4 |
| ! | Logical not | Reverse the result, returns false if the result is true | !(x < 5 && x < 10) |
Real-Life Example: Login Check
The example below shows how logical operators can be used in a real situation, e.g. when checking login status and access rights:
Example
boolean isLoggedIn = true;
boolean isAdmin = false;
System.out.println("Regular user: " + (isLoggedIn && !isAdmin));
System.out.println("Has access: " + (isLoggedIn || isAdmin));
System.out.println("Not logged in: " + (!isLoggedIn));Logical operators often become easier to understand once you start using them inside if statements, which you will learn about in the upcoming chapters.