In this tutorial, you shall learn how to use AND logical operator in the condition of If-statement in Kotlin, with examples.

Kotlin If with AND Operator

The condition in the If-statement must be a boolean expression or anything that can evaluate to a Boolean value. And this boolean expression can be a compound condition that contains multiple conditions joined by logical operators.

The following is a simple scenario where two simple conditions are joined with Logical AND Operator to form a compound boolean condition.

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if (condition1 && condition2) {
    //code
}

The truth table for the result of this compound condition or expression is

condition1condition2condition1 && condition2
truetruetrue
truefalsefalse
falsetruefalse
falsefalsefalse

Example

In the following Kotlin program, we have an integer value in a. We shall check if this integer is greater than 5 and if this number even.

The expression to check if a is greater than 5, is a > 5.

The expression to check if a is even is a%2 == 0.

We shall join these two simple boolean conditions using AND operator && to form a compound boolean condition.

Main.kt

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fun main(args: Array<String>) {
    val a = 10
    if ( (a > 5) && (a%2 == 0) ) {
        print("$a is even and greater than 5.")
    }
}

Output

10 is even and greater than 5.

Conclusion

In this Kotlin Tutorial, we learned how to use Logical AND Operator in If-statement’s boolean condition, with the help of example programs.