Kotlin If AND

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.

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

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

condition1	condition2	condition1 && condition2
true	true	true
true	false	false
false	true	false
false	false	false

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

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.