Kotlin If AND

Kotlin If with AND Operator

If statement boolean expression can contain multiple conditions joined by logical operators. In this tutorial, we will learn how to use Logical AND Operator (&&) in the boolean condition/expression of Kotlin If-statement.

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.