6/19/2023 0 Comments Kotlin null default valueIn kotlin, we are using an assertion operator instead of the optional get function, which was used in java. In kotlin, an optional type will compare and translate into the nullable types in a kotlin in kotlin, we use nullable types.Ĭode: val isOfLegalAge: Boolean = school?.student?.age ?: 0 > 10ĥ. Basically, kotlin is supporting the nullable types it will make nullable types optional types as well it will provide all API. Kotlin will natively support the nullable types at the time of making optional types as well as all the APIs it will provide. In kotlin, the type system distinguishes between references that hold null values. The possible cause of kotlin NPE is that it is an explicit call for throwing the null pointer exception. We are using an optional keyword to tackle this situation. The most common pitfall in many programming languages is that accessing members of null reference results in the exception of a null reference. The new class is introduced in the java optional type, allowing our variables to return the empty values. This type is basically used at the time of performing API calls which were used to return null values. Kotlin optional is used to handle the empty or null values in our program gracefully.
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