Kotlin vs Java: Head to Head Comparison

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Kotlin vs Java: Head to Head Comparison

Feature	Java	Kotlin
Checked Exceptions	Available	Unavailable
Code Conciseness	Can’t be labeled as concise	Better than Java
Coroutines	Unavailable	Available
Data Classes	Required to write a lot of boilerplate code	Requires adding only the data keyword in the class definition
Extension Functions	Unavailable	Available
Higher-Order Functions and Lambdas	Higher-order functions are implemented using Callables. Lambdas expressions are introduced in the Java 8	Comes as one of the prebuilt features
Implicit Widening Conversions	Available	Unavailable
Inline Functions	Unavailable	Available
Native Support for Delegation	Unavailable	Available
Non-private Fields	Available	Unavailable
NullPointerExceptions	Available	Unavailable
Primitive Types	Variables of a primitive type aren’t objects	Variables of a primitive type are objects
Smart Casts	Unavailable	Available
Static Members	Available	Unavailable
Support for Constructors	Can’t have secondary constructors. Although, can have multiple constructors (constructor overloading)	Can have one or more secondary constructors
Ternary Operator	Available	Unavailable
Wildcard Types	Available	Unavailable, has declaration-site variance and type projects as an alternative