Java Wrapper Classes Interview Questions

What are Wrapper Classes? Describe the wrapper classes in Java.

Wrapper classes are classes that allow primitive types to be accessed as objects. Wrapper class is wrapper around a primitive data type.

Following table lists the primitive types and the corresponding wrapper classes:

Primitive

Wrapper

Booleanjava.lang.Boolean
Bytejava.lang.Byte
Charjava.lang.Character
doublejava.lang.Double
Floatjava.lang.Float
Intjava.lang.Integer
Longjava.lang.Long
Shortjava.lang.Short
Voidjava.lang.Void
 

Like us on Facebook