Saturday, 23 June 2012

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

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