Interested to Buy Any Domain ? << Click Here >> for more details...
use of wrapper classes?
- 3 Answers
- 6735 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Collection accepts only object not primitive data-type And
server also works on only Objects.
So By help of wrapper class we can convert primitive
data-type to Object.
| Is This Answer Correct ? | 18 Yes | 0 No |
Answer / vino
wrappper class uses for primitive datatype act as object.
ex:int-Integer
| Is This Answer Correct ? | 0 Yes | 0 No |
Wrapper classes are used to wrap primitive types (eg: int,
double, etc) in Objects which can be placed into Vectors,
and many, many other uses.
Following table lists the primitive types and the
corresponding wrapper classes:
Primitive Wrapper
Boolean java.lang.Boolean
Byte java.lang.Byte
Char java.lang.Character
double java.lang.Double
Float java.lang.Float
Int java.lang.Integer
Long java.lang.Long
Short java.lang.Short
Void java.lang.Void
| Is This Answer Correct ? | 1 Yes | 3 No |
What is unicode used for?
What class allows you to read objects directly from a stream?
Give an example of use of pointers in java class.
What is the difference between jfc & wfc?
What is ++ a in java?
What is constructor and virtual function? Can we call a virtual function in a constructor?
What is the do while loop syntax?
We can write any Java Logics in our JSP. Then why we are using servlets(Controller Layer) to interact with the DAO ?
What methodology can be employed to locate substrings inside a string?
What is a generic type?
What is System class and its purpose?
Why put method is used?
Core Java 
