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Java provide equivalent class types for primitive types.
int - Integer
double - Double etc...
These classes are called wrapper classes, because they are wrapping the primitive values.
Before java 1.5 to wrap a primitive value there are workarounds.
From java 1.5 it is automated. That is why this is called autoboxing.
from java 1.5 we can write
Integer i=10;
Double d=10.5;
you don't need to write any object creation code
Eg. Double d=new double();
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