autobox « primitive « Java Data Type Q&A

1. Is this really widening vs autoboxing?    stackoverflow.com

I saw this in another question in reference to shortcomings of the java spec:

There are more shortcomings and this is a subtle topic. Check this out:

public class ...

2. Boxed Primitives and Equivalence    stackoverflow.com

So I was asked this question today.

Integer a = 3;
Integer b = 2;
Integer c = 5;
Integer d = a + b;
System.out.println(c == d);

3. JNI new primitive types    stackoverflow.com

How can we new primitive types in JNI. I have a function that returns a jobject. It is possible to return jint, jchar, etc. There is NewString, why not NewInteger, NewCharacter, ...

4. Object or primitive type    stackoverflow.com

Can someone explain to me the usage of Integer, Boolean etc in place of their primitive types in JAVA? I can't seem to grasp the advantages their are providing. They seem to ...

5. Consequences of changing a primitive to a Boxed Primitive in a Java Application    stackoverflow.com

I am working on an application in which all performance values for a given item are primitives. However, there is now the possibility that one of these values - Revenue - ...

6. Why do people still use primitive types in Java?    stackoverflow.com

Since Java 5, we've had boxing/unboxing of primitive types so that int is wrapped to be java.lang.Integer, and so and and so forth. I see a lot of new Java projects ...

7. Java Primitive Implementation    stackoverflow.com

Java has both object, Integer, and primitive version, int, of basic types. The primitive versions are faster/lighter/etc. so in general you should use them. What I am wondering is why the designers of ...