Check « primitive « Java Data Type Q&A

1. Check type of primitive field    stackoverflow.com

I'm trying to determine the type of a field on an object. I don't know the type of the object when it is passed to me but I need to find ...

2. Checking if a class has an associated primitive type    stackoverflow.com

Is there an easy way to detect whether a Class such as Integer or Long has an associated primitive type? (e.g. int and long respectively) And by easy I don't mean something ...

3. How can I check if a variable exists in Java?    stackoverflow.com

I want to write to a variable only if there isn't anything already there. Here is my code so far.

if (inv[0] == null) {
    inv[0]=map.getTileId(tileX-1, tileY-1, 0);
}

4. Clean way of checking if object type is primitive or String    coderanch.com

Hi, I'm just wondering if any method exists in Java where I can pass a value of type object and it will check to see if the type is primitive or String. Basically I want to avoid other objects such as collections, reference objects etc. Currently I have the following code if ((value instanceof String) || (value instanceof Byte) || (value ...

5. How to check entered value is of which primitive type?    coderanch.com

6. Clean way of checking if object type is primitive or String    forums.oracle.com

Not really sure what this is all about... what fundamental problem is the OP trying to solve?... but they all look like ugly solutions to me... Heavy reliance upon instanceof is not encouraged... it's indicative of a design mistake. Overloading would produce a lot of boilerplate code... especially if you have need to do this in many places. One question: does ...