jvm « cast « Java Data Type Q&A

  1. Java Data Type Q&A
  2. cast
  3. jvm




1. How does the Java cast operator work?    stackoverflow.com

I am trying to debug an issue involving a ClassCastException in Java. In the interest of solving the issue I need to know what is going on when I cast from ...

2. Do I have any method to override System Properties in Java?    stackoverflow.com

I am getting a practical issue and the issue can be dascribed as follows. We are developing a component (Say a plugin) to do some task when an event is triggered within ...

3. When you unbox an object, where is the objects datatype stored so the compiler can perform the cast?    stackoverflow.com

Internally speaking, when you cast an object to a strongly typed object like: 

User u = (User)o;
Where is the type of the object stored? is it stored in another location or ...

4. Java casting implementation    stackoverflow.com

I know how to use casting in Java but have a more specific question; could you please explain to me how the casting works (in memory)?

  • How is the variable type changed ...

5. Class casting and JVM    coderanch.com

When downcasting, Subclass = Superclass, what are the many steps occuring behind the scenes within the JVM ? There is some overhead involved in this action that is best avoided, but I can't find any specific doc on what exactly is happening in the JVM. I don't need the opcodes, although that would be appreciated, but I do want to know ...