在Eclipse 3.x中进行调试时，Java API类不显示变量值

Question

I am working on Eclipse more than 2 years, but suddenly a point has come to mind that:

Why Java APIs Classes does not show variables value while debugging in Eclipse 3.x??

When debug control is on my classes, its properly show all variables value but when control goes to Java API Classes, it doesn't show any value.

When I use the shortcut to display the variable value..a error dialog displays with message "Variable cannot be resolved".

What is this indication? Why not Java show all variables value at any depth of debugging?

Thanks in Advance.

Answer 1

It's because the Java API classes are not compiled with debug symbols. Nothing you can really do about that.