How to get the class of type variable in Java Generics

Question

I\'ve seen similar questions but they didnt help very much.

For instance I\'ve got this Generic Class:

public class ContainerTest
{

    public          


        

Answer 1

To learn the value of T you'll need to capture it in a type definition by subclassing ContainerTest:

class MyStringClass extends ContainerTest {}

You can also do this with an anonymous class if you want:

ContainerTest myStringClass = new ContainerTest{}();

Then to resolve the value of T, you can use TypeTools:

Class stringType = TypeResolver.resolveRawArgument(ContainerTest.class, myStringClass.getClass());
assert stringType == String.class;