JavaCompilerCore/test/astfactory/ASTFactoryTest.java

package astfactory;

//import javafx.collections.ObservableList;
import org.junit.Test;

import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.lang.reflect.TypeVariable;
import java.util.Arrays;
import java.util.HashMap;

import static org.junit.Assert.*;

public class ASTFactoryTest<A> extends HashMap<String, A>{
    @Test
    public void test(){
        System.out.println((this.getClass().getGenericSuperclass()));
        Type[] arguments = ((ParameterizedType) this.getClass().getGenericSuperclass()).getActualTypeArguments();
        System.out.println(Arrays.toString(arguments));
        System.out.println(((TypeVariable)arguments[1]).getGenericDeclaration());
    }
}