import java.util.ArrayList;

public class Test
{
	public void foo()
	{
		ArrayList<MyType<?>> listOfMyTypes = new ArrayList<MyType<?>>();
		MyType<String> myTypeString = new MyType<String>();
		MyType<Integer> myTypeInteger = new MyType<Integer>();
		myTypeString.setValue("hello");
		myTypeInteger.setValue(5);
		
		listOfMyTypes.add(myTypeString);
		listOfMyTypes.add(myTypeInteger);
		
		for (MyType m : listOfMyTypes)
			System.out.println(m.getValue());
	}
	public static void main(String... args)
	{
		Test test = new Test();
		test.foo();
	}
}

class MyType<T>
{
	private T value;
	public T getValue() { return value; }
	public void setValue(T value) { this.value = value; }
}