摘要：
import java.util.ArrayList; import java.util.List; import java.util.Set; import java.util.concurrent.ConcurrentHashMap; import java.util.function.Func 阅读全文
摘要：
private static class ParameterizedTypeTest<T extends Number> { private List<T> list = null; public static void main(String[] args) throws NoSuchFieldE 阅读全文