类方法学习五:getGenericSuperclass,getSuperclass

一.说明

1.Class<? super T> getSuperclass():返回本类的父类

2.Type getGenericSuperclass():返回本类的父类,包含泛型参数信息

二.例子

1.ClassA.java

public class  ClassA <T>{

  private T obj;

  public void setObject(T obj) {

    this.obj = obj;

  }



  public T getObject() {

    return obj;

  }

}

2.Test.java

import java.lang.reflect.Type;

import java.lang.reflect.ParameterizedType;



public class Test<T> extends ClassA<T>{



  public static void main(String args[]) throws Exception{

    System.out.println("======getSuperclass======:");

    System.out.println(Test.class.getSuperclass().getName());



    System.out.println("======getGenericSuperclass======:");

    Type t = Test.class.getGenericSuperclass();

    System.out.println(t);

    if (ParameterizedType.class.isAssignableFrom(t.getClass())) {

      System.out.print("----------->getActualTypeArguments:");

      for (Type t1:((ParameterizedType)t).getActualTypeArguments()) {

        System.out.print(t1 + ",");

      }

      System.out.println();

    }

  }

}

输出结果:

======getSuperclass======:

ClassA

======getGenericSuperclass======:

ClassA<T>

----------->getActualTypeArguments:T,