java获取class对象的三种方式:
(1)类.class
(2)对象.getClass()
(3)Class的静态方法:Class.forName(“类的全名”) (使用最多)
package com.zml;
public class Demo
{
Class<?> c1 = null;
Class<?> c2 = null;
Class<?> c3 = null;
Test t = new Test();
c1 = t.getClass();
c2 = Test.class;
c3 = Class.forName("com.zml.Test");
}
class Test
{}
newInstance()的使用:
(1)类调用newInstance(),而且返回的是Object
(2)newInstance()是调用类的无参构造方法,
例如:Object o = c3.newInstance();