JAVA中的反射中載入類的方法

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反射：載入類的方法有三種，

1.用Class.forName("類名")方法來調用;

2.類名.class得到

3.用對象.getClass()得到

package com.ma.reflection;import org.junit.Test;import com.ma.bean.UserBean;public class Demo1 {/** * 反射：載入類的方法 */@Testpublic void test1(){//1.用Class.forName("類名")方法來調用;try {Class<?> c = Class.forName("com.ma.bean.UserBean");System.out.println(c);} catch (ClassNotFoundException e) {e.printStackTrace();}//2.類名.class得到Class<?> cla1 =  UserBean.class;System.out.println(cla1);//3.用對象.getClass()得到Class<?> cla2 =  new UserBean().getClass();System.out.println(cla2);}}

　　UserBean實體類

package com.ma.bean;/** * UserBean實體類 * @author ma * */public class UserBean {private String id;private String name = "張三";private String password;public UserBean() {super();System.out.println("我是無參構造方法");}public UserBean(String id, String name, String password) {super();this.id = id;this.name = name;this.password = password;System.out.println("我是有參構造方法");}public String getId() {return id;}public void setId(String id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}@Overridepublic String toString() {return "UserBean [id=" + id + ", name=" + name + ", password="+ password + "]";}private UserBean(String name){this.name = name;System.out.println(name);} }

　　

JAVA中的反射中載入類的方法