第三十一章 反射入门技术

貌似就是利用反射构造出一个实例出来，而没有用new，具体作用不懂

package cn.itcast.jdbc;import java.lang.reflect.Constructor;public class ReflectTest {public static void main(String[] args)throws Exception{Class clazz = User.class;clazz = Bean.class;Object obj = create(clazz);System.out.println(obj);}static Object create(Class clazz)throws Exception{Constructor con = clazz.getConstructor(String.class);Object obj = con.newInstance("test name");return obj;}}

package cn.itcast.jdbc;import java.sql.Date;public class User {private Integer id;private String name;private Date birthday;private Float money;public User(String name){this.name = name;}public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Date getBirthday() {return birthday;}public void setBirthday(Date birthday) {this.birthday = birthday;}public Float getMoney() {return money;}public void setMoney(Float money) {this.money = money;}}

package cn.itcast.jdbc;public class Bean {private String name;public Bean(String n){this.name = name;}public String toString(){return super.toString();}}