package com.ygl.reflect;


import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;


public class ReflectTest {
public Object  copy(Object  object) throws IllegalArgumentException, InstantiationException, IllegalAccessException, InvocationTargetException{
//使用物件的getClass()方法,前提先有物件例項
Class<?> clazz=object.getClass();
System.out.println(clazz.getName());//com.ygl.reflect.Customer
try {
/*//無參的構造器
Constructor  cons=clazz.getConstructor(new Class[]{});
//無參的例項
Object obj=cons.newInstance(new Object[]{});
System.out.println(obj);
//上面兩個方法等價於
Object obj2=clazz.newInstance();//只能構造無參的物件
*/

Constructor  cons=clazz.getConstructor(new Class[]{String.class,int.class});
Object obj=cons.newInstance(new Object[]{"ygl",25});
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}


return object;

}


public static void main(String[] args) {
ReflectTest  reflectTest=new ReflectTest();
try {
reflectTest.copy(new Customer());
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InstantiationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println();
}
}




class Customer{
private Long id;
private String name;
private int age;

public Customer() {

}

public Customer(String name,int age) {
this.name=name;
this.age=age;
}


public Long getId() {
return id;
}


public void setId(Long id) {
this.id = id;
}


public String getName() {
return name;
}


public void setName(String name) {
this.name = name;
}


public int getAge() {
return age;
}


public void setAge(int age) {
this.age = age;
}
}