JAVA_SE使用反射机制new实例简例

先建立一个People类，包含两个构造方法

package in.xlc.net;

public class People {

private String name;

private int age;

public String getName() {

System.out.println("Get Name");

return name;

}

public void setName(String name) {

this.name = name;

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public People(String name, int age) {

super();

this.name = name;

this.age = age;

System.out.println("Two People");

}

public People() {

super();

System.out.println("People");

// TODO 自动生成的构造函数存根

}

}

****************************************************************************************

package in.xlc.net;

import java.lang.reflect.Constructor;

import java.lang.reflect.InvocationTargetException;

public class Test {

public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, SecurityException, IllegalArgumentException, InvocationTargetException  {

// TODO 自动生成的方法存根

fun1();

fun2();

}

public static void fun2() throws ClassNotFoundException, InstantiationException, IllegalAccessException {

// TODO 自动生成的方法存根

Class test = Class.forName("in.xlc.net.People");

System.out.println(test);

Object obj=test.newInstance();

}

public static void fun1() throws ClassNotFoundException, InstantiationException, IllegalAccessException, NoSuchMethodException, SecurityException, IllegalArgumentException, InvocationTargetException{

Class test = Class.forName("in.xlc.net.People");

System.out.println(test);

Constructor cons= test.getConstructor(String.class,int.class);

System.out.println(cons);

Object Obj=cons.newInstance("xiaoqiang",16);

}

}