java174-constructor类反射编程

//class反射编程
 //定义一个学生类
 public class test124 {
     public String name;
     protected int age;
  
     double height;
     private double money;
  
     public void setName(String name) {
         this.name = name;
     }
  
     public String getName() {
         return name;
     }
  
     public int getAge() {
         return age;
     }
  
     public void setAge(int age) {
         this.age = age;
     }
  
     public test124(String name, Integer age){
         this.name=name;
         this.age=age;
         System.out.println( "调用有参构造方法" );
     }
  
     public test124(String name,int age,double money){
         this.name=name;
         this.age=age;
         this.money=money;
     }
     //看书
     public void learn(BookRead book){
         System.out.println( "我的名字"+name+ "我正在学习"+book.getName());
     }
     //奔跑
     public void run(){
         System.out.println( "我们喜欢奔跑" );
     }
 }
 定义constructor类import java.lang.reflect.Constructor;
  
 //constructor类反射编程
 public class test127{
     public static void main(String[] args){
         try {
             //获取构造器
             Class<?> stuCla = Class.forName( "test124" );
             //获取构造器反射相关方法实现对象的创建
             Constructor cons=stuCla.getConstructor( String.class,Integer.class );
             test124 stuObj=(test124)cons.newInstance( "歌谣",23 );
             System.out.println( "我的名字是"+stuObj.getName()+"我的年龄"+stuObj.getAge() );
             System.out.println( "构造器的访问级别"+cons.getModifiers() );
             System.out.println( "参数的个数" +cons.getParameterCount());
         }catch (Exception e){
  
             e.printStackTrace();
         }
     }
 }      

运行结果