java中怎么动态的给类的属性赋值

利用java的反射机制可以做到：

Object instance = beanClass.newInstance()//beanClass自定义class

Method setJobName = beanClass.getMethod("setJobName", String.class)

method.invoke(instance, "Super Cool Job")//开始设置值。

abstract class Person {

String name

int age

String professional

Person(String name,int age,String professional) {

this.name= name

this.age = age

this.professional=professional

}

public abstract void display()

}

class Students extends Person {

int year

Students(String n,int a,String p,int year) {

super(n,a,p)

this.year=year

}

public void display() {

System.out.println("我的姓名="+ name + " " + "我的年龄="+age +" " +"我的专业="+professional+"我的出生年为"+year)

}

}

public class Test5 {

public static void main(String[] args) {

Person p = new Students("男",19,"美术")

Person o = new Students("女",14,"跳舞")

p.display()

o.display()

}

}

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