class Person {

     private String name;

     private int age;

     public String getName() {

         return this.name;

     }

     public void setName(String name) {

         this.name = name;

     }

     public int getAge() {

         return this.age;

     }

     public void setAge(int age) {

         this.age = age;

     }

     public int getAge() {

         return this.age;

     }

     public String toString() {

         return "姓名: " + this.name + ", 年龄: " + this.age;

     }

 }

 public class InstanceDemo01 {

     public static void main(String args[]) {

         Class<?> c = null;

         try {

             c = Class.forName("Person");

         } catch(ClassNotFoundException e) {

             e.printStackTrace();

         }

         Person per = null;

         try {

             per = (Person)c.newInstance();    // 实例化Person对象

         } catch(Exception e) {

             e.printStackTrace();

         }

         per.setName("李兴华");

         per.setAge(30);
System.out.println(per);            // 内容输出: 调用toString()

     }

 }