java学着，求大神解答，在JiChengDemo中打印出姓名和年龄；

[jhzhlc]

public class Person {
private String name ;
private int age;
public Person(String name, int age){
this.name = name;
this.age = age;

}
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;
}



}public class Student extends Person {
public Student (String name,int age) {

super (name,age);
}

}
public class JiChengDemo {
public static void main(String[] args){
Student std1 = new Student("小张",14);
System.out.println();
}

}
运行后什么都没有显示，这是哪儿的原因？？求解

[志于青筱梦于马]

重写一下类中的toString（）方法，然后再打印实例对象

[天上掉个大馅饼]

[code=java]public class JiChengDemo {
public static void main(String[] args){
 Student std1 = new Student("小张",14);
 System.out.println(std1);
}
}

[/code]

[杨不休不休]

你的输出为空啊，你不输出std1，当然没结果