package pravtice1;
public class Person {
private int age;
private String name;
public Person() {
super();
}
public Person(int age, String name) {
super();
this.age = age;
this.name = name;
}
/**
* @return the age
*/
public int getAge() {
return age;
}
/**
* @param age the age to set
*/
public void setAge(int age) {
this.age = age;
}
/**
* @return the name
*/
public String getName() {
return name;
}
/**
* @param name the name to set
*/
public void setName(String name) {
this.name = name;
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "Person [age=" + age + ", name=" + name + "]";
}
}
package pravtice1;
public class Student extends Person {
private int age;
private String name;
public Student() {
super();
// TODO Auto-generated constructor stub
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
public Student(int age, String name) {
super(age, name);
// TODO Auto-generated constructor stub
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "Student [age=" + age + ", name=" + name + "]";
}
}
package pravtice1;
public class Test1 {
public static void main(String[] args) {
Student s = new Student(18,"张三");
String name = s.getName();
System.out.println(name);
System.out.println(s.toString());
}
}
打印结果时，toString方发打印结果还是默认值，怎么回事啊？
打印结果如下
张三
Student [age=0, name=null]
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