java程序在eclipse运行下出错，但是在cmd可以正常运行，求大神！

Question

源代码：
class Person{
private String name;
private String location;

Person(String name){
    this.name = name;
    location = "beijing";
}

Person(String name,String location){
    this.name = name;
    this.location = location;
}

public String info(){
    return "name:"+name+"location:"+location;
}

}

class Student extends Person {
private String school;
Student(String name,
String school) {
this(name,"beijing", school);
}
Student(String n,String l,String school) {
super(n,l);
this.school = school;
}
public String info() {
return super.info()+
" school: "+school;
}
}

class Teacher extends Person{
private String capital;

Teacher(String name,String capital){
    this(name,"beijing",capital);
}

Teacher(String n,String l,String capital){
    super(n,l);
    this.capital = capital;
}

public String info(){
    return super.info()+"location"+capital;
}

}

public class TestTeacher {
public static void main(String[] args) {
Person p1 = new Person("A");
Person p2 = new Person("B","shanghai");
Student s1 = new Student("C","S1");
Student s2 = new Student("C","shanghai","S2");
System.out.println(p1.info());
System.out.println(p2.info());
System.out.println(s1.info());
System.out.println(s2.info());

    Teacher t1 = new Teacher("D","Professor");
    System.out.println(t1.info());
}

}

错误：
Exception in thread "main" java.lang.NoSuchMethodError: Person.(Ljava/lang/String;)Vat TestTeacher.main(TestTeacher.java:55)

Answer 1

person构造函数前面加上public