命令提示符显示 java 编译成功但是执行不了(环境变量也没有错)

Question

 class Person{
private String name;
private String location;
Person(String name){
this.name = name;
this.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 name,String location,String school){
super(name,location);
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 name,String location,String capital){
super(name,location);
this.capital = capital;
}
public String info(){
return super.info() + "capital:" + 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("d","shanghai","S2");
Teacher t1 = new Teacher("e","professor"); 
System.out.println(p1.info());
System.out.println(p2.info());
  System.out.println(s1.info());
System.out.println(s2.info());
System.out.println(t1.info());
}

}

Answer 1

可以呀！你咋弄的！下面 是我用CMD打出来的
C:\Users\Administrator\Desktop>javac TestTeacher.javaC:\Users\Administrator\Desktop>java TestTeacher
name:a location:beijing
name:b location:shanghai
name:c location:beijingschool:S1
name:d location:shanghaischool:S2
name:e location:beijingcapital:professor

Answer 2

没把当前路径设置为CLASSPATH变量吧。java TestTeacher -cp .别漏了最后面的“.”