请问关于这个怎么写测试代码？
package student;import java.util.*;
public class Teacher {
long teacherID;
String teacherName;
int intime;
String technicalTitle;
String courses;
Teacher (long tid,String tn,int it)
{
teacherID=tid;
teacherName=tn;
intime=it;
technicalTitle="无";
}
Teacher(){
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
long getTeacherID()
{
return teacherID;
}
String getteacherName()
{
return teacherName;
}
String getTechnicalTitle()
{
return technicalTitle;
}
void setTechnicalTitle(String newtitle)
{
Calendar myCalendar=Calendar.getInstance();
myCalendar.setTime(new Date());
if((myCalendar.get(Calendar.YEAR)-intime)>5)
technicalTitle=newtitle;
else
System.out.println("未到晋升时间，尚不能晋升职称。");
}
String SetCourses(String newc)
{
courses=newc;
return courses;
}
public String toString()
{
return "该老师是："+teacherID+"|"+teacherName+"|"+intime+"|"+technicalTitle+
"|"+courses;
}
}
