Student this_student = new Student();这个是什么意思

Student this_student = new Student();这个是什么意思 Student MyStudent = new Student(); a new student是什么意思 new student Student.this和new Student()区别 Jim ia a new student in Ben's class是什么意思 This is our new student这个句子对不对 student是什么意思?boy是什么意思? The new student is in is yom a new student? Person person=new Student(); person是Person类型还是Student类型? teacher and student是什么意思