JAVA中出现Person b=new teacher()怎么理解(补充:teacher类继承了person类)
JAVA中出现Person b=new teacher()怎么理解(补充:teacher类继承了person类)
JAVA中,写的Person类的class Person这行提示了The type Person is already
类Teacher和Student是类Person的子类
Java A b = new B(); B继承A .
java中假设B继承A,C继承B 下面A a=new C();与C a=new C()有区别吗?多态到底是什么意思.
java中的类c继承了b,b继承了a,c可以直接调用a的方法吗?怎么调用.
the person that i respect is teacher
JAVA开发 for(Person person :persons)是什么意思?
在Java中,有两个类Student和Person.如果Student是Person的子类,则下列声明对象x的语句中错误
java:类A已经继承类B,由于业务的需要还要继承类C ,怎么实现?
Person person=new Student(); person是Person类型还是Student类型?
He is the ( )person ( ) the teacher spoke.A.very,whom B.very