java子类继承父类的方法（代码简略版）

父类：
public class Subjects {

    public void b() {
        System.out.println("学科");
    }
    public void a(){
        System.out.println("这是继承父类的方法：Subjects");
    }
    public void c() {
        System.out.println("这是父类的数学");
    }
    public void d() {
        System.out.println("这是父类的英语");
    }
    public void e() {
        System.out.println("这是父类的体育");
    }
}

语文子类：

public class Language extends Subjects{

    @Override
    public void b(){
        System.out.println("这是重写子类的方法：语文");
    }

    public static void main(String[] args) {
        Language language = new Language();// 子类引用指向自身对象
        language.b();// 子类覆盖了父类方法，所以调用新方法

        Subjects subjects = new Language();
        subjects.a();
    }
}

数学子类：

public class Math extends Subjects{

    @Override
    public void c(){
        System.out.println("数学");
    }

    public static void main(String[] args) {
        Math math = new Math();
        math.c();
        
        Subjects subjects = new Math();
        subjects.a();
    }
}

英语子类：

public class English extends Subjects {
    @Override
    public void c(){
        System.out.println("英语");
    }

    public static void main(String[] args) {
        English english = new English();
        english.d();

        Subjects subjects = new English();
        subjects.a();
    }
}

体育子类：

public class Physical extends Subjects {
    @Override
    public void d(){
        System.out.println("体育");
    }

    public static void main(String[] args) {
        Physical physical = new Physical();
        physical.e();

        Subjects subjects = new Physical();
        subjects.a();
    }
}