学习笔记：JAVA对象继承调用private字段

private字段可继承但无法被使用。因此我们需要用set()，get()方法曲线救国。
注意事项：
子类调用父类的private字段，在子类的构造器中使用super关键字

    public static void main(String[] args){
        Teacher t = new Teacher("wang",20);
        String tName = t.getTeacherName();
        int    tAge  = t.getTeacherAge();
        System.out.println(tName + " , " + tAge);
    }
}
class Person
{
    private String name;
    public String getName()
    {
        return name;
    }
    void setName(String name)
    {
        this.name = name;
    }
}

class Teacher extends Person
{
    private int age;
    Teacher(String name,int age)
    {
        super.setName(name);
        this.age = age; 
    }
    public String getTeacherName()
    {
        String PersonName = super.getName();
        return PersonName;
    }
    public int getTeacherAge()
    {
        return age;
    }
}```