Java 抽象类的应用
package hello; abstract class Person{ private int age; // 声明公有的属性,年龄(age)和姓名(string) private String name; public int getAge() { return age; } public Person(int age, String name){ // 构造方法 this.age = age; this.name = name; } public void setAge(int age) { // 私有属性的 getattr 和 setattr 方法 this.age = age; } public String getName() { return name; } public void setName(String name) { this.name = name; } abstract void want(); // 声明抽象函数 } class Student extends Person{
/*
* Student 扩展了抽象类,并且抽象类中有构造方法和抽象方法,因此在 Student 类中要复写抽象类中的构造方法和抽象方法
*/ private int score; public int getScore() { return score; } public void setScore(int score) { this.score = score; } public Student(int age, String name, int score) { super(age, name); this.score = score; } @Override void want() { System.out.println("Name: " + this.getName() + " Age: "+ this.getAge() + "Score :" + this.getScore()); } } public class Demo03 { public static void main(String[] args) { Student student = new Student(10, "zhangsan", 100); student.want(); } }