Java toString()在多继承关系中的应用

最新推荐文章于 2021-08-10 11:52:33 发布

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本文探讨了Java编程中抽象类和继承的概念，通过实例展示了如何使用抽象类来定义通用行为，并通过子类实现具体行为，以创建学生和毕业生类。通过设置属性和方法，演示了如何在子类中覆盖父类的方法和添加特定于子类的特性。

package com.test.javaSe;

abstract class Person {
	private int age;
	private String name;

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public void say() {
	};

	public abstract void run();

	@Override
	public String toString() {
		// TODO Auto-generated method stub
		return this.name + " " + this.age;
	}
}

abstract class Student extends Person {
	String schoolName;

	public abstract int getPropertityes();

	public String getSchoolName() {
		return schoolName;
	}

	public void setSchoolName(String schoolName) {
		this.schoolName = schoolName;
	}

	@Override
	public String toString() {
		// TODO Auto-generated method stub
		return super.toString() + " " + this.schoolName;
	}
}

class Graduate extends Student {
    int classId;
	public int getClassId() {
		return classId;
	}

	public void setClassId(int classId) {
		this.classId = classId;
	}

	@Override
	public void run() {
		// TODO Auto-generated method stub
		System.out.println("run.....");
	}

	@Override
	public int getPropertityes() {
		// TODO Auto-generated method stub
		return 0;
	}
	@Override
	public String toString() {
		// TODO Auto-generated method stub
		return super.toString()+" "+this.classId;
	}
}

public class AbstractTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Person p = new Graduate();
		Graduate g = new Graduate();
		g.setAge(22);
		g.setName("ctl");
		g.setSchoolName("kjxy");
		g.setClassId(2010151430);
		p = g;
		System.out.println(p);
//ctl 22 kjxy 2010151430

	}

}