【JAVA】继承练习（1）_继承练习项目-优快云博客

本文通过项目经理和程序员两个类的实例，展示了继承在代码复用中的应用。继承允许子类继承父类的属性和方法，同时可以扩展新的功能，如项目经理类在继承员工基本信息的基础上增加了奖金属性。

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继承的目的就是代码的复用，省去重复的工作，同时又可以在父类的基础上进行属性或功能的拓展。
下面是继承的一道小题：
项目经理类
属性：姓名工号工资奖金
行为：工作work(打印姓名、工号、工资、奖金)
程序员类
属性：姓名工号工资
行为：工作work(打印姓名、工号、工资)

██public class Staff {
	protected String name;
	protected int number;
	protected int Annual_salary;

	public Staff(String name, int number, int Annual_salary) {
		this.name = name;
		this.number = number;
		this.Annual_salary = Annual_salary;
	}

	public String getName() {
		return name;
	}

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

	public int getNumber() {
		return number;
	}

	public void setNumber(int number) {
		this.number = number;
	}

	public int getAnnual_salary() {
		return Annual_salary;
	}

	public void setAnnual_salary(int Annual_salary) {
		this.Annual_salary = Annual_salary;
	}
}


██public class Manager extends Staff {
	private int bonus;

	public int getBonus() {
		return bonus;
	}
	public void setBonus(int bonus) {
		this.bonus = bonus;
	}

	public Manager(String name, int number, int Annual_salary, int bonus) {
		super(name, number, Annual_salary);
		this.bonus = bonus;
	}

	public String toString() {
		return "姓名:" + this.name + " 工号:" + this.number + " 年薪:" + this.Annual_salary + " 奖金:" + this.bonus;
	}
}


██public class Programmer extends Staff {
	public Programmer(String name, int number, int Annual_salary) {
		super(name, number, Annual_salary);
	}

	public String toString() {
		return "姓名:" + this.name + " 工号:" + this.number + " 年薪:" + this.Annual_salary;
	}
}


██public class Inherit_Test {
	public static void main(String[] args) {
		Manager m = new Manager("权栈", 1001, 600000, 30000);
		Programmer p = new Programmer("马农", 5005, 150000);
		System.out.println(m);
		System.out.println(p);
	}
}