Java初学Text3

1：使用封装的思想实现对User, username,password,age,sex,和age和性别做限制

年龄在0-130是合理的，超过这个范围给出默认值20

String , 比较  equals()

package javaHome3;

public class User {
	private String username;
	private String password;
	private String sex;
	private int age=20;
	public User(){}
	public User(String username,String password,String sex,int age){}
	
	public int getAge(int age) {
		if(age>0&&age<130){
			this.age=age;
		}
		return age;
	}
	
	public void setAge(int age) {
		this.age = age;
	}
	
	public String getPassword(String password) {
		this.password = password;
		return password;
	}
	
	public void setPassword(String password) {
		this.password = password;
	}
	
	public String getSex(String sex) {
		if(sex.equals("男")||sex.equals("女")){
			this.sex=sex;
		}
		return sex;
	}
	
	public void setSex(String sex) {
		this.sex = sex;
	}
	
	public String getUsername(String username) {
		this.username=username;
		return username;
	}
	
	public void setUsername(String username) {
		this.username = username;
	}
	public void show(){
		System.out.println("用户名是："+username+";密码是："+password
				+";年龄是："+age+";性别是："+sex+"。");
	}
}



package javaHome3;

import java.util.Scanner;

public class DemoUser {
	public static void main(String[] args) {
		System.out.println("请输入用户名：");
		Scanner n=new Scanner(System.in);
		String username=n.next();
		System.out.println("请输入密码：");
		String password=n.next();
		System.out.println("请输入性别：");
		String sex=n.next();
		System.out.println("请输入年龄(0-130是合理，超出默认20)：");
		int age=n.nextInt();
		User us=new User(username,password,sex,age);
		us.getUsername(username);
		us.getPassword(password);
		us.getSex(sex);
		us.getAge(age);
		us.show();
	}

}

运行结果：

package javaWeek3;

import java.util.Scanner;

public class Voter {
	static int count=90;
	static int[] voter=new int[100];
	static void vote(){
		for (int i = 0; i < 999; i++) {
			voter[i]=i+91;
			Scanner sc=new Scanner(System.in);
			int x=sc.nextInt();
			if(count<100){
				if(x==1){				
				count++;
				System.out.println(voter[i]+"号"+"投了一票！"+"当前票数是"+count+"。");
				}else{
					System.out.println(voter[i]+"号"+"放弃投票"+"当前票数是"+count+"。");
				}
				if(count==100){
					System.out.println("票数满100，停止投票！");
					break;
				}
				
			}
		}
		
	}
	public static void main(String[] args) {
//		Scanner sc=new Scanner(System.in);
//		int x=sc.nextInt();
		System.out.println("输入1投票，输入其他放弃投票：");
		Voter.vote();
	}
}

 运行结果：

package javaWeek3;

import java.util.Scanner;

public class Penguin extends Pet {
	private int lovely=60;
	public Penguin(){}
	public Penguin(String name,String type,int lovely,int health,String area,String sex){}
	
	
	public int getLovely() {
		
		return lovely;
	}
	
	public void setLovely(int lovely) {
		this.lovely = lovely;
		if(this.lovely<0||this.lovely>100){
			System.out.println("健康值应在1~100之间");
		}else{this.lovely=60;}
	};
	public void showp(){
		Scanner n=new Scanner(System.in);
		System.out.println("请输入亲密度：");
		this.lovely=n.nextInt();

		
	}
	public void showp2(){
		System.out.println("我的亲密度是:"+lovely);
	}



}

package javaWeek3;

import java.util.Scanner;

public class DemoPen {
	public static void main(String[] args) {
		for (int i = 0; i<5; i++) {
		System.out.println("欢迎来到宠物店：");
		Scanner n=new Scanner(System.in);
		System.out.println("请输入要领养宠物的名字：");
		String name=n.next();//输入名字
		System.out.println("请输入要领养宠物的类型(狗狗，企鹅)：");
		String type=n.next();
		System.out.println("请输入性别(GG,MM)：");
		String sex=n.next();
		System.out.println("请输入健康值(1~100之间,默认值为60)");
		int health=n.nextInt();		
		Dog d=new Dog();
		Penguin p=new Penguin();
			d.setName(name);
			d.setType(type);
			d.setSex(sex);
			d.setHealth(health);
			if(type.equals("狗狗")){
				d.showd();
				System.out.println("下面是宠物的自白：");	
				d.showd2();
				d.show0();
			}else if(type.equals("企鹅")){
					p.setName(name);
					p.setType(type);
					p.setSex(sex);
					p.setHealth(health);
					p.showp();
					System.out.println("下面是宠物的自白：");	
					p.showp2();
					p.show0();
				}else if(name.equals("结束")){
					System.out.println("谢谢惠顾！");
					break;
				}
			
		}
		
		
		
	}

}

运行结果：