如何使用选择来验证java类中的多个值?
我正在用java开发一个虚拟狗类。狗应该增加和/或减少某些属性,如卫生、快乐和能量,基于某些行为,如进食、清洁和玩耍。所有的狗的属性应该在1-100范围内(这是我有问题弄清楚)。如果超出该范围,则应播放警告限制消息。 在此之前,我尝试过以下代码和更多代码,但我似乎总是遇到一些错误,比如负数 这是我的完整代码,请忽略main类和main方法,并查看VirtualSet类:如何使用选择来验证java类中的多个值?,java,class,constructor,boolean,selection,Java,Class,Constructor,Boolean,Selection,我正在用java开发一个虚拟狗类。狗应该增加和/或减少某些属性,如卫生、快乐和能量,基于某些行为,如进食、清洁和玩耍。所有的狗的属性应该在1-100范围内(这是我有问题弄清楚)。如果超出该范围,则应播放警告限制消息。 在此之前,我尝试过以下代码和更多代码,但我似乎总是遇到一些错误,比如负数 这是我的完整代码,请忽略main类和main方法,并查看VirtualSet类: import java.util.Scanner; public class VirtualPetProgram {
import java.util.Scanner;
public class VirtualPetProgram {
public static void main(String[] args) {
// Initialize the Scanner
Scanner input = new Scanner(System.in);
int option;
// Start the user experience
System.out.println("Welcome to the Virtual Pet Program!");
System.out.print("What would you like to name your pet? ");
VirtualPet pet = new VirtualPet(input.nextLine());
do {
System.out.println("\n-----------------------------------------------------------------");
System.out.println("Please enter the integer for the option you choose:");
System.out.println(" 1. Check statuses");
System.out.println(" 2. Feed your virtual pet");
System.out.println(" 3. Play with your virtual pet");
System.out.println(" 4. Clean your virtual pet");
System.out.println(" 5. End program");
System.out.print("\nYour choice: ");
// Get the choice from the user.
option = input.nextInt();
switch (option) {
case 1: // Check statuses
// Retrieve the values using the Getter methods.
System.out.println("\nValues for " + pet.getName());
System.out.println(" Happiness: " + pet.getHappiness());
System.out.println(" Energy: " + pet.getEnergy());
System.out.println(" Hygiene: " + pet.getHygiene());
break;
case 2: // Feed your virtual pet
// Call feed() instance method. VirtualPet's feed() method should be doing all the work.
if (pet.feed()) {
System.out.println("\nYou fed " + pet.getName() + ".");
} else {
System.out.println("\nYou couldn't feed " + pet.getName() + " due to a restriction.");
}
break;
case 3: // Play with your virtual pet
// Call play() instance method. VirtualPet's play() method should be doing all the work.
if (pet.play()) {
System.out.println("\nYou played with " + pet.getName() + ".");
} else {
System.out.println("\nYou couldn't play with " + pet.getName() + " due to a restriction.");
}
break;
case 4: // Clean your virtual pet
// Call clean() instance method. VirtualPet's clean() method should be doing all the work.
if (pet.clean()) {
System.out.println("\nYou cleaned " + pet.getName() + ".");
} else {
System.out.println("\nYou couldn't clean " + pet.getName() + " due to a restriction.");
}
break;
case 5: // End program
// Display a summary depending on how high the happiness is.
System.out.println("Thank you for playing! Here is a summary of your pet's experience:");
if (pet.getHappiness() >= 100) {
System.out.println(" You did a PERFECT job! Your pet loves you!");
} else if (pet.getHappiness() >= 80) {
System.out.println(" You did pretty well! Your pet likes you.");
} else if (pet.getHappiness() >= 60) {
System.out.println(" You did okay. Your pet isn't as happy as it could be.");
} else {
System.out.println(" You could have done a lot better. Your pet isn't very happy.");
}
break;
default: // User selected an invalid option.
System.out.println("\nPlease select a valid option.");
}
} while (option != 5);
}
}
class VirtualPet {
//the attributes should start with the following values:
private int happiness = 25;
private int hygiene = 50;
private int energy = 25;
private String name;
public static final String DEFAULT_NAME = "Jackie";
//the constructor
public VirtualPet(int newHappiness, int newHygiene, int newEnergy) {
happiness = newHappiness;
hygiene = newHygiene;
energy = newEnergy;
}
// the constructor for the name
public VirtualPet(String newName) {
name = newName;
}
//getter and setter method to keep the dog's
//name below 30 characters otherwise it
//invokes the default name.
// I tried to use a separate method for setter
// but for some reason, it didn't work.
//if you have ideas about this issue, I would appreciate it.
public String getName() {
if (name.length() < 30) {
return name;
} else {
name = DEFAULT_NAME;
}
return name;
}
public int getHappiness() {
return happiness;
}
public void setHappiness(int newHappiness) {
happiness = newHappiness;
}
public int getHygiene() {
return hygiene;
}
public void setHygiene(int newHygiene) {
hygiene = newHygiene;
}
public int getEnergy() {
return energy;
}
public void setEnergy(int newEnergy) {
energy = newEnergy;
}
// This is where I set up a boolean method
//to return true and increase both happiness
//and energy if the energy is less than 80.
//the upgrade method called here should work
//as validation for the range of the
//attributes between 1-100.
public boolean feed() {
upgrade();
if (energy < 80) {
happiness += 5;
energy += 30;
} else {
return false;
}
return true;
}
public boolean play() {
upgrade();
if (energy > 30) {
happiness += 20;
energy -= 15;
hygiene -= 30;
} else {
return false;
}
return true;
}
public boolean clean() {
upgrade();
if (energy < 70) {
happiness -= 20;
hygiene += 50;
} else {
return false;
}
return true;
}
// This is the method to validate
//the range of the attributes from 1-100.
//I can't see where or what I am doing wrong
public boolean upgrade() {
if (happiness > 0 && happiness < 100) {
return true;
}
if (energy > 0 && energy < 100){
return true;
}
if (hygiene > 0 && hygiene < 100){
return true;
}
else {
return false;
}
}
}
import java.util.Scanner;
公共类虚拟教育计划{
公共静态void main(字符串[]args){
//初始化扫描仪
扫描仪输入=新扫描仪(System.in);
int选项;
//启动用户体验
System.out.println(“欢迎使用虚拟宠物程序!”);
System.out.print(“您想给您的宠物取什么名字?”);
VirtualPet=新的VirtualPet(input.nextLine());
做{
System.out.println(“\n--------------------------------------------------------------------------------------”;
System.out.println(“请为您选择的选项输入整数:”;
System.out.println(“1.检查状态”);
System.out.println(“2.喂养您的虚拟宠物”);
System.out.println(“3.玩你的虚拟宠物”);
System.out.println(“4.清理虚拟宠物”);
System.out.println(“5.结束程序”);
System.out.print(“\n您的选择:”);
//从用户处获取选择。
option=input.nextInt();
开关(选件){
案例1://检查状态
//使用Getter方法检索值。
System.out.println(“\n值代表”+pet.getName());
System.out.println(“幸福:+pet.getHappiness());
System.out.println(“能量:+pet.getEnergy());
System.out.println(“Hygiene:+pet.getHygiene());
打破
案例2://喂养您的虚拟宠物
//调用feed()实例方法。VirtualSet的feed()方法应该完成所有工作。
if(pet.feed()){
System.out.println(“\n您输入了”+pet.getName()+”);
}否则{
System.out.println(“\n由于限制,您无法馈送”+pet.getName()+”);
}
打破
案例3://玩你的虚拟宠物
//调用play()实例方法。VirtualSet的play()方法应该完成所有工作。
if(pet.play()){
System.out.println(“\n您玩过“+pet.getName()+”);
}否则{
System.out.println(“\n由于限制,您无法使用“+pet.getName()+”);
}
打破
案例4://清洁您的虚拟宠物
//调用clean()实例方法。VirtualSet的clean()方法应该完成所有工作。
if(pet.clean()){
System.out.println(“\n已清理”+pet.getName()+”);
}否则{
System.out.println(“\n由于限制,您无法清除”+pet.getName()+”);
}
打破
案例5://结束方案
//根据幸福感的高低显示摘要。
System.out.println(“感谢您的参与!这里是您宠物的经验总结:”;
如果(pet.getHappiness()>=100){
System.out.println(“你做得很好!你的宠物爱你!”);
}else if(pet.getHappiness()>=80){
System.out.println(“你做得很好!你的宠物喜欢你。”);
}else if(pet.getHappiness()>=60){
System.out.println(“你做得很好,你的宠物并没有它可能的那么高兴。”);
}否则{
System.out.println(“你本可以做得更好,你的宠物不太开心。”);
}
打破
默认值://用户选择了无效选项。
System.out.println(“\n请选择一个有效选项。”);
}
}while(选项!=5);
}
}
类虚拟集合{
//属性应以以下值开头:
私人幸福指数=25;
私人卫生=50;
私人国际能源=25;
私有字符串名称;
公共静态最终字符串默认值_NAME=“Jackie”;
//构造器
公共虚拟网(int新幸福、int新卫生、int新能源){
幸福=新的幸福;
卫生=新卫生;
能源=新能源;
}
//名称的构造函数
公共VirtualSet(字符串newName){
name=newName;
}
//getter和setter方法来保持狗的
//名称少于30个字符,否则将被删除
//调用默认名称。
//我尝试对setter使用单独的方法
//但由于某种原因,它没有起作用。
//如果你对这个问题有什么想法,我将不胜感激。
公共字符串getName(){
if(name.length()<30){
返回名称;
}否则{
名称=默认名称;
}
返回名称;
}
公共幸福指数{
回归幸福;
}
公共幸福(int newHappiness){
幸福=新的幸福;
}
公共卫生(){
返回卫生;
}
公共卫生(国际新卫生){
hy
public boolean feed() {
if (energy < 80) {
happiness += 5;
energy += 30;
}
return upgrade();
}
public boolean play() {
if (energy > 30) {
happiness += 20;
energy -= 15;
hygiene -= 30;
{
return upgrade();
}
public boolean clean() {
if (energy < 70) {
happiness -= 20;
hygiene += 50;
{
return upgrade();
}
// This is the method to validate
//the range of the attributes from 1-100.
//I can't see where or what I am doing wrong
public boolean upgrade() {
if (happiness > 0 && happiness < 100) {
return true;
}
if (energy > 0 && energy < 100){
return true;
}
if (hygiene > 0 && hygiene < 100){
return true;
}
else {
return false;
}
}
public boolean upgrade() {
boolean isInRange=true;
if(happiness>100){
happiness=100;
isInRange=false;
}
if(happiness<0){
happiness=0;
isInRange=false;
}
if(energy>100){
energy=100;
isInRange=false;
}
if(energy<0){
energy=0;
isInRange=false;
}
if(hygiene>100){
hygiene=100;
isInRange=false;
}
if(hygiene<0){
hygiene=0;
isInRange=false;
}
return isInRange;
}