Need help with a loop

Cheekz185 · 05-10-2007, 05:23 PM

Ok so i am writing a little program for school. The program is 99% done all i want to do left is add a loop so it will keep going back to the "selection menu" It is coded in java. I was wondering because i cant get a loop to seem to work. WOuld anyone beable to help put a loop so it keeps going back the the menu after the selection? ALso i need to add an exit button well here is the program:

Code:

import java.io.*;

public class PetTest {
    public static void main(String[] args) {
    	 try {
            BufferedReader br = new BufferedReader(
                                new InputStreamReader(System.in));
			System.out.println("------------------------------------------------");
            System.out.println("Please Choose From the Following:\n 1. Dogs " +
                               "2. Cats 3. Fish 4. Birds  5. VIEW ALL ");
			System.out.println("------------------------------------------------");
            String line = br.readLine().trim();
            int selection = Integer.parseInt(line);
            String s = "";
            switch(selection) {
                case 1:
                    s = "dog";
                    break;
                case 2:
                    s = "cat";
                    break;
                case 3:
                    s = "bird";
                    break;
                case 4:
                    s = "fish";
                    break;
                case 5:
                    s = "View All";
                    break;
                default:
                    s = "unexected selection";
            }
            System.out.println("selection = " + s);
            Dog dog = null ;
            Cat cat = null;
            Fish fish = null;
            Bird bird = null;
            
            if(s.equalsIgnoreCase("dog") || s.equalsIgnoreCase("View All"))
            {
            dog = new Dog(4, 12, 50.00, "Terrier", Dog.DRY);
            System.out.println("\ndog = " + dog);
            }
            
            if(s.equalsIgnoreCase("cat") || s.equalsIgnoreCase("View All")){
            cat = new Cat(5, 5, 25.00, "Persian", Cat.CLAWED);
            System.out.println("\ncat = " + cat);}
            
             if(s.equalsIgnoreCase("bird")|| s.equalsIgnoreCase("View All")){
            bird = new Bird(3, 2, 5.00, "Canary", "USA");
            System.out.println("\nbird = " + bird);}
            
             if(s.equalsIgnoreCase("fish")|| s.equalsIgnoreCase("View All")){
             fish = new Fish(1, 1, 10.00, "Angel", Fish.SALT);
            System.out.println("\nfish = " + fish);
            }
            
            br.close();
        } catch(IOException e) {
            System.out.println("Read error: " + e.getMessage());
        }
 
        
        
    }
}
 
class Pet {
    int age;
    double weight;
    double price;
 
    protected Pet(int age, double weight, double price) {
        this.age = age;
        this.weight = weight;
        this.price = price;
    }
 
    public String toString() {
        //String name = getClass().getName();
        return ", \nage:" + age +
               ", \nweight:" + weight +
               ", \nprice:" + price;
    }
}
 
class Dog extends Pet {
    String breed;
    String foodType;
    final static String CANNED = "canned food";
    final static String DRY    = "dry food";
 
    public Dog(int age, double weight, double price,
               String breed, String foodType) {
        super(age, weight, price);
        this.breed = breed;
        this.foodType = foodType;
    }
 
    public String toString() {
        return "\n\nDog \nbreed:" + breed +
               ", \nfoodType:" + foodType + super.toString() + "";
    }
}
 
class Cat extends Pet {
    String breed;
    String clawStatus;
    final static String CLAWED   = "has claws";
    final static String DECLAWED = "de-clawed";
 
    public Cat(int age, double weight, double price,
               String breed, String clawStatus) {
        super(age, weight, price);
        this.breed = breed;
        this.clawStatus = clawStatus;
    }
 
    public String toString() {
        return "\n\nCat \nbreed:" + breed +
               ", \nclawStatus:" + clawStatus +
                super.toString() + "";
    }
}
 
class Bird extends Pet {
    String type;
    String nationalOrigin;
 
    public Bird(int age, double weight, double price,
                String type, String origin) {
        super(age, weight, price);
        this.type = type;
        nationalOrigin = origin;
    }
 
    public String toString() {
        return "\n\nBird \ntype:" + type +
               ", \nnationalOrigin:" + nationalOrigin +
                super.toString() + "";
    }
}
 
class Fish extends Pet {
    String type;
    String waterType;
    final static String FRESH = "freah water";
    final static String SALT  = "salt water";
 
    public Fish(int age, double weight, double price,
                String type, String habitat) {
        super(age, weight, price);
        this.type = type;
        waterType = habitat;
    }
 
    public String toString() {
        return "\n\nFish \ntype:" + type +
               ", \nwaterType:" + waterType +
                super.toString() + "";
    }
}

2k1Toaster · 05-10-2007, 05:32 PM

edit: nevermind, at first glance I thought polymorphic, but I see now it isnt... I hate polymorphic substitution.

Ok well just put it in a while loop, with the break statement being a switch.

Code:

import java.io.*;

public class PetTest {
    public static void main(String[] args) {
         while(true) {
    	 try {
            BufferedReader br = new BufferedReader(
                                new InputStreamReader(System.in));
			System.out.println("------------------------------------------------");
            System.out.println("Please Choose From the Following:\n 1. Dogs " +
                               "2. Cats 3. Fish 4. Birds  5. VIEW ALL ");
			System.out.println("------------------------------------------------");
            String line = br.readLine().trim();
            int selection = Integer.parseInt(line);
            String s = "";
            switch(selection) {
                case 1:
                    s = "dog";
                    break;
                case 2:
                    s = "cat";
                    break;
                case 3:
                    s = "bird";
                    break;
                case 4:
                    s = "fish";
                    break;
                case 5:
                    s = "View All";
                    break;
                case 6:
                    s = "EXIT";
                    break;
                default:
                    s = "unexected selection";
            }
            System.out.println("selection = " + s);
            Dog dog = null ;
            Cat cat = null;
            Fish fish = null;
            Bird bird = null;
            if(s.equalsIgnoreCase("exit"))
            {
                  break;
            }
            if(s.equalsIgnoreCase("dog") || s.equalsIgnoreCase("View All"))
            {
            dog = new Dog(4, 12, 50.00, "Terrier", Dog.DRY);
            System.out.println("\ndog = " + dog);
            }
            
            if(s.equalsIgnoreCase("cat") || s.equalsIgnoreCase("View All")){
            cat = new Cat(5, 5, 25.00, "Persian", Cat.CLAWED);
            System.out.println("\ncat = " + cat);}
            
             if(s.equalsIgnoreCase("bird")|| s.equalsIgnoreCase("View All")){
            bird = new Bird(3, 2, 5.00, "Canary", "USA");
            System.out.println("\nbird = " + bird);}
            
             if(s.equalsIgnoreCase("fish")|| s.equalsIgnoreCase("View All")){
             fish = new Fish(1, 1, 10.00, "Angel", Fish.SALT);
            System.out.println("\nfish = " + fish);
            }
            }
            br.close();
        } catch(IOException e) {
            System.out.println("Read error: " + e.getMessage());
        }
 
        
        
    }
}
 
class Pet {
    int age;
    double weight;
    double price;
 
    protected Pet(int age, double weight, double price) {
        this.age = age;
        this.weight = weight;
        this.price = price;
    }
 
    public String toString() {
        //String name = getClass().getName();
        return ", \nage:" + age +
               ", \nweight:" + weight +
               ", \nprice:" + price;
    }
}
 
class Dog extends Pet {
    String breed;
    String foodType;
    final static String CANNED = "canned food";
    final static String DRY    = "dry food";
 
    public Dog(int age, double weight, double price,
               String breed, String foodType) {
        super(age, weight, price);
        this.breed = breed;
        this.foodType = foodType;
    }
 
    public String toString() {
        return "\n\nDog \nbreed:" + breed +
               ", \nfoodType:" + foodType + super.toString() + "";
    }
}
 
class Cat extends Pet {
    String breed;
    String clawStatus;
    final static String CLAWED   = "has claws";
    final static String DECLAWED = "de-clawed";
 
    public Cat(int age, double weight, double price,
               String breed, String clawStatus) {
        super(age, weight, price);
        this.breed = breed;
        this.clawStatus = clawStatus;
    }
 
    public String toString() {
        return "\n\nCat \nbreed:" + breed +
               ", \nclawStatus:" + clawStatus +
                super.toString() + "";
    }
}
 
class Bird extends Pet {
    String type;
    String nationalOrigin;
 
    public Bird(int age, double weight, double price,
                String type, String origin) {
        super(age, weight, price);
        this.type = type;
        nationalOrigin = origin;
    }
 
    public String toString() {
        return "\n\nBird \ntype:" + type +
               ", \nnationalOrigin:" + nationalOrigin +
                super.toString() + "";
    }
}
 
class Fish extends Pet {
    String type;
    String waterType;
    final static String FRESH = "freah water";
    final static String SALT  = "salt water";
 
    public Fish(int age, double weight, double price,
                String type, String habitat) {
        super(age, weight, price);
        this.type = type;
        waterType = habitat;
    }
 
    public String toString() {
        return "\n\nFish \ntype:" + type +
               ", \nwaterType:" + waterType +
                super.toString() + "";
    }
}

turbocad6 · 05-10-2007, 05:43 PM

gotta love the badger

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