Question

I have a question in how to create a method. For example there is a LinkedList of Objects, say and Object is

public class Dog;

private String name;

private int age

I want my method to take a dog age, and return the position (int) of the dog with that age has in the list

example;

//takes a dog age and returns position in the list, if no age in the list of dogs with age, method returns -1

public int getDogPos (int age) {...}

in java code please

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
_________________

// Dog.java

public class Dog {
   private String name;
   private int age;

   public Dog(String name, int age) {
       this.name = name;
       this.age = age;
   }

   public String getName() {
       return name;
   }

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

   public int getAge() {
       return age;
   }

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

   @Override
   public String toString() {
       return "Dog : Name=" + name + ", Age=" + age;
   }

}

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// LinkedListDemo.java

import java.util.LinkedList;

public class LinkedListDemo {
   static LinkedList<Dog> ll = new LinkedList<Dog>();

   public static void main(String[] args) {

       ll.add(new Dog("max", 5));
       ll.add(new Dog("tuffy", 7));
       ll.add(new Dog("luci", 3));
       ll.add(new Dog("lucky", 4));
       ll.add(new Dog("micky", 2));

       System.out.println(ll);

       int age = 4;
       int indx = getDogPos(age);
       System.out.println("The dog with age " + age + " is found at position "+ indx);

   }

   private static int getDogPos(int age) {
       for (int i = 0; i < ll.size(); i++) {
           if (age == ll.get(i).getAge()) {
               return i;
           }
       }
       return -1;
   }

}
______________________________

Output:

[Dog : Name=max, Age=5, Dog : Name=tuffy, Age=7, Dog : Name=luci, Age=3, Dog : Name=lucky, Age=4, Dog : Name=micky, Age=2]
The dog with age 4 is found at position 3

_______________Could you plz rate me well.Thank You