Thread: loop through linked list of objects and their fields

Below I have got a class with two int variables from which I have created a number of objects which I have stored in the linked list. Now I want to loop through each object and compare THEIR FIELDS from the class with other int values. In other words I want to loop through the fields of the objects and not the objects themselves. Any help?

Here's the code

import java.util.*;
import java.io.*;
 
 
public class Obj 
{
    int n;
    int c;
 
   public Obj (int nn)
{
    n = nn;
    c = 0;  
}
 
 
   public static void main(String argv[]) throws IOException
   {
 
      LinkedList list = new LinkedList();   
 
      int i = 7;
      Obj element = new Obj(i);
      // I may add further objects..
 
     list.add(element);
 
     // then I want to iterate through the linked list of objects and get each object
     // and compare its n or c field values with something else
 
     // It should sth like the below which I found in the web but I don;t get how it works
 
    for(Obj elementf : list) 
    {
       // Process each object inside of object here.
     }
 
    }

To obtain the fields from two objects in an ArrayList so that they can be compared:

// get field1 from one object
myArrayList.get( index1 ).getField1();

// get field 1 from another object in the ArrayList
myArrayList.get( index2 ).getField1();

The results of those statements can be compared directly or assigned to variables and then the variables can be compared. You haven't described the purpose of the comparison, but if you're trying to determine if two objects are equal based on the values of their respective fields, you should look at writing an equals() method. Or you might also research the Comparable interface, how it works, and either use that or write something similar.