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Submitted by: M S Sridhar(sridhar.ms@gmail.com)

Monday Oct 1st 2018 by M S Sridhar

Language: Java, Expertise: Intermediate - See how to use the disjoint method in Collections to find if the given lists are completely disjointed.

See how to use the disjoint method in Collections to find if the given lists are completely disjointed:

import java.util.*;

public class UsingDisjointInCollections {
   
   public static void main(String args[])
   {
      UsingDisjointInCollections usingDisjointInCollections = new UsingDisjointInCollections();
      usingDisjointInCollections.proceed();
   }
   
   private void proceed()
   {
      //Creating 2 lists to compare
      List firstLst = new ArrayList(3);
      List secondList = new ArrayList(3);

      //Populating the first list with some elements
      firstLst.add("It");
      firstLst.add("is");
      firstLst.add("raining");

      //Populating the second list with some elements      
      secondList.add("Its cool");
      secondList.add("weather");
      secondList.add("after");
      secondList.add("raining");      

      //Using disjoint, checking both the lists
      boolean areListsDisjoint = Collections.disjoint(firstLst, secondList);

      System.out.println("Given lists are disjoint: "+areListsDisjoint);    
   }    
}

/*

Expected output:

[root@mypc]# java UsingDisjointInCollections
Given lists are disjoint: false

*/ 
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