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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10.  
  11.     public static void main(String[] args) {
  12.         // TODO Auto-generated method stub
  13.         Map<Integer, String> masterMap = new HashMap<Integer, String>();
  14.         masterMap.put(1537, "OK");
  15.         masterMap.put(1538, "OK");
  16.         masterMap.put(4003, "OK");
  17.  
  18.         Set<Integer> selectedSet = new HashSet<Integer>();
  19.         selectedSet.add(Integer.parseInt("4003"));
  20.         boolean compareMapAndSet = checkSubSet(masterMap.keySet(), selectedSet);
  21.         System.out.println(compareMapAndSet);
  22.     }
  23.  
  24.     private static boolean checkSubSet(Set<Integer> keySet, Set<Integer> selectedSet) {
  25.         for (Integer integer : selectedSet) {
  26.             if (!keySet.contains(integer)) {
  27.                 return false;
  28.             }
  29.         }
  30.         return true;
  31.     }
  32. }
Success #stdin #stdout 0.09s 320576KB
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Standard input is empty
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true
https://ideone.com/AmndYL
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

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