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Java - Code Samples

 Sample 1. Create an UnmodifiableMultiSet ( Read only set allowing multiple values ) using Apache Commons

MultiSet<String> multiSet = new HashMultiSet(); 
multiSet.add("Albama");
multiSet.add("Albama");
multiSet.add("Albama");

System.out.println(multiSet); // Prints [Albama:3]
      
UnmodifiableMultiSet<String> unmodifiablemultiSet = (UnmodifiableMultiSet<String>) MultiSetUtils.unmodifiableMultiSet(multiSet);

unmodifiablemultiSet.add("Albama"); // throws java.lang.UnsupportedOperationException

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