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Tip of the Day
Language: Java
Expertise: Intermediate
Mar 27, 2001

Making a Collection Read-Only


The Collections class provides static APIs to generate a read-only or unmodifiable collection, list, set, or map from the specified entity. For instance, if you are sure that the ArrayList you've made should not be modified, you can generate a read-only list from it by using the following code:
 
  ArrayList list = new ArrayList();
  list.add(
Shantanu Garg
 
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