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Tip of the Day
Language: Java
Expertise: Intermediate
Apr 12, 2004

WEBINAR:

On-Demand

Application Security Testing: An Integral Part of DevOps


Check for Duplicates in an ArrayList

This is a simple method to check for duplicates in an ArrayList:


checkDuplicate : Method

public static boolean checkDuplicate(ArrayList list) {
 HashSet set = new HashSet();
 for (int i = 0; i < list.size(); i++) {
  boolean val = set.add(list.get(i));
  if (val == false) {
  	return val;
  }
 }
 return true;
}
Vijayanandraj Amaladoss
 
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