i am trying to remove the duplicate values from HashMap by the following code but it is thwoing following exception java.util.ConcurrentModificationException how to remove duplicate values ? import java.util.Enumeration; import java.util.HashMap; import java.util.Iterator; import java.util...
The first two examples to solve this deduping problem use specialized Java components and APIs. However, it’s a fun exercise to just use the standard loop function and conditional operations to remove duplicates from a List in Java. This might even be necessary if will require further customiz...
In this tutorial we will go over steps on how to remove duplicates from aCSV fileand any other file. Let’s get started: Step-1. Create fileCrunchifyFindDuplicateCSV.java Step-2. Put below code into file. We are usingBufferedReaderto read files. One by by add lines to HashSet. Hash...
Example 1: Removing duplicates from ArrayList using LinkedHashSet In the following example, we are removing the duplicate elements fromArrayListusingLinkedHashSet. The steps followed in the program are: 1) Copying all the elements of ArrayList to LinkedHashSet.Why we choose LinkedHashSet?Because it...
Java 8 examples to count the duplicates in a stream and remove the duplicates from the stream. We will use a List to provide Stream of items.