How to remove duplicate elements from list in java|How do I remove repeated elements from ArrayList?
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In this quick tutorial we're going to show how to clean up the duplicate elements from a List – first using plain Java, Set, and finally a Java 8 Lambda-based solution.
Approach:
Get the ArrayList with duplicate values.
Create another ArrayList.
Traverse through the first ArrayList and store the first appearance of each element into the second ArrayList using contains() method.
The second ArrayList contains the elements with duplicates removed.
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