Remove duplicates from list java

Java remove duplicates

import java.util.*;

public class RemoveDuplicatesFromArrayList {

    public static void main(String[] args) {
        List<Integer> numbers = Arrays.asList(1,2,2,2,3,5);

        System.out.println(numbers);

        Set<Integer> hashSet = new LinkedHashSet(numbers);
        ArrayList<Integer> removedDuplicates = new ArrayList(hashSet);

        System.out.println(removedDuplicates);
    }
}

Source: devqa.io

Remove duplicates from list java

 ArrayList<Object> withDuplicateValues;
 HashSet<Object> withUniqueValue = new HashSet<>(withDuplicateValues);
 
 withDuplicateValues.clear();
 withDuplicateValues.addAll(withUniqueValue);

Java remove duplicates

public static <T> ArrayList<T> removeDuplicates(ArrayList<T> list){
  Set<T> set = new LinkedHashSet<>(list);
  return new ArrayList<T>(set);
}

Compare two lists and remove duplicates java

listA.removeAll(new HashSet(listB));

Source: stackoverflow.com

Array remove duplicate in java

List<Integer>numbers = Arrays.asList(1,2,2,2,3,5); // [1, 2, 3, 5]
System.out.println(numbers);

Set<Integer> hashSet = new LinkedHashSet(numbers);
ArrayList<Integer> removedDuplicates = new ArrayList(hashSet);
System.out.println(removedDuplicates); // [1, 2, 3, 5]

-1

Similar codes

0 vote201 views2 answers
Simple Dockerfile
Java
1 vote219 views2 answers
How to generate random id in java
Java
0 vote219 views2 answers
Turn on device location android programmatically
Java
1 vote181 views1 answer
Passing array by reference java
Java
0 vote202 views1 answer
Add a value to a list java in java hashmap
Java
0 vote209 views2 answers
How to upload image from android app to server
Java
3 votes230 views1 answer
The shrinker may have failed to optimize the Java bytecode. To disable the shrinker, pass the `--no-shrink` flag to this command.
Java
89 votes205 views4 answers
Java split on {
Java
3 votes208 views1 answer
Writing to a text file java
Java
0 vote212 views1 answer
Java console readline null pointer exception
Java