How to count the number of occurrences of an element in a List

0 votes
I have an Arraylist and I want to count the number of occurrences of an element in that arraylist. How to do this?
Aug 21, 2018 in Java by Daisy
• 8,110 points
3,985 views

1 answer to this question.

0 votes

We can use the static frequency() method.

int occurrences = Collections.frequency(animals, "bat");
answered Aug 21, 2018 by sharth
• 3,350 points

Related Questions In Java

0 votes
1 answer

How do I count the number of occurrences of a char in a String?

My 'idiomatic one-liner' for this is: int count ...READ MORE

answered Dec 30, 2020 in Java by Gitika
• 65,910 points
579 views
0 votes
1 answer

How to get the number of digits in an int?

You can find out the length of ...READ MORE

answered May 14, 2018 in Java by Akrati
• 3,170 points
302 views
0 votes
6 answers

How can I separate the digits of an int number in Java?

You can also have a look here: To ...READ MORE

answered Dec 9, 2020 in Java by Roshni
• 10,480 points
77,007 views
+1 vote
3 answers

How to convert a List to an Array in Java?

Either: Foo[] array = list.toArray(new Foo[list.size()]); or: Foo[] array = ...READ MORE

answered Aug 7, 2018 in Java by Akrati
• 3,170 points
258 views
0 votes
1 answer

Remove objects from an array in Java?

We can use external libraries: org.apache.commons.lang.ArrayUtils.remove(java.lang.Object[] array, int ...READ MORE

answered Jun 26, 2018 in Java by scarlett
• 1,290 points
306 views
0 votes
2 answers

what is the best way to convert an ArrayList to a String

You could probably use the Joiner class ...READ MORE

answered Aug 19, 2019 in Java by Sirajul
• 59,070 points
284 views
0 votes
2 answers

Remove duplicate elements from an ArrayList in Java

List<String> al = new ArrayList<>(); // add elements ...READ MORE

answered Jul 26, 2018 in Java by Sushmita
• 6,900 points
621 views
0 votes
1 answer

Sorting an ArrayList in Java

You can easily do this by simply ...READ MORE

answered May 4, 2018 in Java by geek.erkami
• 2,680 points
706 views
0 votes
2 answers

How can I get the filenames of all files in a folder which may or may not contain duplicates

List<String> results = new ArrayList<String>(); File[] files = ...READ MORE

answered Sep 12, 2018 in Java by Sushmita
• 6,900 points
919 views
0 votes
2 answers

How can I convert a String variable to a primitive int in Java

 Here are two ways illustrating this: Integer x ...READ MORE

answered Aug 20, 2019 in Java by Sirajul
• 59,070 points
769 views