l.removeAll(Collections.singleton("first"));
Answer from mikeslattery on Stack OverflowHow to do in Java
howtodoinjava.com › home › collections framework › java arraylist › java arraylist removeall(): remove all occurrences of element
Java ArrayList removeAll(): Remove All Occurrences of Element
August 7, 2023 - ArrayList removeAll() removes all of matching elements that are contained in the specified collection. It removes all occurances of matching elements.
Java: Need help to remove all instances of objects with a certain field from an arraylist while using a for loop.
What happens to an element at a given index in an arraylist if you remove an entry? What happens when you delete an element, but there's another one that meets the criteria right after the current index? More on reddit.com
How does an ArrayList remove an element from an array?
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Java Practice It | Exercise 15.13: removeAll | ArrayList, ...
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Remove elements from an arraylist in Java - YouTube
How to do in Java
howtodoinjava.com › home › collections framework › java arraylist › remove element from arraylist in java: remove() and removeif()
Remove Element from ArrayList in Java: remove() and removeIf()
September 18, 2018 - A record gets one from the compiler, which compares all components. ... List<Guest> table = new ArrayList<>(List.of(new Guest("Mia", 4), new Guest("Sam", 7))); boolean left = table.remove(new Guest("Sam", 7)); // true, table = [Guest[name=Mia, seat=4]] A List<Integer> has both overloads, and Java picks remove(int index) for an int argument, because it does not need autoboxing.
Baeldung
baeldung.com › home › java › java list › remove all occurrences of a specific value from a list
Remove All Occurrences of a Specific Value from a List | Baeldung
June 27, 2025 - In Java, it’s straightforward to remove a specific value from a List using List.remove(). However, efficiently removing all occurrences of a value is much harder. In this tutorial, we’ll see multiple solutions to this problem, describing the pros and cons. For the sake of readability, we use a custom list(int…) method in the tests, which returns an ArrayList containing the elements we passed.
GeeksforGeeks
geeksforgeeks.org › java › arraylist-removeall-method-in-java-with-examples
ArrayList removeAll() Method in Java with Examples - GeeksforGeeks
July 23, 2026 - The removeAll() method of the ArrayList class removes all elements from an ArrayList that are also present in a specified collection. It compares each element of the list with the elements of the given collection and removes every matching element.
Coderanch
coderanch.com › t › 693995 › java › Remove-occurrences-element-ArrayList
Remove all occurrences of an element from ArrayList (Beginning Java forum at Coderanch)
I thought you wanted to remove all occurrences, in which case a look at the Java8+ version of Collection, where you will find three removeXXX() methods. ... If you want to remove duplicate number from a given ArrayList, you can apply following methods: Use Set data structure - It is created ...
Scaler
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removeAll() Method in Java - Scaler Topics
May 5, 2024 - The removeAll() method in java removes the occurrence of all the elements in the ArrayList that are present in the specified collection.
Programiz
programiz.com › java-programming › library › arraylist › removeall
Java ArrayList removeAll()
Here, we are passing the ArrayList languages as an argument of the removeAll() method. Hence, the method removes all the elements from the arraylist.
How to do in Java
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Java ArrayList remove(): Remove a Single Element from List with Examples - HowToDoInJava
August 7, 2023 - ArrayList<String> alphabets = new ... all occurrences of any element from the list using remove() method. We can use removeAll() method for this purpose. Java program to remove all the occurrences of an object from the ...
Codecademy
codecademy.com › docs › java › arraylist › .removeall()
Java | ArrayList | .removeAll() | Codecademy
May 21, 2024 - In the example below, two ArrayList instances, fallMonths and monthsToRemove, are created to hold String type elements. Elements are added to the fallMonths using the [.add()] (https://www.codecademy.com/resources/docs/java/array-list/add) method. Then, monthsToRemove is utilized to remove the months - August and September from fallMonths using .removeAll(). Finally, all elements are removed from fallMonths by invoking .removeAll() with a reference to itself.
Reddit
reddit.com › r/learnprogramming › java: need help to remove all instances of objects with a certain field from an arraylist while using a for loop.
r/learnprogramming on Reddit: Java: Need help to remove all instances of objects with a certain field from an arraylist while using a for loop.
October 13, 2021 -
Doing a school project ( First semester ) and i need to iterate through an arraylist and remove all objects from it with a certain field. As it is right now the method only removes the first instance that meets the if condition that triggers the removal. Here is my code:
for (int i = 0; i < array.size(); i++) { if (customerId.equals(array.get(i).customerID)) { array.remove(i); } else if (i == array.size()-1) { System.out.println("Invalid customer ID. Try again"); invalidInput = true;
Top answer 1 of 3
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What happens to an element at a given index in an arraylist if you remove an entry? What happens when you delete an element, but there's another one that meets the criteria right after the current index?
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I tend not to modify stuff in place if I can help it. If I need to remove elements from a data structure, I create a new data structure and only copy the elements I want to keep into that structure.
Techie Delight
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Remove all occurrences of an element from a List in Java | Techie Delight
July 7, 2026 - With Java 8, we can use the removeIf() method to remove all elements from the collection that satisfies the supplied predicate. ... The remove() method removes the first occurrence of the provided element from the list and returns true if the ...
GeeksforGeeks
geeksforgeeks.org › java › remove-all-elements-from-the-arraylist-in-java
Remove all elements from the ArrayList in Java - GeeksforGeeks
July 11, 2025 - ArrayList: [Geeks, for, Geeks, ... the above approach: ... // Java Program for remove all elements ArrayList // Using removeAll() method // import ArrayList package import java.util.ArrayList; public class GFG { // main method ...
Vultr
docs.vultr.com › java › standard library › java › util › arraylist › removeall()
Java ArrayList removeAll() - Remove Specified Elements
September 27, 2024 - The removeAll() method is part of the Collection interface and is implemented by the ArrayList class among others. It removes all elements from the list that are also contained in the specified collection passed to the method.