Java program to remove nulls from a List Container
List is an ordered collection of objects which allows to store duplicate values or null values, in the insertion order. So it is very important… Read More »
Tag Archives: Java-ArrayList
Remove elements from a List that satisfy given predicate in Java
Below are the methods to efficiently remove elements from a List satisfying a Predicate condition: p ==> Predicate, specifying the condition l ==> List, from… Read More »
ArrayList spliterator() method in Java
The spliterator() method of ArrayList returns a Spliterator of the same elements as ArrayList but created Spliterator is late-binding and fail-fast. A late-binding Spliterator binds… Read More »
ArrayList removeIf() method in Java
The removeIf() method of ArrayList is used to remove all of the elements of this ArrayList that satisfies a given predicate filter which is passed… Read More »
ArrayList forEach() method in Java
The forEach() method of ArrayList used to perform the certain operation for each element in ArrayList. This method traverses each element of the Iterable of… Read More »
Java Collection| Difference between Synchronized ArrayList and CopyOnWriteArrayList
As the ArrayList is not synchronized, If multiple threads try to modify an ArrayList at the same time, then the final outcome will be non-deterministic.… Read More »
Java ConcurrentHashMap | clear()
Prerequisite : ConcurrentHashmap Java clear() method The java.util.concurrentHashMap.clear() method is used to clear the mapping. It is used to remove the mapping from ConcurrentHashMap. Syntax:… Read More »
Reverse an ArrayList in Java
Assuming you have gone through arraylist in java and know about arraylist. This post contains different examples for reversing an arraylist which are given below:… Read More »
Array to ArrayList Conversion in Java
An Array is a collection of elements which can be of either primitive datatypes or objects. Arrays in Java are static in nature. ArrayLists, on… Read More »
Java Lambda Expression with Collections
In this article Lambda Expression with Collections are discussed with examples of sorting different collections like ArrayList, TreeSet, TreeMap, etc. Sorting Collections with Comparator (or… Read More »
ArrayList of ArrayList in Java
We have discussed that an array of ArrayList is not possible without warning. A better idea is to use ArrayList of ArrayList. // Java code… Read More »
Array of ArrayList in Java
We often come across 2D arrays where most of the part in the array is empty. Since space is a huge problem, we try different… Read More »
Print all possible ways to convert one string into another string | Edit-Distance
Prerequisite: Dynamic Programming | Set 5 (Edit Distance) Given two strings str1 and str2, the task is to print the all possible ways to convert… Read More »
ArrayList retainAll() method in Java
The Java.util.ArrayList.retainAll() method is used to remove all the array list’s elements that are not contained in the specified collection or retains all matching elements… Read More »
ArrayList clear() in Java with examples
The clear() method is used to remove all the elements from a list. The list will be empty after this call returns. Syntax : clear()… Read More »