ArrayList clone() method in Java with Examples
The Java.util.ArrayList.clone() method is used to create a shallow copy of the mentioned array list. It just creates a copy of the list. Syntax: ArrayList.clone()… Read More »
Tag Archives: Java-ArrayList
ArrayList iterator() method in Java with Examples
The iterator() method of ArrayList class in Java Collection Framework is used to get an iterator over the elements in this list in proper sequence.… Read More »
Ceiling in right side for every element in an array
Given an array of integers, find the closest greater element for every element. If there is no greater element then print -1 Examples: Input :… Read More »
ArrayList vs. HashMap in Java
ArrayList is a part of collection framework and is present in java.util package. It provides us dynamic arrays in Java. Though, it may be slower… Read More »
Remove all occurrences of an element from Array in Java
Given an array and a key, the task is to remove all occurrences of the specified key from the array in Java. Examples: Input: array… Read More »
Difference between ArrayList and HashSet in Java
Here are couple of differences between ArrayList and HashSet. Inheritance: Implementation: Implementation : ArrayList implements List interface while HashSet implements Set interface in Java. Internal… Read More »
Get first and last elements from ArrayList in Java
Given an array list, find first and last elements of it. Input : aList = {10, 30, 20, 14, 2} Output : First = 10,… Read More »
Reverse an array in Java
Reversing an array in java can be done in three simple methods. Examples: Input : 1, 2, 3, 4, 5 Output :5, 4, 3, 2,… Read More »
Split a list into two halves in Java
Given a list, we need to split into two news lists in Java. Input : list = {1, 2, 3, 4, 5, 6} Output :… Read More »
How to Remove Duplicates from ArrayList in Java
Given an ArrayList with duplicate values, the task is to remove the duplicate values from this ArrayList in Java. Examples: Input: List = [1, 10,… Read More »
Difference between length of Array and size of ArrayList in Java
Array has length property which provides the length of the Array or Array object. It is the total space allocated in memory during the initialization… Read More »
How to get ArrayList from Stream in Java 8
Given a Stream, the task is to convert this Stream into ArrayList in Java 8. Examples: Input: Stream: [1, 2, 3, 4, 5] Output: ArrayList:… Read More »
Convert an ArrayList of String to a String array in Java
Given an ArrayList of String, the task is to convert the ArrayList to String array in java. Examples: Input: ArrayList = [ “Geeks”, “for”, “Geeks”… Read More »
How to make an ArrayList read only in Java
Given an ArrayList, the task is to make this ArrayList read-only in Java. Examples: Input: ArrayList: [1, 2, 3, 4, 5] Output: Read-only ArrayList: [1,… Read More »
How to sort an ArrayList in Ascending Order in Java
Given an unsorted ArrayList, the task is to sort this ArrayList in ascending order in Java. Examples: Input: Unsorted ArrayList: [Geeks, For, ForGeeks, GeeksForGeeks, A… Read More »