// ListIterator - traverse a list of elements in either forward or backward order // An iterator for lists that allows the programmer to traverse the list in either direction, modify the list during iteration, // and obtain the iterator's current position in the list. System.out.println("...
In this example, you can see we have created an ArrayList and added numbers into it, all prime numbers. We added '7' twice, so that it become duplicate. Now we print the ArrayList and you can see that it contains number 7 twice. After that we created aLinkedHashSetfrom ourArrayList, ...
In this tutorial, we will learn how to convert an Array to a List in Java. To convert an array to a list we have three methods.
How do I obtain elements in an ArrayList using indexes? How do I convert a map into a JSON string? How do I obtain the class name of an object? How do I delete an element from a record? How do I convert a JSON object into a HashMap? How do I convert an ArrayBuffer to...
Reversing strings in Java using an ArrayList object is another method to reverse a string. Have a look at the below example to understand it better.import java.util.ArrayList; public class StringReversal { public static void main(String[] args) { String original = "Intellipaat"; String ...
How to loop or traverse List in Java Difference between HashMap and ConcurrentHashMap in Java Difference between TreeMap and TreeSet in Java Difference between TreeSet and HashSet in Java Difference between HashMap and ArrayList in Java
How do I obtain elements in an ArrayList using indexes? How do I convert a map into a JSON string? How do I obtain the class name of an object? How do I delete an element from a record? How do I convert a JSON object into a HashMap? How do I convert an ArrayBuffer to...
// Function to remove duplicates from an array in-place int removeDuplicates(int arr[], int n) { if (n == 0 || n == 1) return n; // Initialize index to keep track of the non-duplicate elements int index = 0; // Traverse the array ...
Here thenamerefers to the name we are searching for in the given list ofcustomers. This method returns the firstCustomerobject in the list with a matchingname, ornullif no suchCustomerexists. 3.4. Looping With anIterator Iteratoris another way that we can traverse a list of items. ...
Files.walkFileTree(file.toPath(), new SimpleFileVisitor<>() { @Override public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) { System.out.println(file); return FileVisitResult.CONTINUE; } }); } The example uses an overloadedFiles.walkFileTreemethod to traverse a directory rec...