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.
Here is a complete code example of How to sort ArrayList in Java; in this Sorting, we have usedComparablemethod ofStringfor sortingStringon their natural order, You can also useComparatorin place of Comparable to sort String on any other order than natural ordering like in reverse order by ...
ArrayList is the most popular implementation of the List interface from Java's Collection framework, but it allows duplicates. Though there is another collection called Set which is primarily designed to store unique elements, there are situations when you receive aListlikeArrayListin your code and ...
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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. ...
The following program demonstrates the forEachRemaining () method to traverse ArrayList. import java.util.*; class Main{ public static void main(String args[]){ //create a list and initiliaze it List<String> colors_list=new ArrayList<String>(); ...
// Temporary array to store unique elements int temp[*size]; int j = 0; // Traverse the array and store unique elements in the temporary array for (int i = 0; i < *size - 1; i++) { if (arr[i] != arr[i + 1]) { ...
Step 2− Use the forEach() method to traverse through the hashtable. Step 4− Get the key and value from the hashtable. Step 5− Print the union territory and name. Example Open Compiler importjava.util.Hashtable;publicclassTLP{publicstaticvoidmain(String[]args){Hashtable<String,String...