Wanted but not invoked: employeeService.saveEmployee( com.howtodoinjava.powermock.examples.model.Employee@7808b9 ); -> at com.howtodoinjava.powermock.examples.test.EmployeeControllerTestOne.verifyMethodInvokationTest(EmployeeControllerTestOne.java:47) Actually, there were zero interactions with this moc...
In Java, an iteratoris an interface and is implemented by all collection classes. The Java collections framework is a group of classes and interfaces that implement reusable collection of data structures. The iterator method returns an object that implements the Iterator interface. An object of an ...
import java.util.HashMap; import java.util.Iterator; public class HashMapStructure { /** * @author Arpit Mandliya */ public static void main(String[] args) { Country india=new Country("India",1000); Country japan=new Country("Japan",10000); Country france=new Country("France",2000); ...
Let’s see a example for how to use Hashtable in java programs. import java.util.Hashtable; import java.util.Iterator; public class HashtableExample { public static void main(String[] args) { //1. Create Hashtable Hashtable<Integer, String> hashtable = new Hashtable<>(); //2. ...
import java.io.*; import java.util.*; public class CrunchifyFindMaxOccurrence { /** * @author Crunchify.com * In Java How to Find Maximum Occurrence of Words from Text File? */ public static void main(String[] args) throws FileNotFoundException, IOException { // File: An abstract rep...
1.3.How HashMap Works in Java HashMapis probably the most discussed and controversial topic if you are appearing in any junior or mid-level interview. You can face any interview question related toHashMapif you know how hashmap works internally? This post will help you in answering some good...
Using ListIterator class Using removeAll() method Using Java 8 Stream to filter List items Conclusion Introduction In this tutorial, you will learn how to remove element from Arraylist in java while iterating using different implementations provided by Java. It is necessary to understand the right ...
Javacollection frameworkis pretty amazing. Collection class consists exclusively ofstatic methodsthat operate on or return collections. Those operations works on list of different collections like List, Set, etc. In this tutorial we will go over list of CollectionOperationswhich we will perform on Lis...
security.Principal; import java.util.ArrayList; import java.util.Iterator; import org.apache.catalina.Group; import org.apache.catalina.Role; import org.apache.catalina.User; import org.apache.catalina.UserDatabase; import org.apache.catalina.realm.GenericPrincipal; import org.apache.catalina.realm....
in// CopyOnWriteArrayListcowal.add(10);cowal.add(20);cowal.add(30);cowal.add(40);cowal.add(50);// Display ArrayListSystem.out.print("Display CopyOnWriteArrayList : "+" ");System.out.println(cowal);// Iterate ArrayList using iterator()Iterator<Integer>itr=cowal.iterator();System.out.println...