In java, collection interview questions are mostly asked by the interviewers. Here is the list of mostly asked collections interview questions with answers.1) What is the difference between ArrayList and Vector?No.ArrayListVector 1) ArrayList is not synchronized. Vector is synchronized....
81Struts Framework provides the functionality to validate the form data. It can be use to validate the data on the users browser as well as on the server side. Struts Framework emits the java scripts and it can be used validate the form data on the client browser. Server side validation o...
ArrayList, LinkedList, HashSet, HashMap (keys & values) and Hashtable (values only) all allow NULL. The two exceptions are TreeMap and TreeSet. 10) What happens if we add the same key with different values to a HashMap? The new value replaces the old one because HashMap doesn't all...
publicstaticvoidmain(String [] args) { ArrayList<Point> points =newArrayList<Point> (); points.add(newPoint(0,0)); points.add(newPoint(1,1)); points.add(newPoint(3,10)); points.add(newPoint(8,7)); points.add(newPoint(11,8)); points.add(newPoint(12,1)); ArrayList<Point> resu...
Example:public class Fruits{public static void main (String [ ] args){ArrayList <String>names=new ArrayList <String>();names.add (“apple”);names.add (“cherry”);names.add (“kiwi”);names.add (“banana”);names.add (“cherry”);System.out.println (names);}}Output: ...
ArrayBuffer is something similar to Java’s ArrayList. What is case class? What is case object? What are the Advantages of case class? Case class is a class which is defined with “case class” keywords. Case object is an object which is defined with “case object” keywords. Because of...
Java Collection Framework interviewquestions and answerscontains questions from popular Java collection classes e.g.HashMap,ArrayList,HashSet,ConcurrentHashMapand legacy collection classes like Vector andHashtable. Interview questions from Java Collection framework is one of the most asked concept on anyCor...
- Chosing the right type of collection based on the need, for example if size is fixed, we might want to use Array over ArrayList. If we have to iterate over the Map in order of insertion, we need to use LinkedHashMap. If we don't want duplicates, we should use Set. - Some ...
The level of questions asked on the topic of Data Structures And Algorithms totally depends on the company for which you are applying.Array An Array consists of a group of elements of the same data type. It is stored contiguously in memory and by using its' index, you can find the ...
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