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 Q1141. Is it necessary to register controller command in CMDREG table ? IBM WCS
Ans. It is not necessary to enter data in the CMDREG table, but an entry should be made in the struts-config.xml. The controller command can be registered in the CMDREG table by xml and SQL query.

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   Like         Discuss         Correct / Improve     controller commands  CMDREG

 Q1142. Describe Catalog subsystem and the tables used in WCS for managing this ?IBM WCS
Ans. The catalog subsystem or Catalog Management provides online catalog navigation, partitioning, categorization, and associations. In addition, the catalog subsystem includes support for personalized interest lists and custom catalog display pages. The catalog subsystem contains all logic and data relevant to an online catalog, including catalog groups (or categories), catalog entries, and any associations or relationships among them.

Tables used for Catalog subsystem

1. CATENTRY
2. CATENTREL

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   Like         Discuss         Correct / Improve     catalog subsystem

 Q1143. What is cross-selling ?ECommerce
Ans. Selling of Merchandise across stores. For example - Store A selling Store B's merchandise.

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   Like         Discuss         Correct / Improve     cross selling  order management  ecommerce

 Q1144. What is SAR file ?IBM WCS
Ans. Its the Store Archive that holds the store Assets in the compressed form.

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   Like         Discuss         Correct / Improve     SAR file  store archieve

 Q1145. How to enable Cross Site scripting protection in WCS ?IBM WCS
Ans. By specifying XSiteScriptingProtection within wc-server.xml. Prohibited characters and attributes are specified within XSiteScriptingProtection to protect the application from any XSS attach.

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   Like         Discuss         Correct / Improve     Cross site scripting  XSS attack  XSS  XSiteScriptingProtection  wc-server.xml

 Q1146. What is dynacache and role of cachespec.xml in WCS ?IBM WCS
Ans. Dynacache in WCS is the object cache. Instead of creating objects again and again , the store objects are rendered on the basis of matched rules. Caching rules are stored in a configuration file called cachespec.xml.

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   Like         Discuss         Correct / Improve     dynacache  cachespec.xml

 Q1147. Difference between Singleton and Factory Design Pattern ?Design
Ans. Both are creational design patterns but singleton facilitates in creation and reuse of single object whereas Factory deals with creation of multiple objects.

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   Like         Discuss         Correct / Improve     Design pattern  singleton  factory  singleton vs factory     Asked in 4 Companies

 Q1148. What is a Webdriver ?Testing
Ans. Selenium WebDriver is a tool for automating web application testing.It helps in replicating the manual tester behavior like keyboard entry, mouse events etc and then matching the output against the expected.

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   Like         Discuss         Correct / Improve     selenium  webdriver     Asked in 37 Companies

 Q1149. Write a Program to validate an email addressCore Java
Ans. public class Class{
public static void main(String[] args){
String str = "xyz@123.com";

if(!str.contains("@") && !str.contains(".") && (str.indexOf('.') < str.indexOf('@'))){
System.out.println("Not a Valid Email Address");
}
}
}

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   Like         Discuss         Correct / Improve     validate an email address  coding  code     Asked in 3 Companies

 Q1150. Upon compiling the following class, What .class files will get created

public class OuterClass{
class InnerClass{
}
}
Core Java
Ans. OuterClass.class AND OuterClass$InnerClass.class

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   Like         Discuss         Correct / Improve     class files  compilation  compile  inner classes   nested classes

 Q1151. What are the advantages of Spring interceptor over Servlet Filters ?Spring
Ans. Spring Interceptor are Spring beans and hence they can inject other beans and can be used with other Spring frameworks concepts like AOP.

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   Like         Discuss         Correct / Improve     interceptors  servlet filters  spring interceptors vs servlet filters

 Q1152. isnt the use of HashTable and ConcurrentHashMap the same, i.e providing synchronized map collection ?Core Java
Ans. Yes, they both aim at providing synchronized access to the Map collection. The only difference is in their implementation. ConcurrentHashMap came after HashTable and hence technically more efficient as it doesn't lock the complete map while accessing it.

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   Like         Discuss         Correct / Improve     HashTable  ConcurrentHashMap  map  Collections

 Q1153. Difference between concurrentHashMap and HashTable ?Core Java
Ans. HashTable locks the complete collection to provide synchronization whereas ConcurrentHashMap only locks segments to achieve synchronization and hence better efficient and faster.

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   Like         Discuss         Correct / Improve     concurrentHashMap  HashTable  Map  Collections     Asked in 2 Companies

 Q1154. Write a Program to print factorial of a number using recursionCore Java
Ans. public class BuggyBread {
public static void main(String args[]) {
System.out.println(factorial(5));
}

private static int factorial(int number){
if(number == 1){
return 1;
} else {
return number * factorial(number - 1);
}
}
}

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   Like         Discuss         Correct / Improve     recursion     Asked in 25 Companies

 Q1155. Write a Program to print duplicate words in a StringCore Java
Ans. public class BuggyBread {
public static void main(String args[]) {
String str = "we are what we repeatedly Do excellence, then, is not an act but a haBit";
Set<String> words = new HashSet();
for(String word:str.split(" ")){
if(words.contains(word)){
System.out.println(word);
} else {
words.add(word);
}
}
}
}

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   Like         Discuss         Correct / Improve          Asked in 1 Companies

 Q1156. What is a method reference in Java ?Core Java
Ans. Introduced with java 8 , Method References help us to point to methods by their name.

A method references is described using :: symbol

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   Like         Discuss         Correct / Improve     method reference  java 8  lambda expressions

 Q1157. What are the different primitive data types in Java ?Core Java
Ans. boolean
byte
char
double
float
int
long
short
void

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   Like         Discuss         Correct / Improve     data types  primitive data types     Asked in 1 Companies      Basic

 Q1158. What is the difference between circular queue and priority queue ?Data Structures
Ans. https://qr.ae/TWK2Ok

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   Like         Discuss         Correct / Improve     circular queue  priority queue  queue  data structures  collections

 Q1159. Create a Table with 2 Columns and Insert a row into itDatabase
Ans. CREATE TABLE TABLE_NAME (
ID NUMBER PRIMARY KEY,
NAME VARCHAR(50) NOT NULL,
);

INSERT INTO TABLE_NAME(ID, NAME) VALUES(1, "Abc");

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   Like         Discuss         Correct / Improve     ddl  dml  create table  insert records into table     Asked in 1 Companies

 Q1160. Given two files with list of words, write a program to show the common words in both filesCore Java
Ans. import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.io.*;
public class Common {
public static void main(String ar[])throws Exception
   {
      File f=new File("a.txt");
File f1=new File("x.java");
      System.out.println(f.exists());
FileInputStream fin = new FileInputStream(f);
      FileInputStream fin1 = new FileInputStream(f1);

      byte b[]=new byte[10000];
byte b1[]=new byte[10000];
fin.read(b);
fin1.read(b1);
String s1 = new String(b);
String s2 =new String(b1);

String words1[] = s1.trim().split(" ");
String words2[] = s2.trim().split(" ");
Listlist1 = new ArrayList<>(Arrays.asList(words1));
Listlist2 = new ArrayList<>(Arrays.asList(words2));
list1.retainAll(list2);
System.out.println(list1);
}
}

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   Like         Discuss         Correct / Improve     file handling  file io  code  coding     Asked in 1 Companies

 Q1161. Write a Program / Code showing Inheritance and overriddingCore Java
Ans. class A {
public void test() {
System.out.println("Class A Test");
}
}

class B extends A {
public void test() {
System.out.println("Class B Test");
}

public static void main(String[] args){
A a = new B();
a.test(); // will print Class B Test
}
}

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   Like         Discuss         Correct / Improve          Asked in 1 Companies

 Q1162. Write Code showing InheritanceCore Java
Ans. class A {
public void test() {
System.out.println("Class A Test");
}
}

class B extends A {
public void test() {
System.out.println("Class B Test");
}
}

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   Like         Discuss         Correct / Improve          Asked in 1 Companies

 Q1163. Write a Program to print count of each character in a String.Core Java
Ans. public class BuggyBread {
public static void main(String args[]) {
Map<Character, Integer> countMap = new HashMap();
String str = "hello world";
for (char character : str.toCharArray()) {
if (countMap.containsKey(character)) {
countMap.put(character, countMap.get(character) + 1);
} else {
countMap.put(character, 1);
}
}
System.out.println(countMap);
}
}

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   Like         Discuss         Correct / Improve     String  Code  Coding  Character     Asked in 1 Companies

 Q1164. Describe a project that didn't go well and what did you learn from it? General
 This question was recently asked at 'ZE PowerGroup'.This question is still unanswered. Can you please provide an answer.


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   Like         Discuss         Correct / Improve          Asked in 1 Companies

 Q1165. Write a program to print the index of the first non repeated character in a java stringCore Java
Ans. public class BuggyBread1{
public static void main (String args[]) {
   String str = "hheello world";
   char[] charArray = str.toCharArray();
   char selectedChar = 'a';
   for(char char1: charArray){
      if(!str.contains(Character.toString(char1).concat(Character.toString(char1)))){
         selectedChar = char1;
         break;
      }
   }
   System.out.println(str.indexOf(Character.toString(selectedChar)));
}
}

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   Like         Discuss         Correct / Improve     string  code  coding     Asked in 9 Companies

 Q1166. Write a program to print all even numbers first and then all odd numbers till 100. For example the output should be
2
4
6
8
...... 100
and then
1
3
5
7
...... 99

using only 1 for loop ? Is it possible with just one loop ?		Core Java
Ans. Yes , It can be done using single for loop

public class BuggyBread{
public static void main (String args[]) {
   int x = 50;
   for(int i=1;i <= 100;i++){
      if(i<=50){
         System.out.println(i*2);
      } else {
         System.out.println(i-x);
         x = x - 1;
      }
   }
}
}

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   Like         Discuss         Correct / Improve     code  coding     Asked in 1 Companies

 Q1167. Write a program in Java that prints the numbers from 1 to 100. But for multiples of three print Fizz instead of the number and for the multiples of five print Buz. For numbers which are multiples of both three and five print FizzBuzzCore Java
Ans. public class Class{
public static void main(String[] args){
for(int i=1;i<= 100;i++){
if(i%3 == 0){
if(i%5 == 0){
System.out.println("FizzBuzz");
}
System.out.println("Fizz");
} else if(i%5 == 0){
System.out.println("Buzz");
} else {
System.out.println(i);
}

}
}
}

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   Like         Discuss         Correct / Improve     code  coding     Asked in 2 Companies

 Q1168. Write a Program to check if string is a Colidrome ?
(Colidrome is a word that has n alphabets followed by the reverse of the n alphabets, for ex - mallom) 		Core Java
Ans.
public class Class {
   public static void main(String[] args) {
      String str = "mallam";
      String firstHalf = str.substring(0, str.length() / 2);
      String secondHalf = str.substring(str.length() / 2);

      if (firstHalf.equals(new StringBuilder(secondHalf).reverse().toString())) {
         System.out.println("It's a Colidrome");
      } else {
         System.out.println("It's not a Colidrome");
      }
   }
}

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   Like         Discuss         Correct / Improve     Colidrome  String  Code  Coding     Asked in 1 Companies

 Q1169. Write a Program to check number of occurrences of one string within another ? Core Java
Ans. public class Class{
   public static void main(String[] args){
      String string1 = "Hello I am Jack. I live in United States. I live in california state.";

      String string2 = "I live in";

      int startIndex = 0;
      int endIndex = string1.length()-1;

      int countNoOfOccurences = 0;

      String remainingString = string1;

      while(startIndex < endIndex){
         if(remainingString.indexOf(string2) != -1){
            countNoOfOccurences++;
            startIndex = remainingString.indexOf(string2) + string2.length();
            remainingString = remainingString.substring(startIndex);
         } else {
            break;
         }
      }

      System.out.println(countNoOfOccurences);
   }
}

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   Like         Discuss         Correct / Improve     string  code  coding     Asked in 2 Companies

 Q1170. Write a class / program that takes few numbers from the input and then output the average ?Core Java
Ans. public class Class{
   public static void main(String[] args){
      List<Integer> collector = new ArrayList();

      Scanner scanner = new Scanner(System.in);
      int x = scanner.nextInt();
      while(x != 0){
         collector.add(x);
         x = scanner.nextInt();
      }
      System.out.println(collector.stream().collect(Collectors.averagingInt(p->((Integer)p))));
   }
}

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   Like         Discuss         Correct / Improve     coding  code  collector  streams  Collectors.average     Asked in 1 Companies

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