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Interview Questions and Answers - Order By Newest

Q3021. What is xssf and hssf ?

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Q3022. Can we have two interfaces having method with same name and arguments?

Core Java

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Q3023. If you are asked to test an application without any documentation, What type of testing will you do ?

Testing

Ans. White Box Testing
Unit Testing
Ad Hoc Testing

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Q3024. how hashmap work? Write a program that uses map interface ?

Core Java

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Q3025. Sort an Employee Object based on Name or Age

Database

Ans. Use Comparable or Comparator interface

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Q3026. What are the challenges you have faced while working on Dojo ?

Dojo

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Q3027. Which of the following front end frameworks , Angular , React, Vue , Ext JS and Dojo; you like the most and why ?

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Q3028. What do you think is the best advantage of using Dojo over other front end frameworks ?

Dojo

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Q3029. What is cluster ?

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Q3030. What is the concept of hibernate versioning ?

Hibernate

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Q3031. If we have a return statement inside the finally block, Then what will happen ?

Core Java

Ans. Returning from inside a finally block will cause exceptions to be lost. A return statement inside a finally block will cause any exception that might be thrown in the try block to be discarded.

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Q3032. Can we have more than two constructors in a class ?

Core Java

Ans. Yes, through constructor overloading

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Q3033. What is something faulty about java ?

Core Java

Ans. Not purely object oriented Language.

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Q3034. What is object slicing ?

C++

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Q3035. What are meta classes in Java ?

Core Java

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Q3036. What are the limitations of Java ?

General

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Q3037. What are the distributed caches ?

Server

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Q3038. Create DB schema for Employee, Department.

Database

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Q3039. Differences between MongoDB and mysql.

Database

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Q3040. Can we have 2 styling classes with a single div element ? Which class will take precedence in case of conflict in such case ?

CSS

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Q3041. How do you debug Javascript code ?

Javascript

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Q3042. Difference between kill -9 and kill -15 ?

Unix

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Q3043. Where will you configure database details in tomcat server ?

Tomcat

Ans. Add a file META-INF/context.xml into the root of your web application folder, which defines database connection detail :

File : META-INF/context.xml

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Q3044. How elements are passed to the server in case of Get and Post request ?

Web Service

Ans. In case of Get request, form data / values are sent within url whereas these are sent as part of request body in case of Post.

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Q3045. Have you ever faced any problem because of PrintWriter buffer and autoflush mechanism ? How did you got rid of it ?

Core Java

Ans. Yes , we faced trouble once wherein we were trying to set certain elements to the PrintWriter. As in some cases the PrintWriter held too much information and hence it would get flushed before we could append those elements.

We disabled auto flushing and provided our own explicit flushing.

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Q3046. Can we disable auto flushing for PrintWriter ?

Core Java

Ans. Yes

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Q3047. Can we increase the buffer size while working with Buffered Streams ? How ?

Core Java

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Q3048. What is the WIP branch in SCM ?

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Q3049. What are the 22 possible values of x where x== -x (true) ?

Core Java

Ans. byte x = 0;
short x = 0;
char x = 0;
int x = 0;
int x = Integer.MIN_VALUE;
float x = 0.0f;
float x = -0.0f;
long x = 0;
long x = Long.MIN_VALUE;
double x = 0.0;
double x = -0.0;
Byte x = 0;
Short x = 0;
Character x = 0;
Integer x = 0;
Integer x = Integer.MIN_VALUE;
Float x = 0.0f;
Float x = -0.0f;
Long x = 0L;
Long x = Long.MIN_VALUE;
Double x = 0.0;
Double x = -0.0;

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Q3050. What is Docker ?

Docker

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