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Interview Questions and Answers - Order By Newest

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

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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Q3051. Details of networking apis supported by java.

Ans. retrofit 2, volly and OkHttp

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Q3052. What are different awt constructs ?

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Q3053. Combine and join integer and string list to single list and sort.

Core Java

Ans. Object[] combined = new Object[first.length second.length];
System.arraycopy(first, 0, combined, 0, first.length);
System.arraycopy(second, 0, combined, first.length, second.length);

-- OR --

Object[] combined = Stream.concat(Arrays.stream(first), Arrays.stream(second)).toArray();

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Q3054. Difference between interface and inheritance

Core Java

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Q3055. C dynamic memory questions

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Q3056. Write program to control traffic in a parking lot.

Design

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Q3057. What is stereotype annotation ?

Spring

Ans. These annotations are used to create Spring beans automatically in the application context. The main stereotype annotation is @Component . @Controller: Which is used to create Spring beans at the controller layer. The stereotype annotations in spring are @Component, @Service, @Repository and @Controller

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Q3058. what is dispatcher servlet@componentScan use ?

Spring Framework

Ans. @ComponentScan in a Spring Application.

With Spring, we use the @ComponentScan annotation along with the @Configuration annotation to specify the packages that we want to be scanned. @ComponentScan without arguments tells Spring to scan the current package and all of its sub-packages.

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Q3059. Write program to recursively iterate through map ?

Core Java

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Q3060. Give specific situation about when to go for constructor based injection and setter based injection in spring.

Spring

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