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Q2761. 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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Q2762. Can we have more than two constructors in a class ?

Core Java

Ans. Yes, through constructor overloading

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Q2763. What is something faulty about java ?

Core Java

Ans. Not purely object oriented Language.

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Q2764. What are meta classes in Java ?

Core Java

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Q2765. What are the limitations of Java ?

General

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Q2766. What are the distributed caches ?

Server

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Q2767. Create DB schema for Employee, Department.

Database

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Q2768. Differences between MongoDB and mysql.

Database

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Q2769. How do you debug Javascript code ?

Javascript

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Q2770. 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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Q2771. 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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Q2772. Can we disable auto flushing for PrintWriter ?

Core Java

Ans. Yes

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Q2773. Can we increase the buffer size while working with Buffered Streams ? How ?

Core Java

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Q2774. 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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Q2775. Details of networking apis supported by java.

Ans. retrofit 2, volly and OkHttp

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Q2776. What are different awt constructs ?

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Q2777. 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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Q2778. Difference between interface and inheritance

Core Java

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Q2779. C dynamic memory questions

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Q2780. Write program to control traffic in a parking lot.

Design

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Q2781. 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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Q2782. 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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Q2783. Write program to recursively iterate through map ?

Core Java

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Q2784. Give specific situation about when to go for constructor based injection and setter based injection in spring.

Spring

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Q2785. Write SQL query to join 2 tables ?

SQL

Ans. Select * from table1 join Select * from table2

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Q2786. Difference between Query param and path param ?

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Q2787. How to build a blocking queue ?

Data Structure

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Q2788. Can you give me a use case where you utilized serialization in your project code?

Core Java

Ans. we use serialization when we send response to client in JSON format.(the process of converting model object into json is nothing but serialization

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Q2789. Linked List related questions.

Data Structure

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Q2790. SQL Questions.

Database

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