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Q3321. What are the benefits of Java over other Programming Languages ?

Ans. 1. JVM that makes it platform independent and facilitates portability.
2. Garbage Collector that protects from Memory Leaks.
3. Only usage of references and not pointer arithmetic and hence protects the application from memory issues like dangling pointers, memory leaks etc.
4. Support for OOPs that makes application development and maintenance easy.
5. Facilitates library development through use of interface / abstract classes.
6. Facilitates creation of scalable applications.
7. Huge repository of libraries and pool of people with java skill.

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Q3322. Design pattern used in struts.

Ans. Struts controller uses the Command design pattern and the action classes use the Adapter design pattern. The process() method of the RequestProcessor uses the Template method design pattern.

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Q3323. What will you do if your build fails and you need to fix it in an hour ?

Build Management

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Q3324. What is the purpose of Spring inheritance ?

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Q3325. What are the building blocks of Angular Apps ?

Ans. modules, components, templates, metadata, data binding, directives, services, and dependency injection

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Q3326. What are the things that an angular component holds ?

Ans. Data , HTML and Logic

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Q3327. What is the need of having multiple modules in angular ?

Ans. It makes the application more modular and easy to manage.

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Q3328. How to add a component in Angular ?

Ans. 1. Create a component
2. Register it with a module
3. Add an element in HTML markup

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Q3329. Is it required to tie a component to a module ?

Ans. Yes, We need to have a component tied to a module for it to work. If we don't want to create a new module , we can just tie it to default "app.module"

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Q3330. What is the selector and template in a component ?

Ans. Selector specifies the name which is to be used to refer to the component whereas template specifies the html that needs to be rendered.

So selector specifies the reference name whereas template specifies the template or html to be rendered.

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Q3331. What are the different ways we can specify the selector for the component ?

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Q3332. How dependency injection in angular helps with loose coupling in angular ?

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Q3333. What are the spec.ts files in angular ?

Ans. The spec files are unit tests for your source files. The convention for Angular applications is to have a .spec.ts file for each .ts file. They are run using the Jasmine javascript test framework through the Karma test runner

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Q3334. What are abservables in angular ?

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Q3335. what is strict mode in javascript ? How is it used ?

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Q3336. Can we apply strict mode to a function ?

Ans. Yes

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Q3337. Design Parking Lot.

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Q3338. how did you handled your clients requests in your project ?

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Q3339. String processing in Java

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Q3340. What is the main difference between unique key and primary key ?

Ans. Primary key will not accept NULL values whereas Unique key can accept one NULL value.

A table can have only primary key whereas there can be multiple unique key on a table.

A Clustered index automatically created when a primary key is defined whereas Unique key generates the non-clustered index.

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Q3341. What are various design frameworks for Banking profile ?

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Q3342. Is Object Oriented programming a Design pattern ?

Ans. No It's a programming paradigm.

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Q3343. Which file holds the dependent package information ?

Ans. package.json

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Q3344. Have you ever faced any problem due to package version incompatibility in angular ? How did you fix it ?

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Q3345. Difference between ViewChild and ContentChild.

Ans. Any directive, component, and element which is part of component template is accessed as ViewChild. Whereas, any element or component which is projected inside is accessed as ContentChild.

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Q3346. Which change detection strategy do you use in your application and Why ?

Ans. We use ChangeDetectionStrategy.Push

As the application grows bigger , The default change detection strategy could become a performance overhead and hence should be avoided.

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Q3347. What are the different conditions that triggers view update in case of push ChangeDetectionStrategy ?

Ans. 1. Any change in Input
2. Any even originating from the component or it's child components
3. Explicit trigger

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Q3348. What is a component decorator ?

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Q3349. What is interpolation in Angular ?

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Q3350. Can we use interpolation with all data types ?

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