Technology Questions

Q:

What is Spring IoC container ?

Answer

The Spring IoC is responsible for creating the objects,managing them (with dependency injection (DI)), wiring them together, configuring them, as also managing their complete lifecycle.

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Subject: Java Exam Prep: Bank Exams
Job Role: Analyst , Project Manager , Software Architect

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Q:

What are the different types of errors in php?

Answer

Notices: These are trivial, non-critical errors that PHP encounters while executing a script - for example, accessing a variable that has not yet been defined. By default, such errors are not displayed to the user at all - although, as you will see, you can change this default behaviour.

Warnings: These are more serious errors - for example, attempting to include() a file which does not exist. By default, these errors are displayed to the user, but they do not result in script termination.

Fatal errors: These are critical errors - for example, instantiating an object of a non-existent class, or calling a non-existent function. These errors cause the immediate termination of the script, and PHP’s default behaviour is to display them to the user when they take place.

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Subject: PHP

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Q:

What are instance variables?

Answer Instance variables are those which are defined at the class level. Instance variables need not be initialized before using them as they are automatically initialized to their default values.
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Subject: Java

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Q:

If super class ref is pointing sub class object then by using super class ref is it possible to call sub class newly defined method?

Answer

yes if the method is ovreriding method


no if the method is not overriding method

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Subject: Java

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Q:

How can you prevent a class from overriding in C# and Visual Basic?

Answer

You can prevent a class from overriding in C# by using the sealed keyword; whereas, the NotInheritable keyword is used to prevent a class from overriding in Visual Basic.

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Subject: .NET

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Q:

How does an application run in isolation from other applications?

Answer

Each application gets its own Linux user ID and virtual machine which means that the application code runs in isolation from other applications.

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Q:

What is a synonym? What are its various types?

Answer

A synonym can be called as an alias for a table, view, sequence or program unit. It is basically of two types:
- Private - Only the owner can access it.
- Public - Can be accessed by any database user.

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Subject: Oracle

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Q:

What are layer objects and what do they represent?

Answer

Layer objects are data objects which represent visual content. Layer objects are used by views to render their content. Custom layer objects can also be added to the interface to implement complex animations and other types of sophisticated visual effects.

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