Interview Questions Answers in VB.NET, C, C Sharp, OOAD, Advanced Java, Core Java

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Question { 1927 }

What is a static variable?

Answer

To share a variable or method within a class, use the static keyword. Static variables are those that, once defined, are created and shared by all objects at the class level in a single copy.

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Question { 1816 }

what are bit fields in c?

Answer

Bitfields allow allocation of a specific number of bits to structure members.

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Question { 1376 }

What is the difference between struct and class in c#?

Answer

• struct: Members are public by default.
• class: Members are private by default.

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Question { 1363 }

What is inheritance in java?

Answer

In Java, inheritance refers to the idea that a class's properties can be passed down to another class. It facilitates code reuse and builds connections between various classes.

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Question { 2056 }

What is a class loader?

Answer

The classloader is a component of the Java Runtime Environment (JRE) that is produced or executed when the bytecode is running.Java classes and interfaces must be dynamically loaded into the JVM (Java Virtual Machine) using the class file classloader. The Java runtime system does not require knowledge of files and file systems due to classloaders.

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Question { 2056 }

What is a class loader?

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Question { 2056 }

What is a class loader?

Answer

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Question { 1674 }

Why packages are used?

Answer

Java uses packages to manage access, avoid naming conflicts, and facilitate finding and using classes, interfaces, and other components.

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Question { 1674 }

Why packages are used?

Answer

Java uses packages to manage access, avoid naming conflicts, and facilitate finding and using classes, interfaces, and other components.

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Question { 1674 }

Why packages are used?

Answer

Java uses packages to manage access, avoid naming conflicts, and facilitate finding and using classes, interfaces, and other components.

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Question { 2335 }

When a byte datatype is used?

Answer

An 8-bit signed two-complement integer is called a byte. Bytes support a minimum value of -128 and a maximum value of 127. It is employed when memory conservation is required and the required range of numbers is -128 to 127.

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Question { 2335 }

When a byte datatype is used?

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Question { 2335 }

When a byte datatype is used?

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Question { 1683 }

What is a pointer in c?

Answer

A pointer is a variable that stores the memory address of another variable.

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Question { 1969 }

What is the difference between malloc() and calloc()?

Answer

 malloc(): Allocates a single block of memory without initializing it.
 calloc(): Allocates multiple blocks of memory and initializes them to zero.

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