Kumar Classes Maths Teacher Interview Questions and Answers

Q1. Q. What are abstrat class, interface?
Ans. 
Abstract class is a class that cannot be instantiated and interface is a blueprint of a class.
• Abstract class can have both abstract and non-abstract methods while interface can only have abstract methods.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract class can have constructors while interface cannot.

• Example of abstract class: Animal (cannot be instantiated) and Dog (inh...read more
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Q2. Why Java does not support multiple inheritance?
Ans. 
Java does not support multiple inheritance to avoid the diamond problem and maintain simplicity.
• Multiple inheritance can lead to the diamond problem where a class inherits from two classes with a common parent.

• This can cause ambiguity and conflicts in method and variable resolution.

• Java supports multiple interface inheritance to achieve similar functionality.

• Maintaining simplicity and avoiding complexity is a core prin
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Q3. What is chained Exception?
Ans. 
Chained Exception is an exception that is caused by another exception.
• It is a way of propagating exceptions through layers of code.

• It helps in identifying the root cause of an exception.

• It can be created by passing the original exception as a parameter to a new exception.

• It can be caught and handled at any level of the code.

• Example: SQLException is caused by a network error, which is caused by a firewall issue.
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Q4. What is the exception hirerchy?
Ans. 
The exception hierarchy is the order in which exceptions are caught and handled in a program.
• Exceptions are caught and handled in a specific order, with more specific exceptions being caught before more general ones.

• The hierarchy typically starts with the most specific exceptions and ends with the most general ones.

• For example, in Java, the hierarchy starts with checked exceptions, followed by unchecked exceptions, and
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It's very good to development to tha company

Thank to job for give tha job from help for the poor people

Aptitude test is development tha company and tha customer service

678+ 812+ 981 = 2471 as on same

If A=5, B=10 &C=15, then JOB=135