iFour Technolab Java Developer Interview Questions and Answers

Q1. Tell me about your self
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Q2. First of all thank you for giving this opportunity. My self madhumitha I am from narasaraopet I completed by btech in krishnaveni engineering college for womens,kesanupalli in the year 2022 I completed my...read more
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Explain about one topic

Q1. A technical round round is a job interview round that tests the candidates technical skills with respect to the concerned job requirements
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Q1. About our family
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Q1. Managerial round can cover a diverse range of discussion topics.
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Q1. Selection process is to select right candidates with the required qualifications and capabilities to fill the vacancy in the organisation
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Q1. Tell me about yourself
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Encapsulation, abstraction, interface

Q1. Encapsulation constructor method overloading
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Q2. Interface abstracts
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Q1. Why chose this company
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Q2. Why should i hire you
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Q3. How much salary you are expecting
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Q1. How can you create immutable class in Java?
Ans. 
Immutable class in Java cannot be modified after creation, ensuring data integrity.
• Make the class final so it cannot be extended

• Make all fields private and final so they cannot be modified

• Do not provide setter methods, only getter methods to access the fields

• If the class contains mutable objects, make sure to return a deep copy of them in getter methods
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Q2. 1 : Declare the class as final. 2 : Make all fields private and final. 3 : Provide no setter methods.
Ans. 
The question is asking to create a class with certain restrictions like being final, having private and final fields, and no setter methods.
• Declare the class as final to prevent it from being subclassed.

• Make all fields private and final to ensure encapsulation and immutability.

• Provide no setter methods to enforce read-only access to the fields.
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First I will give the altitude test

My coding knowledge is good and my coding speed is fast

Q1. What is the purpose of static keyword in Java?
Ans. 
The static keyword in Java is used to create class-level variables and methods that can be accessed without creating an instance of the class.
• Static variables are shared among all instances of a class.

• Static methods can be called without creating an instance of the class.

• Static blocks are used to initialize static variables.

• Static keyword can also be used to create static nested classes.
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Q2. The static keyword is used to create class-level variable and methods ............etc.
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Logical Reasoning, Verbal ability

Q1. Technical Questions base on languages
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Q1. Document Verification, About yourself and family
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