Pixel Web Solutions Developer Interview Questions, Process, and Tips

Easy coding interview

Q1. Good technical interview
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Q2. What is JDBC in Java?
Ans. 
JDBC (Java Database Connectivity) is an API that allows Java programs to interact with databases.
• JDBC provides a set of classes and interfaces to connect to and interact with databases.

• It allows developers to write SQL queries, execute them, and process the results.

• JDBC drivers enable communication between Java applications and different types of databases.

• Example: Class.forName("com.mysql.jdbc.Driver"); Connection con...read more
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Q3. What is encapsulation in Java?
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Encapsulation in Java is the concept of bundling data (attributes) and methods (functions) that operate on the data into a single unit (class).
• Encapsulation helps in hiding the internal state of an object and restricting access to it.

• It allows for better control over the data by making it private and providing public methods to access and modify it.

• Example: Creating a class 'Car' with private attributes like 'model' an...read more
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Q4. What is multithreading in Java?
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Multithreading in Java allows multiple threads to execute concurrently within a single program.
• Multithreading improves performance by allowing tasks to run in parallel.

• Each thread has its own stack and program counter, but share the same memory space.

• Java provides built-in support for multithreading through the java.lang.Thread class.

• Example: Creating a new thread by extending the Thread class or implementing the Runna
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Q5. What is inheritance in Java?
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Inheritance in Java allows a class to inherit properties and behaviors from another class.
• Inheritance enables code reusability and promotes a hierarchical relationship between classes.

• Subclasses can access the methods and fields of their superclass.

• Example: class Dog extends Animal, where Dog inherits properties and behaviors from Animal.
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