QSpiders Senior Software Engineer Interview Questions and Answers

Q1. How Java Works ?
Ans. 
Java is a high-level programming language that follows the principle of 'write once, run anywhere' using the Java Virtual Machine (JVM).
• Java code is compiled into bytecode, which is then executed by the JVM.

• Java is platform-independent, meaning the same code can run on any device with a JVM.

• Java supports object-oriented programming concepts like classes, objects, and inheritance.

• Java has a rich set of libraries and fra...read more
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Q2. Difference Between Final , Finally , and Finalize in Java .
Ans. 
Final is a keyword used to declare constants, Finally is a block of code that always executes, and Finalize is a method used for cleanup.
• Final is used to declare constants in Java.

• Finally is a block of code that always executes, typically used in try-catch-finally blocks.

• Finalize is a method in Java used for cleanup operations before an object is garbage collected.
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Q3. Tell Me Difference Between Error And Exception and how exception is handled in java ?
Ans. 
Error is a compile-time issue, while exception is a runtime issue. Exceptions are handled using try-catch blocks in Java.
• Error is a compile-time issue, detected by the compiler. Exception is a runtime issue, occurring during program execution.

• Errors are generally caused by the environment in which the application is running, while exceptions are caused by the application itself.

• In Java, exceptions are handled using try...read more
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The first round was aptitude and it has 3 sections

They gave coding regarding java

Q1. Tell about Oops concepts
Ans. 
OOPs concepts are fundamental principles in object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class. Example: class Dog extends Animal.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: private variables and public methods.

• Polymorphism: Ability to present...read more
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Q2. Difference between method overloading and method overriding
Ans. 
Method overloading is having multiple methods in the same class with the same name but different parameters. Method overriding is having a method in a subclass with the same name and parameters as a method in its superclass.
• Method overloading is resolved at compile time based on the method signature, while method overriding is resolved at runtime based on the object type.

• Method overloading is used to provide different ...read more
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Q1. Software knowledge
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Prepare test cases for for winzip

They are asking reasoning questions and related to software analyst.

They testing my patience and Testing my mind thinking power..

Q1. Tell me about yourself.
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Q2. Your strengths and weaknesses.
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Q3. You have to pay money for the training period.
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Q1. The questions are related to Software like Etabs, Revit Architecture and Quantity Survey.
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Q1. The question is about to my Education and strength.
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