Swipewire Technologies Automation Engineer Interview Questions and Answers

Q1. What is string contant pool?
Ans. 
String constant pool is a memory area in Java where unique string literals are stored to optimize memory usage.
• String constant pool is a part of the Java heap memory.

• It stores unique string literals to avoid duplicate storage.

• Strings created using double quotes are stored in the string constant pool.

• Strings created using new keyword are stored in the heap memory.
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Q2. Can we create object for abstract classes and interfaces?
Ans. 
Yes, we can create object for abstract classes and interfaces in Java.
• Objects cannot be created for abstract classes directly, but can be created for concrete subclasses that extend the abstract class.

• Interfaces cannot be instantiated, but objects can be created for classes that implement the interface.

• Example: Abstract class Animal { abstract void makeSound(); } Class Dog extends Animal { void makeSound() { System.out...read more
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Q3. What is the keyword used in interface if we want concreate method?
Ans. 
The keyword used in interface for concrete method is 'default'.
• The 'default' keyword is used in interfaces to provide a default implementation for a method.

• It allows interfaces to have concrete methods without requiring implementing classes to override them.

• Example: 'default void methodName() { // method implementation }'
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It was sort of assessment which consists of technical questions and coding round

Q1. It was of more around the technical subjects and college projects
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Q1. It consists of all the technical questions and coding questions , projects etc
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