Trues Steels Interview Questions and Answers

Java is a high-level programming language known for its portability, security, and versatility.

• Java is platform-independent, meaning it can run on any device with a Java Virtual Machine (JVM).

• Java is secure due to its built-in security features like sandboxing and encryption.

• Java is versatile, used in a wide range of applications from web development to mobile apps.

• Java has a large community and extensive libraries, making development easier and faster.

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

• OOPs allows for the organization of code into reusable components called objects.

• Encapsulation, inheritance, and polymorphism are key principles of OOPs.

• Real-time examples include modeling a car as an object with properties like color and methods like drive().

• OOPs promotes code reusability, modularity, and easier maintenance.

• It helps in better structuring of code and impr...read more

Singleton class ensures only one instance of a class is created.

• Use private constructor to prevent instantiation from outside the class

• Provide a static method to get the instance of the class

• Use a private static variable to hold the instance

Testing scenario for Gmail on different browsers

• Test Gmail on popular browsers like Chrome, Firefox, Safari, and Edge

• Check for compatibility issues and ensure all features work properly

• Test on different operating systems like Windows, macOS, and Linux

• Verify email sending and receiving functionality

• Test login and logout functionality

• Check for responsiveness on different screen sizes

Negative test cases for phone pay app

• Entering invalid phone number

• Entering incorrect OTP

• Trying to make payment without sufficient balance

• Entering invalid bank account details

• Trying to make payment during maintenance hours