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Question 1

What is a Singleton?

Answer 1

Singleton is a DESIGN PATTERN

It isn’t a keyword or syntax in java, it’s a way to construct your code to achieve a greater effect. In short, it’s a strategy not a keyword.

Question 2

What is the Factory Design Pattern

Answer 2

Another design pattern you should be aware of is the “Factory Design Pattern”. The purpose of the factory design pattern is to produce other objects

a Factory can ALSO keep track of upkeep variables and statistics variables for the target class

Question 3

What is Logging?

Answer 3

In Java, logging is an important feature that helps developers to trace out the errors. We use log4j for our purposes

Question 4

What is a usecase for log4j?

Answer 4

try {
			//stuff
		}catch(Exception myExcep) {
			loggy.error("I think my catch block just triggered", myExcep);
		}

Question 5

What is Automated Testing

Answer 5

Testing allowing us to test different aspects of our code base.

There a lot of different kinds of testing in Java;

Smell Testing, Security Testing, Integrated Testing, Unit Testing

Question 6

What is JUnit?

Answer 6

JUnit is a unit testing framework for the Java programming language.