From Java to Scala

From Java to Scala

From Java to Scala

Comments Off on From Java to Scala

Java is a hugely popular language, but it’s old. It has issues which everyone knows about but has to live with. That’s why Scala has been growing in popularity. It uses the JVM, and you can mix Java with Scala code.

While many things in the Scala language are familiar to Java programmers, there are also many differences, and it takes some effort to learn the language. The reward is worth the effort, though. Scala’s features allow code which is easier to maintain and has fewer bugs.

Scala provides better ways to do many things, but the workarounds which Java requires become habits. To gain the full benefits of the Scala language, a programmer needs to learn some new ways of thinking.

A fully object-oriented language

In Scala, everything is an object. Numbers are objects, avoiding the clumsiness of boxing. Booleans are objects. Even functions are objects.

Scala classes can’t have static members. This avoids mixing instance-based and static variables and functions. Instead, it allows creation of an object, which is a singleton class declared and instantiated in one step. A class can have a companion object of the same name to provide static functionality.

Options and matches

The Option container and the match expression are two of Scala’s most powerful features, but they give Java developers some trouble. An Option wraps an object or has the type None, which indicates no value. The match expression is like Java’s switch statement but more powerful; it can match classes and regular expressions as well as values. Together, they provide a better way to handle the absence of a value than Java’s null.

Java programmers spend much of their time making sure a NullPointerException can’t happen. Scala’s use of Option and match is a less error-prone way to check for a “no result” value. It’s necessary to unwrap an Option before using it, and the match expression makes it easy to check an Option’s type.

These two features, particularly in combination, take a while to understand, but they yield more solid code.

Functional programming

As mentioned before, functions are objects and can be passed through variables and return values. This allows cleaner callbacks than in Java. Even with the Lambda capability, functional programming in Java is clumsy. Functional programming has grown in popularity in recent years, especially because its availability in JavaScript has shown its usefulness.

To keep up with new concepts in programming, developers have to learn new languages. The Scala language can be challenging at times, but it builds on familiar Java concepts and straightens out their inconsistencies. It’s a logical next step for Java programmers.

 

Danny White

Related Posts

How You Can Save For Your Next Trip By Investing in Cryptocurrency

Comments Off on How You Can Save For Your Next Trip By Investing in Cryptocurrency

Purchase New Church Pulpits This Year To Transform Church’s Interior

Comments Off on Purchase New Church Pulpits This Year To Transform Church’s Interior

Why You Should Get the Buick Cascada Freeman, NJ

Comments Off on Why You Should Get the Buick Cascada Freeman, NJ

Benefits of an LED High Bay Light Fixture

Comments Off on Benefits of an LED High Bay Light Fixture

Advantage of low carb diet

Comments Off on Advantage of low carb diet

6 Signs Your Roof Needs Replacement

Comments Off on 6 Signs Your Roof Needs Replacement

How To Repair A Heater In Annapolis

Comments Off on How To Repair A Heater In Annapolis

The 5 Best Car Maintenance Tips

Comments Off on The 5 Best Car Maintenance Tips

3 Big Mistakes to Avoid When After Being Arrested for DUI

Comments Off on 3 Big Mistakes to Avoid When After Being Arrested for DUI

What makes Peter Loftin so great?

Comments Off on What makes Peter Loftin so great?

How Artificial Intelligence is aiding Fintechs offering instant ssloans in India

Comments Off on How Artificial Intelligence is aiding Fintechs offering instant ssloans in India

How to Keep Yourself Safe from Truck Accidents

Comments Off on How to Keep Yourself Safe from Truck Accidents

Create Account



Log In Your Account