![]() This is because Scala’s syntax is a bit trickier and there is less code to write in Scala. Last but not least, Scala is a bit more difficult to learn. This means the code works in older and newer Java versions without issues. Scala is not a backward-compatible language, which means the code only runs successfully in the current version. Although nesting code can make it more clear, doing it badly does the opposite. Scala is sometimes harder to understand than Java because the code uses nested structures (functions inside functions). You can also create completely new custom operators, which isn’t possible in Java. Scala also supports operator overloading, which means you can give a new meaning to any operator. In Java, there are no lazy evaluation options. Scala supports lazy evaluation, which means variables don’t require computation before someone calls them, which saves memory. Unlike Java, Scala forces you to write code in an immutable style, which is useful if you want to use concurrency and parallelism features. Scala’s design makes it easy to express programming patterns in a typesafe and concise way. With Scala, you can write clearer and more concise code using the type inference, function passing and other features to make the code less verbose. More From Artturi Jalli What Is the Symbol in Python and How Do I Use It? You can also access versatile Java libraries using Scala. Scala language runs using the JVM (Java virtual machine) runtime, which makes it a high-performance language. Static typing helps prevent bugs in complicated programs because static typing expresses programming patterns in an understandable way. This is all possible because Scala is a unique combination of functional and object-oriented programming paradigms. Not only are Scala developers in high demand, but developers can use Scala to build scalable applications for data processing, distributed computing and web development. Scala is not a top 10 popular programming language but it’s still worth learning. Try watching this video on or enable JavaScript if it is disabled in your browser. ![]() Maybe your IDE can write code templates for you, but that doesn't make it any easier to read.Unable to execute JavaScript. Unfortunately, Java doesn't even have macros to do this part for you. That's at the cost of more boilerplate, but it's the lesser of evils. So the wiser Java programmers will wrap all checked exceptions into a runtime exception, effectively making exceptions unchecked. Or worse, while developing you can't be bothered and just catch and silently swallow them all. So you just say throws Exception, which defeats the whole feature, but is more pointless boilerplate in an already tediously verbose language. When you're calling APIs five levels deep and your method's throws clause balloons to 80 exceptions you might see, it gets kind of ridiculous. And for what? Sure, they look good on paper, but checked exceptions are useless in the real world. The more rules unrelated to the actual task that you pile onto the beginner, the slower he gets. ![]() Poor support for sum-types and pattern matching leads to overuse of inheritance for dynamic dispatch and chains of nested conditionalsĮspecially for beginners, this can make reading Java code feel overwhelming most Java courses tell students to simply copy, paste, and ignore a significant percentage of the code until they've learned enough to understand what it means.įor experienced programmers, this makes Java feel tedious, especially without an IDE, and actively discourages some solutions and some forms of abstraction.Ĭhecked exceptions add significantly to the cognitive load of the beginner.It is statically typed without type inference, with a culture that promotes long class names.portable Java code lacks anonymous functions, and continues to lack good support for partial application, compensating instead with verbose design patterns, kludges like anonymous inner classes, or just inline code.Java has a getter/setter culture, but without native syntax support.Exceptions are everywhere, particularly since all values are nullable.Reading a line from input requires instatiating 5 objects in the right order.A Hello world needs package, class, static method and the actual printf.
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