Why is Scala Faster than Java?

Why is Scala faster than Java? Scala is faster because it can utilize multi-core
architecture. You get four times faster when you can use all four cores simultaneously. I fail to see how that makes Scala faster,
unless you are running it on a super-computer. CPUs are adding capacity by adding more cores,
AKA computer brains, over trying to increase CPU cycles. So that’s why they talk about a dual core
or four core CPUs in the latest computer. Concurrent functions on multiple cores is
better than trying to over-clock existing CPUs and risk overheating them. I do not think concurrency is the only reason,
though. I’ve heard Scala runs faster even on older machines. Scala’s syntax and vocabulary is better. How so? It went to school? Scala was designed to streamline object oriented
coding. Scala code is less verbose compared to a Java code. And like reading off an index card instead
of the whole book, the code runs faster because there is less to run through. But you lose
developer efficiency because you have to reinvent the wheel relative to working with Java libraries. Scala can use Java libraries, so you benefit
from Java’s huge code libraries. And you lose out on the JVM. There are new
languages written that use the JVM because it is so good. Scala was written to be a replacement to Java,
while still using the powerful Java Virtual Machine. Using existing modules and the JVM with less
code, you end up speeding up both development and coding. That’s why Scala is faster than Java almost
across the board. Why then is Scala not used more often? It is a new language, so not a lot of programmers
know it. And because languages like CoffeeScript and Lua appear and disappear, that is slowing
its adoption. At some point, it ought to just die. You can still find NASA servers running LISP,
and nuclear weapon control panels running Basic and Fortran. Java’s going to be around
a long time, if only as it is assimilated into Scala.

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