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Java coding is quicker than Scala coding.

Also, Scala code is shorter, but not as much as they promise.

Read here. (thasnks to @jodastephen)

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Comments

"Subjects reported an average of four years of Java experience and no Scala experience."   "Initially, all subjects received the same training in programming with Java and Scala, which took four weeks."   "a Java pretest classified 7 subjects as experts and 6 as beginners. A Scala pretest classified 7 subjects as experts, and 6 as beginners"   So they took people, gave them 4 weeks of training which was so good that it made them experts? Then the study compared 4 years of java experiecne with 4 weeks of Scala and the results were that they were more proficient in Java? This is fud.   BTW, two of the authors is from Oracle

it's actually good news for Scala - shorter code, less error prone, same performance, etc. developers with 4 years of Scala experience will win the time-to-market challenge as well. this study is a bit ridiculous (unless i'm missing something here)...