Scala---001-scala development environment construction and HelloWorld analysis

001-scala development environment Construction and HelloWorld parsing

Scala functional programming and object-oriented language functional programming excel at numerical computing object-oriented organization of large-scale engineering and project and team collaboration Scala will be the next great language? Spark is written in the Scala language, and Hadoop is written in the Java language. Scala development environment JVM-based runtime requires installation of Java Recommendations 7 or 8 note Select the number of matched bits and the Java Configuration environment variable of the system Java_ Add Bin directory in HomePath CLASS_PATHdt.jartools.jar current directoryScalaspark supported version requires 2.10.X2.10.4*.MSI configuration environment variable Scala_homepath Add Bin directory Test open cmd command prompt, view version Java- Versionscalaidea recommended the use of this big data development is a particularly good integration of support on this top sbt,maven especially convenient to share and package Eclipse Beginner Essentials has automatically integrated the Scala plugin HelloWorld program to automatically import related packages, Lib the static object that establishes the Objectscala class by default is static and can automatically prompt for code pass parameters run Configurationarguments (parameter) uses the enhanced for loop variable and does not need to be declared

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Scala---001-scala development environment construction and HelloWorld analysis