JVM 动态脚本语言，Groovy 2.4.2/2.3.11 发布
Groovy是一种基于JVM的敏捷开发语言，它结合了Python、Ruby和Smalltalk的许多强大的特性。
Groovy 主要的特点包括：
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是一个基于Java虚拟机的敏捷动态语言。
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构建在强大的Java语言之上 并添加了从Python，Ruby和Smalltalk等语言中学到的诸多特征。
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为Java开发者提供了现代最流行的编程语言特性，而且学习成本很低（几乎为零）。
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支持DSL（Domain Specific Languages领域定义语言）和其它简洁的语法，让你的代码变得易于阅读和维护。
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Goovy拥有处理原生类型，面向对象以及一个Ant DSL，使得创建Shell Scripts变的非常简单。
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在开发Web，GUI，数据库或控制台程序时 通过减少框架性代码 大大提高了开发者的效率。
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支持单元测试和模拟（对象），可以简化测试。
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无缝集成 所有已经存在的 Java对象和类库。
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直接编译成Java字节码，这样可以在任何使用Java的地方 使用Groovy。
更新内容如下：
Bug 修复
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[GROOVY-3519] - Compilation error incorrectly thrown for covariant return types when original method is private
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[GROOVY-7008] - JsonOutput / Groovy JSON Builder do not escape special characters in map keys
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[GROOVY-7034] - groovydoc for package-info embeds doc within the <h2> tag -- creates malformed HTML
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[GROOVY-7045] - commands return value false is ignored
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[GROOVY-7047] - Static inner class crashes compiler when it references parent's this
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[GROOVY-7182] - Static type error when using generic methods and Closures as parameters
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[GROOVY-7191] - CompileStatic Will Not Allow Instance Method In Trait To Call Static Method
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[GROOVY-7211] - @CompileStatic: A method which has default value parameter and generic return type will cause type checking error
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[GROOVY-7242] - calling trait method inside closure causes compiler error when CompileStatic is used
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[GROOVY-7281] - IOGroovyMethods.withStream should use the stream type as the ClosureParam, not simply InputStream
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[GROOVY-7290] - Shell Does Not Accept Triple Double Quote
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[GROOVY-7299] - Cannot create two lists of length 1000
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[GROOVY-7308] - Change In MetaClass Behavior
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[GROOVY-7309] - Incorrect args processing in GroovyShell.run(Reader, String, List)
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[GROOVY-7310] - getGeneratedMethods is missing from the type checking DSL
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[GROOVY-7322] - Problem With Static Trait Methods
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[GROOVY-7324] - Incomplete generic type inference for list.property notation
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[GROOVY-7327] - TypeChecking Error when combining generic method and Java Enum
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[GROOVY-7332] - Groovysh help and doc commands should use groovy-lang.org instead of groovy.codehaus.org
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[GROOVY-7333] - Incorrect inferred type in instanceof check of array
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[GROOVY-7339] - DocGenerator doesn't understand generics placeholders
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[GROOVY-7343] - Access to java.lang.Object is forbidden
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[GROOVY-7344] - JsonSlurper parses badly formatted numbers.
改进
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[GROOVY-4136] - gapi document generation ignores access modifiers set on groovydoc
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[GROOVY-7257] - groovydoc's help option is misleading
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[GROOVY-7317] - Add primitive array sum() and sum(initialValue)
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[GROOVY-7326] - Add FileTreeBuilder
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[GROOVY-7347] - Optimize initialization of char constants
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[GROOVY-7348] - Primitive char comparisons are not optimized
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[GROOVY-7349] - Optimize foreach style loops on arrays
同时还发布了 Groovy 2.3.11 版本，此版本是个维护版本，主要是 bug 修复：
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[GROOVY-7045] - commands return value false is ignored
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[GROOVY-7047] - Static inner class crashes compiler when it references parent's this
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[GROOVY-7182] - Static type error when using generic methods and Closures as parameters
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[GROOVY-7211] - @CompileStatic: A method which has default value parameter and generic return type will cause type checking error
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[GROOVY-7308] - Change In MetaClass Behavior
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[GROOVY-7310] - getGeneratedMethods is missing from the type checking DSL
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[GROOVY-7324] - Incomplete generic type inference for list.property notation
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[GROOVY-7332] - Groovysh help and doc commands should use groovy-lang.org instead of groovy.codehaus.org
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[GROOVY-7333] - Incorrect inferred type in instanceof check of array
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[GROOVY-7343] - Access to java.lang.Object is forbidden
现已提供下载：