Groovy…
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is an agile and dynamic language for the Java Virtual Machine 
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builds upon the strengths of Java but has additional power features inspired by languages like Python, Ruby and Smalltalk 
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makes modern programming features available to Java developers with almost-zero learning curve 
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provides the ability to statically type check and statically compile your code for robustness and performance 
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supports Domain-Specific Languages and other compact syntax so your code becomes easy to read and maintain 
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makes writing shell and build scripts easy with its powerful processing primitives, OO abilities and an Ant DSL 
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increases developer productivity by reducing scaffolding code when developing web, GUI, database or console applications 
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simplifies testing by supporting unit testing and mocking out-of-the-box 
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seamlessly integrates with all existing Java classes and libraries 
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compiles straight to Java bytecode so you can use it anywhere you can use Java