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Groovygroovy is not a unique script language compatible with JRE. Python, Ruby and Smalltalk are successfully ported to three scripting languages on the Java platform. For some developers, this brings problems: Why is another language? After all, many of us have combined Java code with Jython or Jruby to quickly develop applications, why do you want to learn another language? Answer is that you don't have to learn a new language to encode from Groovy. Groovy differs from other JRE compatible scripts that its grammar and reuse Java libraries. Jython and Jruby share their predecessor (are Python and Ruby), and Groovy feels like a Java language, but the limit should be much less. Closed Package Collection Import ... AS ... Constructor Properties Settings Similar to JavaScript Regular Expression with Perl Perside Beauty PERL Default Enter $ _ Error $! Array @Array Association% MAP Very Introduction, Freedom: ABC = "Hello, How Are you. "; S / HELLO / HAS WORD with HELLO /; # match, s = HAS Word with Hello; @AS = ...; for Each (array) {print; # _ (-e Filename) {...} else {DIE "file does not exist: $!";} The interpretation of the language is generally limited than the compilation type. to be continued...