Java 版的 Ruby 解释器 JRuby 1.7.14 发布
JRuby1.7.14发布，此版本现已提供下载：
http://www.jruby.org/download
JRuby1.7主要是为了兼容Ruby1.9.3版本，改进记录如下：
解决了30个issues
修复了Jar文件源潜在的内存泄漏问题
因为在Rails应用启动比较慢，所以默认禁用invokedynamic
load/require内部重构和简化
解决了一些兼容性问题
1.7.14修复的bug：
#1923-String#start_with?returnsfalsewhenusinganemptystring #1905-TempfileanddeleteOnExit #1899-Can'tcallstaticmethodonJava8interface #1898-Fixthememoryleakandactuallyclosetheresources. #1889-NPEfromorg.jruby.java.proxies.ArrayJavaProxy.to_a #1888-nativememoryleakwhenreadingfilesfrominsidea.jar #1859-JMXtriestodouble-bindaportwhenusingbundleexec #1858-JRubywithJava84to10timesslowerthanJava7 #1852-JRubyClassloaderseemstohaveaproblemwithfileurlspointingtojar... #1850-embeddedjarsdonotgetloaded #1846-Fix$LOAD_FEATURESpathsfor1.8 #1818-fixArrayJavaProxy#to_afailureonarrayscontainingnull #1813-cannotloadresourcesfromjaranymorewithjaruri #1809-applyminorenebo'scomments #1808-FixBigDecimal#roundbehaviorwithNANandINFINITY #1805-Zlibcrcimprovements #1803-Fixminorbugin`setNativeEnabled`,andexposeitinScriptingContainer #1802-FixEncoding::Converter#inspectoutput #1799-mvn-Pallfailsatthedocumentationstep #1790-MakeTime#to_rconsistentwithMRI #1777-ServerSocket#accept_nonblockreturnstheserver'sport,nottheclient's #1772-avoidsub-classingThreadLocalsinceitwillleakinenvssuchas.wars #1765-addedajava_fieldmethodforuseinthejrubyccommand. #1762-enhancedthejava_classcompilersoitcanhandlemultipleconstructors #1750-RefactorLoadServicetomakeuseofresources #1729-novalidstructlayoutforEthon::Curl::Slist #1676-Emptyhashoptimization #1580-IO.selectraisesCancelledKeyExceptiononshutdown #1520-Datecomparisonasjavaobjects #1435-bouncy-castle-javaJARsmissingwhenwarblingwithJRuby1.7.10
JRuby是面向Ruby、基于Java虚拟机(JVM)的一种解释程序，它结合了Ruby语言的简易性和功能强大的JVM的执行机制，包括与Java库全面集成。Rails彻底加快及简化了Web应用的开发，不过它让人觉得不够成熟，特别是在高端企业级功能方面。另一方面，Java平台及其虚拟机、库和应用服务器的速度、稳定性和功能方面却一直在提升，现在已被公认为是开发高端服务器应用的领先平台。不过如果Java平台不与Ruby等新兴语言联系在一起，就有可能落后于流行趋势。
示例代码：
require"java"
include_class"java.util.TreeSet"
include_class"com.example.CallMe"
include_class"com.example.ISpeaker"
puts"Hellofromruby"
set=TreeSet.new
set.add"foo"
set.add"Bar"
set.add"baz"
set.each{|v|puts"value:#{v}"}
cm=CallMe.new
cm.hello
$globalCM.hello
classCallJava
includeISpeaker
definitialize
super
@count=0
end
defsay(msg)
puts"Rubysaying#{msg}"
end
defaddOne(from)
#m.synchronize{
@count+=1
puts"Nowgot#@countfrom#{from}"
#}
end
end