{"id":160399,"date":"2022-10-05T11:00:30","date_gmt":"2022-10-05T15:00:30","guid":{"rendered":"https:\/\/ibkrcampus.com\/?p=160399"},"modified":"2023-02-23T12:19:43","modified_gmt":"2023-02-23T17:19:43","slug":"using-java-functions-in-jar-file-from-r-using-rjava","status":"publish","type":"post","link":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/","title":{"rendered":"Using Java Functions in JAR File from R Using rJava"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">This post explains how to&nbsp;<strong>call Java functions from jar file in R<\/strong>. This is useful especially when derivatives pricing or risk calculation engine already have been developed well in the form of Java in your company.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-calling-java-functions-in-jar-file-from-r\">Calling Java functions in JAR file from R<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Since we have made a sample jar file (<strong>aObba.jar<\/strong>) in the following previous post, we reuse sample functions from that jar file.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/kiandlee.blogspot.com\/2021\/06\/how-to-use-obba-for-link-between-java.html\" target=\"_blank\" rel=\"noreferrer noopener\">How to Use Obba for a link between Java and Excel<\/a><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>aObba.jar<\/strong>&nbsp;file contains three functions (func1, func2, func3) for scalar or vector operations.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>package aObba;\n \npublic class CObba {\n \n    public static double func1(double a) {return (a*a);}\n \n    public static double func2(double a, double b) {return (a*b);}\n \n    public static double&#91;] func3(double&#91;] a, double&#91;] b) {\n        double&#91;] c = new double&#91;a.length];\n        for(int i=0;i&lt;a.length;i++) {c&#91;i] = a&#91;i]*b&#91;i];}\n        return (c);\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">We try to use these java functions in this jar file in R like the following figure.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1100\" height=\"505\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/java_to_R-sh-fintech-modeling-1100x505.png\" alt=\"\" class=\"wp-image-160408 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/java_to_R-sh-fintech-modeling-1100x505.png 1100w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/java_to_R-sh-fintech-modeling-700x321.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/java_to_R-sh-fintech-modeling-300x138.png 300w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/java_to_R-sh-fintech-modeling-768x352.png 768w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2022\/10\/java_to_R-sh-fintech-modeling.png 1253w\" data-sizes=\"(max-width: 1100px) 100vw, 1100px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1100px; aspect-ratio: 1100\/505;\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">R code<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">We can easily carry out this job using&nbsp;<strong>rJava<\/strong>&nbsp;R package. The next R code is simple and straightforward but there are three things to note.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>.jaddClassPath()<\/strong>&nbsp;is called with&nbsp;<strong>jar file name with its full path<\/strong>&nbsp;explicitly<\/li>\n\n\n\n<li><strong>.jnew()<\/strong>&nbsp;is called with&nbsp;<strong>packagename.classname<\/strong><\/li>\n\n\n\n<li><strong>.jcall()<\/strong>&nbsp;is called with&nbsp;<strong>&#8220;[D&#8221;<\/strong>&nbsp;or&nbsp;<strong>as.double()<\/strong>&nbsp;explicitly when&nbsp;<strong>array input&nbsp;<\/strong>or<strong>&nbsp;output<\/strong>&nbsp;is used<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>#========================================================#\n# Quantitative ALM, Financial Econometrics &amp; Derivatives \n# ML\/DL using R, Python, Tensorflow by Sang-Heon Lee \n#\n# https:\/\/kiandlee.blogspot.com\n#--------------------------------------------------------#\n# Call Java function in jar file from R\n#========================================================#\n \ngraphics.off()  # clear all graphs\nrm(list = ls()) # remove all files from your workspace\n \nlibrary(rJava)\n \n \n.jinit()        # JVM start\n.jclassPath()   # get default class path\n \n#--------------------------------------------------\n# 1) Add directory in which *.jar file is located\n#--------------------------------------------------\n \n.jaddClassPath(\"D:\/SHLEE\/sh_jar\/aObba.jar\")\n.jclassPath()   # get class path with added path\n \n#--------------------------------------------------\n# 2) Instantiate a class object which we will use\n#--------------------------------------------------\n# rule : packagename.classname should be used\n#--------------------------------------------------\n \nObba1 &lt;- .jnew(\"aObba.CObba\")\n \n#--------------------------------------------------\n# 3) Call Java functions in the class object\n#--------------------------------------------------\n#    \"D\" : double\n#   \"&#91;D\" : double &#91;]\n# \"&#91;D&#91;D\" : double &#91;]&#91;]\n#--------------------------------------------------\n \n.jcall(Obba1, \"D\", \"func1\", 5)\n.jcall(Obba1, \"D\", \"func1\", 5.5)\n.jcall(Obba1, \"D\", \"func2\", 4, 5)\n.jcall(Obba1, \"D\", \"func2\", 4.4, 5.5)\n \n# In case of double array input, \n# \"as.double\" should be used\n.jcall(Obba1, \"&#91;D\",\"func3\", \n       as.double(1:5+0.01), as.double(11:15+0.02))<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">As can be seen, we can get the correct outputs which are returned from calling Java functions in jar file.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&gt; .jcall(Obba1, \"D\", \"func1\", 5)\n&#91;1] 25\n&gt; .jcall(Obba1, \"D\", \"func1\", 5.5)\n&#91;1] 30.25\n&gt; .jcall(Obba1, \"D\", \"func2\", 4, 5)\n&#91;1] 20\n&gt; .jcall(Obba1, \"D\", \"func2\", 4.4, 5.5)\n&#91;1] 24.2\n&gt; .jcall(Obba1, \"&#91;D\",\"func3\", \n+        as.double(1:5+0.01), as.double(11:15+0.02))\n&#91;1] 11.1302 24.1602 39.1902 56.2202 75.2502\n&gt; \n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Concluding Remarks<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">From this post, we have learned how to call Java functions in jar file from R easily with the help of&nbsp;<strong>rJava<\/strong>&nbsp;R package. This method is quite useful when complicated calculation modules are already implemented by using Java.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>For additional insight on this topic, visit&nbsp;<a href=\"https:\/\/kiandlee.blogspot.com\/2021\/10\/using-java-functions-from-jar-file-in-r.html\">https:\/\/kiandlee.blogspot.com\/2021\/10\/using-java-functions-from-jar-file-in-r.html<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This post explains how to call Java functions from jar file in R. This is useful especially when derivatives pricing or risk calculation engine already have been developed well in the form of Java in your company.<\/p>\n","protected":false},"author":662,"featured_media":41799,"comment_status":"closed","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[339,347,343,338,350,341,344,342],"tags":[806,1006,865,596,487,12855],"contributors-categories":[13728],"class_list":["post-160399","post","type-post","status-publish","format-standard","has-post-thumbnail","category-data-science","category-java-development","category-programing-languages","category-ibkr-quant-news","category-quant-asia-pacific","category-quant-development","category-quant-regions","category-r-development","tag-data-science","tag-fintech","tag-github","tag-java","tag-r","tag-rjava","contributors-categories-sh-fintech-modeling"],"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Using Java Functions in JAR File from R Using rJava<\/title>\n<meta name=\"description\" content=\"This post explains how to call Java functions from jar file in R. This is useful especially when derivatives pricing or risk calculation engine already...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.interactivebrokers.com\/campus\/wp-json\/wp\/v2\/posts\/160399\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Using Java Functions in JAR File from R Using rJava | IBKR Quant Blog\" \/>\n<meta property=\"og:description\" content=\"This post explains how to call Java functions from jar file in R. This is useful especially when derivatives pricing or risk calculation engine already have been developed well in the form of Java in your company.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/\" \/>\n<meta property=\"og:site_name\" content=\"IBKR Campus US\" \/>\n<meta property=\"article:published_time\" content=\"2022-10-05T15:00:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-02-23T17:19:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/04\/java-keyboard.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"900\" \/>\n\t<meta property=\"og:image:height\" content=\"550\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Sang-Heon Lee\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Sang-Heon Lee\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\n\t    \"@context\": \"https:\\\/\\\/schema.org\",\n\t    \"@graph\": [\n\t        {\n\t            \"@type\": \"NewsArticle\",\n\t            \"@id\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/ibkr-quant-news\\\/using-java-functions-in-jar-file-from-r-using-rjava\\\/#article\",\n\t            \"isPartOf\": {\n\t                \"@id\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/ibkr-quant-news\\\/using-java-functions-in-jar-file-from-r-using-rjava\\\/\"\n\t            },\n\t            \"author\": {\n\t                \"name\": \"Sang-Heon Lee\",\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#\\\/schema\\\/person\\\/0a959ff9de7f0465a07baa1fe1ae0200\"\n\t            },\n\t            \"headline\": \"Using Java Functions in JAR File from R Using rJava\",\n\t            \"datePublished\": \"2022-10-05T15:00:30+00:00\",\n\t            \"dateModified\": \"2023-02-23T17:19:43+00:00\",\n\t            \"mainEntityOfPage\": {\n\t                \"@id\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/ibkr-quant-news\\\/using-java-functions-in-jar-file-from-r-using-rjava\\\/\"\n\t            },\n\t            \"wordCount\": 277,\n\t            \"publisher\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#organization\"\n\t            },\n\t            \"image\": {\n\t                \"@id\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/ibkr-quant-news\\\/using-java-functions-in-jar-file-from-r-using-rjava\\\/#primaryimage\"\n\t            },\n\t            \"thumbnailUrl\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/wp-content\\\/uploads\\\/sites\\\/2\\\/2020\\\/04\\\/java-keyboard.jpg\",\n\t            \"keywords\": [\n\t                \"Data Science\",\n\t                \"fintech\",\n\t                \"GitHub\",\n\t                \"Java\",\n\t                \"R\",\n\t                \"rJava\"\n\t            ],\n\t            \"articleSection\": [\n\t                \"Data Science\",\n\t                \"Java Development\",\n\t                \"Programming Languages\",\n\t                \"Quant\",\n\t                \"Quant Asia Pacific\",\n\t                \"Quant Development\",\n\t                \"Quant Regions\",\n\t                \"R Development\"\n\t            ],\n\t            \"inLanguage\": \"en-US\"\n\t        },\n\t        {\n\t            \"@type\": \"WebPage\",\n\t            \"@id\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/ibkr-quant-news\\\/using-java-functions-in-jar-file-from-r-using-rjava\\\/\",\n\t            \"url\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/ibkr-quant-news\\\/using-java-functions-in-jar-file-from-r-using-rjava\\\/\",\n\t            \"name\": \"Using Java Functions in JAR File from R Using rJava | IBKR Quant Blog\",\n\t            \"isPartOf\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#website\"\n\t            },\n\t            \"primaryImageOfPage\": {\n\t                \"@id\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/ibkr-quant-news\\\/using-java-functions-in-jar-file-from-r-using-rjava\\\/#primaryimage\"\n\t            },\n\t            \"image\": {\n\t                \"@id\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/ibkr-quant-news\\\/using-java-functions-in-jar-file-from-r-using-rjava\\\/#primaryimage\"\n\t            },\n\t            \"thumbnailUrl\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/wp-content\\\/uploads\\\/sites\\\/2\\\/2020\\\/04\\\/java-keyboard.jpg\",\n\t            \"datePublished\": \"2022-10-05T15:00:30+00:00\",\n\t            \"dateModified\": \"2023-02-23T17:19:43+00:00\",\n\t            \"description\": \"This post explains how to call Java functions from jar file in R. This is useful especially when derivatives pricing or risk calculation engine already have been developed well in the form of Java in your company.\",\n\t            \"inLanguage\": \"en-US\",\n\t            \"potentialAction\": [\n\t                {\n\t                    \"@type\": \"ReadAction\",\n\t                    \"target\": [\n\t                        \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/ibkr-quant-news\\\/using-java-functions-in-jar-file-from-r-using-rjava\\\/\"\n\t                    ]\n\t                }\n\t            ]\n\t        },\n\t        {\n\t            \"@type\": \"ImageObject\",\n\t            \"inLanguage\": \"en-US\",\n\t            \"@id\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/ibkr-quant-news\\\/using-java-functions-in-jar-file-from-r-using-rjava\\\/#primaryimage\",\n\t            \"url\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/wp-content\\\/uploads\\\/sites\\\/2\\\/2020\\\/04\\\/java-keyboard.jpg\",\n\t            \"contentUrl\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/wp-content\\\/uploads\\\/sites\\\/2\\\/2020\\\/04\\\/java-keyboard.jpg\",\n\t            \"width\": 900,\n\t            \"height\": 550,\n\t            \"caption\": \"Java\"\n\t        },\n\t        {\n\t            \"@type\": \"WebSite\",\n\t            \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#website\",\n\t            \"url\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/\",\n\t            \"name\": \"IBKR Campus US\",\n\t            \"description\": \"Financial Education from Interactive Brokers\",\n\t            \"publisher\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#organization\"\n\t            },\n\t            \"potentialAction\": [\n\t                {\n\t                    \"@type\": \"SearchAction\",\n\t                    \"target\": {\n\t                        \"@type\": \"EntryPoint\",\n\t                        \"urlTemplate\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/?s={search_term_string}\"\n\t                    },\n\t                    \"query-input\": {\n\t                        \"@type\": \"PropertyValueSpecification\",\n\t                        \"valueRequired\": true,\n\t                        \"valueName\": \"search_term_string\"\n\t                    }\n\t                }\n\t            ],\n\t            \"inLanguage\": \"en-US\"\n\t        },\n\t        {\n\t            \"@type\": \"Organization\",\n\t            \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#organization\",\n\t            \"name\": \"Interactive Brokers\",\n\t            \"alternateName\": \"IBKR\",\n\t            \"url\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/\",\n\t            \"logo\": {\n\t                \"@type\": \"ImageObject\",\n\t                \"inLanguage\": \"en-US\",\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#\\\/schema\\\/logo\\\/image\\\/\",\n\t                \"url\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/wp-content\\\/uploads\\\/sites\\\/2\\\/2024\\\/05\\\/ibkr-campus-logo.jpg\",\n\t                \"contentUrl\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/wp-content\\\/uploads\\\/sites\\\/2\\\/2024\\\/05\\\/ibkr-campus-logo.jpg\",\n\t                \"width\": 669,\n\t                \"height\": 669,\n\t                \"caption\": \"Interactive Brokers\"\n\t            },\n\t            \"image\": {\n\t                \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#\\\/schema\\\/logo\\\/image\\\/\"\n\t            },\n\t            \"publishingPrinciples\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/about-ibkr-campus\\\/\",\n\t            \"ethicsPolicy\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/cyber-security-notice\\\/\"\n\t        },\n\t        {\n\t            \"@type\": \"Person\",\n\t            \"@id\": \"https:\\\/\\\/ibkrcampus.com\\\/campus\\\/#\\\/schema\\\/person\\\/0a959ff9de7f0465a07baa1fe1ae0200\",\n\t            \"name\": \"Sang-Heon Lee\",\n\t            \"url\": \"https:\\\/\\\/www.interactivebrokers.com\\\/campus\\\/author\\\/sang-heonlee\\\/\"\n\t        }\n\t    ]\n\t}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Using Java Functions in JAR File from R Using rJava","description":"This post explains how to call Java functions from jar file in R. This is useful especially when derivatives pricing or risk calculation engine already...","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.interactivebrokers.com\/campus\/wp-json\/wp\/v2\/posts\/160399\/","og_locale":"en_US","og_type":"article","og_title":"Using Java Functions in JAR File from R Using rJava | IBKR Quant Blog","og_description":"This post explains how to call Java functions from jar file in R. This is useful especially when derivatives pricing or risk calculation engine already have been developed well in the form of Java in your company.","og_url":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/","og_site_name":"IBKR Campus US","article_published_time":"2022-10-05T15:00:30+00:00","article_modified_time":"2023-02-23T17:19:43+00:00","og_image":[{"width":900,"height":550,"url":"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/04\/java-keyboard.jpg","type":"image\/jpeg"}],"author":"Sang-Heon Lee","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Sang-Heon Lee","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"NewsArticle","@id":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/#article","isPartOf":{"@id":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/"},"author":{"name":"Sang-Heon Lee","@id":"https:\/\/ibkrcampus.com\/campus\/#\/schema\/person\/0a959ff9de7f0465a07baa1fe1ae0200"},"headline":"Using Java Functions in JAR File from R Using rJava","datePublished":"2022-10-05T15:00:30+00:00","dateModified":"2023-02-23T17:19:43+00:00","mainEntityOfPage":{"@id":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/"},"wordCount":277,"publisher":{"@id":"https:\/\/ibkrcampus.com\/campus\/#organization"},"image":{"@id":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/#primaryimage"},"thumbnailUrl":"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/04\/java-keyboard.jpg","keywords":["Data Science","fintech","GitHub","Java","R","rJava"],"articleSection":["Data Science","Java Development","Programming Languages","Quant","Quant Asia Pacific","Quant Development","Quant Regions","R Development"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/","url":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/","name":"Using Java Functions in JAR File from R Using rJava | IBKR Quant Blog","isPartOf":{"@id":"https:\/\/ibkrcampus.com\/campus\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/#primaryimage"},"image":{"@id":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/#primaryimage"},"thumbnailUrl":"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/04\/java-keyboard.jpg","datePublished":"2022-10-05T15:00:30+00:00","dateModified":"2023-02-23T17:19:43+00:00","description":"This post explains how to call Java functions from jar file in R. This is useful especially when derivatives pricing or risk calculation engine already have been developed well in the form of Java in your company.","inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/using-java-functions-in-jar-file-from-r-using-rjava\/#primaryimage","url":"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/04\/java-keyboard.jpg","contentUrl":"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/04\/java-keyboard.jpg","width":900,"height":550,"caption":"Java"},{"@type":"WebSite","@id":"https:\/\/ibkrcampus.com\/campus\/#website","url":"https:\/\/ibkrcampus.com\/campus\/","name":"IBKR Campus US","description":"Financial Education from Interactive Brokers","publisher":{"@id":"https:\/\/ibkrcampus.com\/campus\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ibkrcampus.com\/campus\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/ibkrcampus.com\/campus\/#organization","name":"Interactive Brokers","alternateName":"IBKR","url":"https:\/\/ibkrcampus.com\/campus\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ibkrcampus.com\/campus\/#\/schema\/logo\/image\/","url":"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2024\/05\/ibkr-campus-logo.jpg","contentUrl":"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2024\/05\/ibkr-campus-logo.jpg","width":669,"height":669,"caption":"Interactive Brokers"},"image":{"@id":"https:\/\/ibkrcampus.com\/campus\/#\/schema\/logo\/image\/"},"publishingPrinciples":"https:\/\/www.interactivebrokers.com\/campus\/about-ibkr-campus\/","ethicsPolicy":"https:\/\/www.interactivebrokers.com\/campus\/cyber-security-notice\/"},{"@type":"Person","@id":"https:\/\/ibkrcampus.com\/campus\/#\/schema\/person\/0a959ff9de7f0465a07baa1fe1ae0200","name":"Sang-Heon Lee","url":"https:\/\/www.interactivebrokers.com\/campus\/author\/sang-heonlee\/"}]}},"jetpack_featured_media_url":"https:\/\/www.interactivebrokers.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/04\/java-keyboard.jpg","_links":{"self":[{"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/posts\/160399","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/users\/662"}],"replies":[{"embeddable":true,"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/comments?post=160399"}],"version-history":[{"count":0,"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/posts\/160399\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/media\/41799"}],"wp:attachment":[{"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/media?parent=160399"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/categories?post=160399"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/tags?post=160399"},{"taxonomy":"contributors-categories","embeddable":true,"href":"https:\/\/ibkrcampus.com\/campus\/wp-json\/wp\/v2\/contributors-categories?post=160399"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}