{"id":21311,"date":"2018-07-15T04:00:54","date_gmt":"2018-07-15T04:00:54","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=21311"},"modified":"2026-05-16T15:10:46","modified_gmt":"2026-05-16T09:40:46","slug":"java-runtime-environment-jre","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/java-runtime-environment-jre\/","title":{"rendered":"Learn JRE (Java Runtime Environment) With Example"},"content":{"rendered":"<div class='__iawmlf-post-loop-links' style='display:none;' data-iawmlf-post-links='[{&quot;id&quot;:1883,&quot;href&quot;:&quot;http:\\\/\\\/www.oracle.com&quot;,&quot;archived_href&quot;:&quot;http:\\\/\\\/web-wp.archive.org\\\/web\\\/20250925175020\\\/https:\\\/\\\/www.oracle.com\\\/&quot;,&quot;redirect_href&quot;:&quot;&quot;,&quot;checks&quot;:[{&quot;date&quot;:&quot;2025-12-10 06:37:12&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-01-15 06:52:47&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-02-04 09:48:53&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-02-11 04:51:57&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-02-23 07:37:58&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-02-27 05:52:12&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-03-03 18:44:02&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-04-07 04:43:49&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-04-10 22:47:41&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-04-21 04:05:18&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-05-06 12:01:15&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-05-13 12:40:26&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-06-09 01:22:34&quot;,&quot;http_code&quot;:403}],&quot;broken&quot;:true,&quot;last_checked&quot;:{&quot;date&quot;:&quot;2026-06-09 01:22:34&quot;,&quot;http_code&quot;:403},&quot;process&quot;:&quot;done&quot;}]'><\/div>\n<p><span style=\"font-weight: 400\">In our last<a href=\"https:\/\/data-flair.training\/blogs\/java-tutorial\/\" target=\"_blank\" rel=\"noopener\"> <strong>Java tutorial<\/strong><\/a>, we discussed <a href=\"https:\/\/data-flair.training\/blogs\/java-use-cases\/\" target=\"_blank\" rel=\"noopener\"><strong>Java Use Cases<\/strong><\/a>. Today, we will see the Java Runtime Environment. Moreover, we will understand JRE with the help of an example.<\/span><\/p>\n<p><span style=\"font-weight: 400\">So, let&#8217;s start the Java Runtime Environment.<\/span><\/p>\n<p>The Java Runtime Environment provides the essential classes and libraries to run Java programs. It is a layer that connects the Java code and the hardware to execute the Java applications.<\/p>\n<p>As a result, it provides the feature of Platform Independence to Java programs. However, the Java runtime environment also contains the Java virtual machine for code execution.<\/p>\n<div id=\"attachment_21368\" style=\"width: 1210px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/07\/Java-Runtime-Environment-01-1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-21368\" class=\"wp-image-21368 size-full\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/07\/Java-Runtime-Environment-01-1.jpg\" alt=\"Java Runtime Environment\" width=\"1200\" height=\"628\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/07\/Java-Runtime-Environment-01-1.jpg 1200w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/07\/Java-Runtime-Environment-01-1-150x79.jpg 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/07\/Java-Runtime-Environment-01-1-300x157.jpg 300w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/07\/Java-Runtime-Environment-01-1-768x402.jpg 768w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2018\/07\/Java-Runtime-Environment-01-1-1024x536.jpg 1024w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/a><p id=\"caption-attachment-21368\" class=\"wp-caption-text\">Learn JRE (Java Runtime Environment) With Example<\/p><\/div>\n<h3>What is The Java Runtime Environment?<\/h3>\n<p><span style=\"font-weight: 400\"><strong>Definition of JRE &#8211;<\/strong> It&#8217;s a JDK (Java Development Toolkit) part. We can download it separately. Java Runtime Environment, or JRE, is used to provide an environment during runtime, and it causes the implementation of <a href=\"https:\/\/data-flair.training\/blogs\/java-virtual-machine-jvm\/\" target=\"_blank\" rel=\"noopener\"><strong>JVM\u00a0(Java Virtual machine)<\/strong><\/a>.<\/span><\/p>\n<p><span style=\"font-weight: 400\">The JRE property specifies the Java Runtime Environment that is used by the code generator for kind analysis functions. This could well, perhaps even commonly, be a different JRE than the one that is used to run the code generator.<\/span><\/p>\n<p><span style=\"font-weight: 400\">If you&#8217;ve been coding in Java for a while, you know that Java types change over time. Let\u2019s say, the java.lang.String kind has gained many methods and even a super interface over the years. Sometimes, methods or types are deprecated and that they might vanish in a later Java version.<\/span><\/p>\n<p><strong><a href=\"https:\/\/data-flair.training\/blogs\/interface-in-java\/\" target=\"_blank\" rel=\"noopener\">Let&#8217;s revise Java Interface<\/a><\/strong><\/p>\n<p><span style=\"font-weight: 400\">You usually recognize the version variety of Java Runtime Environments that your application must support. This may be a particular JRE version, or it would be something later than version X. This requirement ought to be the determining factor for your choice of JRE property.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Due to the character of the product, it&#8217;s not illegal to generate proxy types with a different JRE version than what you will be running with; it&#8217;s simply counter-recommended. Just think: you generate with Java types from a JRE one.6 and then you run on a JRE 1.3. Everything might work fine or you might have used a method that doesn&#8217;t exist in JRE one.3 and your application crashes horribly as a result of a<a href=\"https:\/\/data-flair.training\/blogs\/java-exception\/\" target=\"_blank\" rel=\"noopener\"><strong> Java exception<\/strong><\/a> is thrown that you are not ready to handle.<\/span><\/p>\n<p><span style=\"font-weight: 400\">The JRE property typically derives from the JDK property.<\/span><\/p>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/abstract-class-in-java\/\" target=\"_blank\" rel=\"noopener\"><strong>Learn<\/strong> <strong>Java Abstract Class.<\/strong><\/a><\/p>\n<h3>Example of JRE<\/h3>\n<p>So, let&#8217;s see the example of the Java Runtime Environment: JRE Version.<\/p>\n<p><span style=\"font-weight: 400\">If you ask for a specific JDK by version number, and the JDK is installed in a method that Terp will locate it, you&#8217;ll simply say.<\/span><\/p>\n<p><span style=\"font-weight: 400\">^jre(1.5)<\/span><\/p>\n<p><span style=\"font-weight: 400\">To select the Java Runtime environment with version 1.5. You\u2019ll also have used a string argument as in:<\/span><\/p>\n<p><span style=\"font-weight: 400\">^jre(&#8220;1.5.0&#8221;)<\/span><\/p>\n<p><span style=\"font-weight: 400\">In this case, the <strong><a href=\"https:\/\/data-flair.training\/blogs\/java-string-methods-and-constructor\/\" target=\"_blank\" rel=\"noopener\">string<\/a><\/strong> argument was necessary because you&#8217;re specifying the version with 3 qualifying parts (major, minor, and release), which don&#8217;t parse as a decimal number. The string type would even be necessary to specify double-digit minor numbers as a result of 1.50 without quotes is interpreted as &#8220;one point five zero&#8221; and not as &#8220;one point fifty.&#8221;<\/span><\/p>\n<p><strong><a href=\"https:\/\/data-flair.training\/blogs\/linear-data-structures-in-java\/\" target=\"_blank\" rel=\"noopener\">Let&#8217;s explore java data Structure<\/a><\/strong><\/p>\n<p>Java Runtime Environment (JRE) and Java Development Kit (JDK) are sometimes confused with one another. A compiler, debugger, and integrated development environment (IDE) are among the extra tools included in the JDK, which is a superset of the JRE and required to run Java programs. The JRE is used to run Java applications on computers without the JDK installed, while developers use the JDK to create Java applications.<\/p>\n<h3>Conclusion<\/h3>\n<p><span style=\"font-weight: 400\">Hence, in this JRE tutorial, we discussed the concept of the Java Runtime Environment with an example. Still, if any doubt, ask in the comment tab.<\/span><\/p>\n<p><strong>See also &#8211;<\/strong><\/p>\n<p><strong><a href=\"https:\/\/data-flair.training\/blogs\/jdk-vs-jre-vs-jvm\/\" target=\"_blank\" rel=\"noopener\">Difference Between JDK vs JRE vs JVM<\/a><\/strong><\/p>\n<p><a href=\"http:\/\/www.oracle.com\"><strong>For reference<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In our last Java tutorial, we discussed Java Use Cases. Today, we will see the Java Runtime Environment. Moreover, we will understand JRE with the help of an example. So, let&#8217;s start the Java&#46;&#46;&#46;<\/p>\n","protected":false},"author":5,"featured_media":21368,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32],"tags":[4299,7568,7671,7816,7817,7819,8615,15794,15795],"class_list":["post-21311","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java","tag-example-of-jre","tag-java-jdk-jre","tag-java-runtime-environment-example","tag-jre-definition","tag-jre-example","tag-jre-tutorial","tag-meaning-of-jre","tag-what-is-jdk-and-jre","tag-what-is-jre"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Learn JRE (Java Runtime Environment) With Example - DataFlair<\/title>\n<meta name=\"description\" content=\"Java Runtime Environment tutorial, what is JRE, example of Java Runtime environment, what is JDK &amp; JRE, Java JDK JRE, JRE tutorial\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/data-flair.training\/blogs\/java-runtime-environment-jre\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Learn JRE (Java Runtime Environment) With Example - 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