{"id":1002,"date":"2022-08-08T02:41:09","date_gmt":"2023-03-06T17:56:43","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/uncategorized\/one-option-for-paraphrasing-java-thread-join-example-natively-could-be-example-of-using-the-java-thread-join-method\/"},"modified":"2025-07-18T16:47:50","modified_gmt":"2025-07-18T16:47:50","slug":"one-option-for-paraphrasing-java-thread-join-example-natively-could-be-example-of-using-the-java-thread-join-method","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/one-option-for-paraphrasing-java-thread-join-example-natively-could-be-example-of-using-the-java-thread-join-method\/","title":{"rendered":"Java Thread Join method"},"content":{"rendered":"<p>The Java Thread join method allows the current thread to pause its execution until the specified thread finishes. There are three different versions of the join function.<\/p>\n<h2>Wait for a Java thread to finish execution<\/h2>\n<p>The join() method in Java is used to make the current thread wait until the thread on which it is called is finished. If the thread is interrupted, it will throw an InterruptedException. There are two additional variants of the <a href=\"https:\/\/docs.oracle.com\/javase\/8\/docs\/api\/java\/lang\/String.html\">join<\/a>() method. The join(long millis) method can be used to make the current thread wait for the specified number of milliseconds or until the target thread is finished. However, due to differences in OS implementation, it cannot guarantee that the current thread will wait only for the given time. The join(long millis, int nanos) method can be used to make the current thread wait for the specified number of milliseconds and nanoseconds or until the target thread is finished. Here is a simple example that demonstrates the usage of the Thread join methods. The objective of the program is to ensure that the main thread is the last one to finish and that the third thread starts only when the first one is finished.<\/p>\n<pre class=\"post-pre\"><code>package com.scdev.threads;\r\n\r\npublic class ThreadJoinExample {\r\n\r\n    public static void main(String[] args) {\r\n        Thread t1 = new Thread(new MyRunnable(), \"t1\");\r\n        Thread t2 = new Thread(new MyRunnable(), \"t2\");\r\n        Thread t3 = new Thread(new MyRunnable(), \"t3\");\r\n        \r\n        t1.start();\r\n        \r\n        \/\/start second thread after waiting for 2 seconds or if it's dead\r\n        try {\r\n            t1.join(2000);\r\n        } catch (InterruptedException e) {\r\n            e.printStackTrace();\r\n        }\r\n        \r\n        t2.start();\r\n        \r\n        \/\/start third thread only when first thread is dead\r\n        try {\r\n            t1.join();\r\n        } catch (InterruptedException e) {\r\n            e.printStackTrace();\r\n        }\r\n        \r\n        t3.start();\r\n        \r\n        \/\/let all threads finish execution before finishing main thread\r\n        try {\r\n            t1.join();\r\n            t2.join();\r\n            t3.join();\r\n        } catch (InterruptedException e) {\r\n            \/\/ TODO Auto-generated catch block\r\n            e.printStackTrace();\r\n        }\r\n        \r\n        System.out.println(\"All threads are dead, exiting main thread\");\r\n    }\r\n\r\n}\r\n\r\nclass MyRunnable implements Runnable{\r\n\r\n    @Override\r\n    public void run() {\r\n        System.out.println(\"Thread started:::\"+Thread.currentThread().getName());\r\n        try {\r\n            Thread.sleep(4000);\r\n        } catch (InterruptedException e) {\r\n            e.printStackTrace();\r\n        }\r\n        System.out.println(\"Thread ended:::\"+Thread.currentThread().getName());\r\n    }\r\n    \r\n}\r\n<\/code><\/pre>\n<p>The program above will produce the following result:<\/p>\n<pre class=\"post-pre\"><code>Thread started:::t1\r\nThread started:::t2\r\nThread ended:::t1\r\nThread started:::t3\r\nThread ended:::t2\r\nThread ended:::t3\r\nAll threads are dead, exiting main thread\r\n<\/code><\/pre>\n<p>That&#8217;s it for a brief overview of an example involving joining Java threads.<\/p>\n<p>&nbsp;<\/p>\n<p>more tutorials<\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/multithreading-in-java-that-you-need-to-know\/\" target=\"_blank\" rel=\"noopener\">multithreading in Java that you need to know<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/java-thread-ensuring-safety\/\" target=\"_blank\" rel=\"noopener\">Java thread ensuring Java code is thread-safe<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/adding-a-string-to-a-python-variable\/\" target=\"_blank\" rel=\"noopener\">Adding a string to a Python variable<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/ensuring-thread-safety-in-java-singleton-classes\/\" target=\"_blank\" rel=\"noopener\">Ensuring thread safety in Java Singleton Classes<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/java-string-substring-method\/\" target=\"_blank\" rel=\"noopener\">Java String substring() method<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Java Thread join method allows the current thread to pause its execution until the specified thread finishes. There are three different versions of the join function. Wait for a Java thread to finish execution The join() method in Java is used to make the current thread wait until the thread on which it is [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[222,219,217,180,216,221,220,218],"class_list":["post-1002","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-concurrent-programming","tag-java-concurrency","tag-java-multithreading","tag-java-programming","tag-java-thread-join-method","tag-java-tutorials","tag-thread-management","tag-thread-synchronization"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java Thread Join method - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to use Java Thread join method to synchronize threads. 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Complete guide with examples of join(), join(long millis), and join(long millis, int nanos) methods.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/one-option-for-paraphrasing-java-thread-join-example-natively-could-be-example-of-using-the-java-thread-join-method\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-03-06T17:56:43+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-18T16:47:50+00:00\" \/>\n<meta name=\"author\" content=\"Liam\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Liam\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/one-option-for-paraphrasing-java-thread-join-example-natively-could-be-example-of-using-the-java-thread-join-method\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/one-option-for-paraphrasing-java-thread-join-example-natively-could-be-example-of-using-the-java-thread-join-method\/\"},\"author\":{\"name\":\"Liam\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/23786905eb7b377f45ddb01c17da7671\"},\"headline\":\"Java Thread Join method\",\"datePublished\":\"2023-03-06T17:56:43+00:00\",\"dateModified\":\"2025-07-18T16:47:50+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/one-option-for-paraphrasing-java-thread-join-example-natively-could-be-example-of-using-the-java-thread-join-method\/\"},\"wordCount\":293,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"keywords\":[\"concurrent programming\",\"Java concurrency\",\"Java multithreading\",\"Java programming\",\"Java Thread join method\",\"Java tutorials\",\"thread management\",\"thread synchronization\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/one-option-for-paraphrasing-java-thread-join-example-natively-could-be-example-of-using-the-java-thread-join-method\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/one-option-for-paraphrasing-java-thread-join-example-natively-could-be-example-of-using-the-java-thread-join-method\/\",\"name\":\"Java Thread Join method - Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#website\"},\"datePublished\":\"2023-03-06T17:56:43+00:00\",\"dateModified\":\"2025-07-18T16:47:50+00:00\",\"description\":\"Learn how to use Java Thread join method to synchronize threads. 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