{"id":3372,"date":"2015-01-20T02:55:05","date_gmt":"2015-01-20T02:55:05","guid":{"rendered":"http:\/\/www.gubatron.com\/blog\/?p=3372"},"modified":"2015-12-21T00:09:00","modified_gmt":"2015-12-21T00:09:00","slug":"2-java-debugging-tricks","status":"publish","type":"post","link":"https:\/\/www.gubatron.com\/blog\/2-java-debugging-tricks\/","title":{"rendered":"2 Java debugging tricks"},"content":{"rendered":"

1. Embed state in your thread names.<\/strong><\/p>\n

Some times when you see a crash log with a thread dump, you see the stack of all the threads at the moment of the snapshot, but there’s no way to see what the state of the variables and objects at play in the thread were like.<\/p>\n

You can use Thread.currentThread.setName(...)<\/code> and embed variable states on the thread name for a more useful thread dump output.<\/p>\n

2. Set a Default uncaught exception handler<\/a> and log the error to the thread.<\/strong><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

1. Embed state in your thread names. Some times when you see a crash log with a thread dump, you see the stack of all the threads at the moment of the snapshot, but there’s no way to see what the state of the variables and objects at play in the thread were like. You […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[15],"tags":[1425,583],"class_list":["post-3372","post","type-post","status-publish","format-standard","hentry","category-code","tag-debugging","tag-java"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p5Unzf-So","jetpack-related-posts":[{"id":156,"url":"https:\/\/www.gubatron.com\/blog\/portscanner-only-60-lines-of-code\/","url_meta":{"origin":3372,"position":0},"title":"PortScanner – Only 60 lines of code","author":"gubatron","date":"May 19, 2005","format":false,"excerpt":"Hi, here's a simple port scanner I wrote today in Java. I needed to see something on my server, perhaps you can find it useful. I would say its pretty fast, you can tweak the number of threads and timeouts to adjust to your server\/connection. I did't do much testing\u2026","rel":"","context":"In "Gubatron"","block_context":{"text":"Gubatron","link":"https:\/\/www.gubatron.com\/blog\/category\/gubatron\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":611,"url":"https:\/\/www.gubatron.com\/blog\/pyqt4-using-qmutex-vs-qmutexlocker\/","url_meta":{"origin":3372,"position":1},"title":"PyQt4: Using QMutex vs QMutexLocker.","author":"gubatron","date":"November 25, 2007","format":false,"excerpt":"Here's some code for my future reference on how to use QMutex or QMutexLocker. Lessons Learned: * Use QMutex to protect data, not code. 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This post refers specifically to getting your eclipse environment to work with a particular\u2026","rel":"","context":"In "BitCoin"","block_context":{"text":"BitCoin","link":"https:\/\/www.gubatron.com\/blog\/category\/bitcoin-2\/"},"img":{"alt_text":"Screen Shot 2014-02-09 at 1.09.39 PM","src":"https:\/\/i0.wp.com\/www.gubatron.com\/blog\/wp-content\/uploads\/2014\/02\/Screen-Shot-2014-02-09-at-1.09.39-PM.png?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.gubatron.com\/blog\/wp-content\/uploads\/2014\/02\/Screen-Shot-2014-02-09-at-1.09.39-PM.png?resize=350%2C200 1x, https:\/\/i0.wp.com\/www.gubatron.com\/blog\/wp-content\/uploads\/2014\/02\/Screen-Shot-2014-02-09-at-1.09.39-PM.png?resize=525%2C300 1.5x"},"classes":[]},{"id":2931,"url":"https:\/\/www.gubatron.com\/blog\/how-to-enable-adb-logcat-debugging-output-on-android-4\/","url_meta":{"origin":3372,"position":3},"title":"How to enable adb logcat on Android 4 (debugging output)","author":"gubatron","date":"March 4, 2013","format":false,"excerpt":"So you got a new Nexus or another Android running Android +4.2 and there's no \"Applications\" menu entry in the settings menu. 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