Troubleshooting Java SE
The Java Platform, Standard Edition (Java SE) allows the development and deployment of a large variety of complex applications.
This web page contains pointers to information to help you troubleshoot problems you encounter with applications developed with Java SE release 8.
(For troubleshooting information for J2SE release 7, see Troubleshooting J2SE 7)
Contents of This Page
Troubleshooting Guide
The Java Troubleshooting guide is available (in English only) to help you diagnose and solve problems that occur in applications running on Java SE 8:
- Troubleshooting Guide for Java SE 8
- Describes the Java SE troubleshooting tools, how to develop your own tools using the APIs provided with the platform, several suggested troubleshooting procedures, how to submit bug reports, and detailed reference information.
- Describes common issues which can occur with Java SE desktop technologies, such as Swing, AWT, Java 2D, and so forth, as well as suggestions for troubleshooting these issues.
- Document last updated August 2014
Quick Tips!
For a few quick tips, consult these tables of typical troubleshooting needs, with corresponding commands, by platform.
- Tips on Solaris OS and Linux for Java SE 6
- Tips on Windows for Java SE 6
Troubleshooting Tools
The Troubleshooting Guide for Java SE 8 contains a list of monitoring and debugging tools in Java SE 8. Note that these tools are unsupported and experimental in nature, and they might not be available in future JDK versions.
Pertinent Articles for Troubleshooting
- Monitoring and Managing Java SE 6 Platform Applications - by Mandy Chung - How to use several monitoring and management tools to troubleshoot common problems with Java SE applications.
- Introduction to Java VisualVM - Overview of Java VisualVM, the all-in-one graphical and extensible troubleshooting tool.
Pertinent Blogs for Troubleshooting
The Planet JDK site represents an aggregation of JDK developers' blogs.
The following is a (non-exhaustive) list of bloggers' helpful information and tips for troubleshooting Java SE applications.
- Frank Kieviet's blog: "OutOfMemoryError: PermGen space" exception
- A. Sundararajan's (Sundar) blog:
- Serviceability Agent, command-line arguments, creating binary heap dumps, using DTrace, JConsole, all troubleshooting tools
- viewing heap histogram
- Querying Java heap with OQL (Object Query Language)
- Perm gen analysis with OQL
- jrunscript, heapViewer demo, attach-on-demand API
Pertinent Forum Sites for Troubleshooting
Visit the various forum sites, where you can browse for information and post your own questions. Perhaps someone else has already encountered your problem! Use the Search facility on the forum site to specify your problem area.
This is a very brief list of pointers to the high-level entries into some of these sites.
- Java Games Forums (a java.net community): various Java SE desktop technologies