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)
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:
For a few quick tips, consult these tables of typical troubleshooting needs, with corresponding commands, by platform.
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.
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.
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.