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Java Platform, Standard Edition Troubleshooting Guide
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# 9.4 Basic Tools

This section simply lists a few tools that can help in troubleshooting certain types of issues. For more information on these and other tools, see the Java SE Troubleshooting Guide.

- Performance: Benchmarks, profilers, DTrace, Java probes.

- FootPrint: `jhat`, `jmap`, profilers.

- Crashes: Native debuggers.

- Hangs: JConsole, `jstack`, Control+Break.

- Font-rendering: Font2DTest (delivered with the JDK in demo/jfc/Font2DTest)

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