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Java Platform, Standard Edition Troubleshooting Guide
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7.1 Handle Signals on Oracle Solaris and Linux

The Java HotSpot VM installs signal handlers to implement various features and to handle fatal error conditions. For example, in an optimization to avoid explicit null checks in cases where java.lang.NullPointerException will be thrown rarely, the SIGSEGV signal is caught and handled, and the NullPointerException is thrown.

In general there are two categories of situations where signal/traps arise:

Table 7-2 lists the signals that are currently used on Oracle Solaris and Linux operating systems.

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