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Argument passed to System.exit(x) -> becomes the JVM exit code.
Exit code 0 is used to indicate normal exit. Unique positive exit code to indicate specific problem.
No. If all non-daemon threads exit normally(presence/absence of exception does not matter), JVM terminates with 0.
Exit code between 1 and 127 are specific codes used to indicate error in JVM. e.g. mismatched jdk/jre versions, incorrect memory configuration/command-line options, etc.
JVM exit due to specific signal would be
128+signal-id
List of signal-id can be found using kill -l
Is there a complete List of JVM exit codes
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原文地址:http://www.cnblogs.com/diyunpeng/p/4315132.html