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src/jdk.jcmd/share/classes/sun/tools/jstat/Arguments.java

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rev 47329 : 8189102: All tools should support -?, -h and --help

*** 71,81 **** private String vmIdString; private VmIdentifier vmId; public static void printUsage(PrintStream ps) { ! ps.println("Usage: jstat -help|-options"); ps.println(" jstat -<option> [-t] [-h<lines>] <vmid> [<interval> [<count>]]"); ps.println(); ps.println("Definitions:"); ps.println(" <option> An option reported by the -options option"); ps.println(" <vmid> Virtual Machine Identifier. A vmid takes the following form:"); --- 71,81 ---- private String vmIdString; private VmIdentifier vmId; public static void printUsage(PrintStream ps) { ! ps.println("Usage: jstat --help|-options"); ps.println(" jstat -<option> [-t] [-h<lines>] <vmid> [<interval> [<count>]]"); ps.println(); ps.println("Definitions:"); ps.println(" <option> An option reported by the -options option"); ps.println(" <vmid> Virtual Machine Identifier. A vmid takes the following form:");
*** 91,110 **** --- 91,112 ---- ps.println(" <n>[\"ms\"|\"s\"]"); ps.println(" Where <n> is an integer and the suffix specifies the units as "); ps.println(" milliseconds(\"ms\") or seconds(\"s\"). The default units are \"ms\"."); ps.println(" <count> Number of samples to take before terminating."); ps.println(" -J<flag> Pass <flag> directly to the runtime system."); + ps.println(" -? -h --help Prints this help message."); // undocumented options: // -list [<vmid>] - list counter names // -snap <vmid> - snapshot counter values as name=value pairs // -name <pattern> - output counters matching given pattern // -a - sort in ascending order (default) // -d - sort in descending order // -v - verbose output (-snap) // -constants - output constants with -name output // -strings - output strings with -name output + // -help - same as -? ... } private static int toMillis(String s) throws IllegalArgumentException { String[] unitStrings = { "ms", "s" }; // ordered from most specific to
*** 145,154 **** --- 147,159 ---- help = true; return; } if ((args[0].compareTo("-?") == 0) + || (args[0].compareTo("-h") == 0) + || (args[0].compareTo("--help") == 0) + // -help: legacy. Undocumented. || (args[0].compareTo("-help") == 0)) { help = true; return; } else if (args[0].compareTo("-options") == 0) { options = true;
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