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http://issues.apache.org/bugzilla/show_bug.cgi?id=35037 ------- Additional Comments From [EMAIL PROTECTED] 2005-05-24 23:44 ------- I don't know what you were measuring but that's not the the case in any environment I've seen since JDK 1.3, even with the client VM. To see for yourself try this, with and without cast() / cast2(). public static void main(String[] args) throws Exception { int iters = Integer.parseInt(args[0]); // e.g. 1000 int runs = Integer.parseInt(args[1]); // e.g. 3 int sum = 0; Object[] arr = new Object[10000]; Object obj = "xx"; if (Boolean.valueOf(args[2]).booleanValue()) obj = new Integer(0); for (int i=0; i < arr.length; i++) arr[i] = obj; for (int run=0; run < runs; run++) { System.out.println("\nrun=" + run); long start = System.currentTimeMillis(); for (int j=0; j < iters; j++) { for (int i=0; i < arr.length; i++) { sum += cast2(arr[i]).charAt(0); // sum += cast(arr[i]).charAt(0); } } long end = System.currentTimeMillis(); System.out.println("secs = " + ((end-start) / 1000.0f)); } System.out.println("checksum=" + sum); } private static String cast(Object x) { if (x instanceof String) return (String)x; return "yy"; } private static String cast2(Object x) { try {return (String)x; } catch (ClassCastException e) { return "yy"; } } -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
