public static void main(String[] argv) { if (argv.length != 2) { System.err.println("Usage: " + BugHistory.class.getName() + " <old results> <new results>");
public static void main(String[] argv) throws Exception { if (argv.length != 3) { System.err.println("Usage: " + BugHistory.class.getName() + " <operation> <old results> <new results>\n" + "Operations:\n" + "   -new        Output new bugs (in new results but not in old results)\n" + "   -fixed      Output fixed bugs (in old results but not in new results)\n" + "   -retained   Output retained bugs (in both old and new results)");
	public static void main(String[] argv) {		if (argv.length != 2) {			System.err.println("Usage: " + BugHistory.class.getName() + " <old results> <new results>");			System.exit(1);		}		String oldResults = argv[0];		String newResults = argv[1];	}