Checking command line arguments
private static final String OUTPUT_FILE = "output";
OptionSet optionSet = checkArgs(args);
String outFile = optionSet.valueOf(OUTPUT_FILE).toString();
private static OptionSet checkArgs(String[] args) throws IOException {
OptionParser optionParser = new OptionParser(){
{
accepts(OUTPUT_FILE).withRequiredArg().ofType(String.class).required().describedAs("output file");
}
};
try {
return optionParser.parse(args);
}catch(OptionException e){
logger.error("Invalid arguments:");
optionParser.printHelpOn(System.out);
throw e;
}
}