GNU getopt-java版的命令行程序读取参数利器

public static void main(String[] args) {

args = new String[]{"-a", "1" };
gnu.getopt.Getopt getopt = new Getopt("app", args, "a:");
int c = getopt.getopt();
switch (c){
case 'a':
System.out.println("a:" + getopt.getOptarg());
break;
default:
System.out.println(c);
}
}