我写了以下内容,将几行代码作为字符串扫描并解析为整数。但在我的主要方法中,我使用p.letsReadIn来读取文件。有谁知道我可以如何将其转换为使用命令行参数来代替文件?因此,而不是让用户更改p.letsReadIn(“ReadMuah.txt”);每次只能使用命令行来读取文件。从命令行获取参数
public void letsReadIn(String filename) throws FileNotFoundException {
int x;
Scanner scan = new Scanner(new File(filename));
StringTokenizer st;
String nextLine = scan.nextLine();
st = new StringTokenizer(nextLine);
x = Integer.parseInt(st.nextToken());
nextLine = scan.nextLine();
st = new StringTokenizer(nextLine);
y= Integer.parseInt(st.nextToken());
nextLine = scan.nextLine();
st = new StringTokenizer(nextLine);
z= Integer.parseInt(st.nextToken());
for (int i = 0; i < x; i++) {
nextLine = scan.nextLine();
st = new StringTokenizer(nextLine);
listing.add(Integer.parseInt(st.nextToken()));
}
scan.close();
}
public static void main(String[] args) throws FileNotFoundException {
BagItems p = new BagItems();
p.letsReadIn("ReadMuah.txt");
p.StartBagging();
}