引发两个单独的FileNotFoundExceptions Java的问题
我需要两个单独的异常,如果。缺少pro文件,如果缺少的文件是一个。cmd,则当前设置会在缺少任何一个异常时引发这两个异常。我做错了什么
import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;
import javax.xml.ws.Holder;
public class Inventory {
static String FileSeparator = System.getProperty("file.separator");
public static void main(String[] args) {
String path = args[0];
String name = args[1];
ArrayList<Holder> because = new ArrayList<Holder>();
try {
File product = new File(path + name + ".pro");
Scanner scan = new Scanner(product);
while (scan.hasNext()) {
System.out.print(scan.next());
}
scan.close();
} catch (FileNotFoundException e) {
System.out.println("Usage: java Inventory <path> <filename>");
System.out.println("The products file \"" + name + ".pro\" does not exist.");
}
try {
File command = new File(path + name + ".cmd");
Scanner scan = new Scanner(command);
while (scan.hasNext()) {
System.out.println(scan.next());
}
} catch (FileNotFoundException f) {
System.out.println("Usage: java Inventory <path> <filename>");
System.out.println("The commands file \"" + name + ".cmd\" does not exist.");
}
}
}
# 1 楼答案
如果我将文件对象更改为以下内容,则适用于我:
# 2 楼答案
试着像这样重构: