.docx нет?
В пустом файле находит что-то лишнее и бросает:
Exception in thread "main" java.lang.NumberFormatException: For input string: "PK"
package com.javarush.task.task18.task1827;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
/*
Прайсы
*/
public class Solution
public static class Product {
int id;
String name;
String price;
String quantity;
public Product(int id, String name, String price, String quantity) {
this.id = id;
this.name = name;
this.price = price;
this.quantity = quantity;
}
@Override
public String toString() {
return String.format("%-8d%-30s%-8s%-4s", id, name, price, quantity);
}
}
public static void main(String[] args) throws Exception {
if (args.length == 0) {
return;
}
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String fileName = reader.readLine();
List<Product> products = new ArrayList<>();
try (BufferedReader fileReader = new BufferedReader(new FileReader(fileName))) {
while (fileReader.ready()) {
Product product = getProduct(fileReader.readLine());
products.add(product);
}
}
switch (args[0]) {
case "-c":
int id = 0;
for (Product product : products) {
if (product.id > id) id = product.id;
}
String name = "";
for (int i = 1; i < args.length - 2; i++) {
name += args[i] + " ";
}
if (name.length() > 30) {
name = name.substring(0, 30);
}
String price = args[args.length - 2];
if (price.length() > 8) {
price = price.substring(0, 8);
}
String quantity = args[args.length - 1];
if (quantity.length() > 4) {
quantity = quantity.substring(0, 4);
}
Product product = new Product(++id, name.trim(), price, quantity);
products.add(product);
}
try (FileWriter fileWriter = new FileWriter(fileName)) {
for (Product product : products) {
fileWriter.write(product.toString());
fileWriter.write("\n");
}
}
}
public static Product getProduct(String string) {
String id = string.substring(0, 8).trim();
String name = string.substring(8, 38).trim();
String price = string.substring(38, 46).trim();
String quantity = string.substring(46, 50).trim();
return new Product(Integer.parseInt(id), name, price, quantity);
}
}