Write a static method named "tonnage" that accepts one parameter (a Scanner attached to an input file) whose data represents a series of weights representing on-board freight for a truck. Your method should add up the weights and display the total-number of items and the total-weight of the truck cargo. The input consists of a series of records where the first entry is a Sting representing an item, followed by one or two pairs of tokens, where each pair is an integer followed by a String representing the measure of weight used. Measures are pounds, tons, and metric-tons. The measures are to be read case-insensitively. For example, if the input file contains the following lines of text: Item-1 745 pounds Item-2 2 Tons 550 pounds Item-3 3 metric-Tons Item-4 1 Metric-tons 75 pounds In this example a ton is equal to 2000 pounds, a metric-ton equals 2205 pounds so the total pounds equals: 745 + 4000 + 550 + 6615 + 2205 + 75 = 14,190 pounds = 7 tons 190 pounds; The output of your method should be: 4 items weighing 7 tons 190 pounds You may assume that the file entries are well-formed as in the example above. You may use this file entries provided to test your code, BUT your code should work correctly with any well-formed file. I will use a different file to grade. You may use the following code to test your program: import java.util.; import java.io.; public class CountWeight { public static void main(String[] args) throws FileNotFoundException { // * your method code goes here * } // End of CountWeight class Scanner fileIn = new Scanner(new File("weights.txt")); tonnage(fileIn); fileIn.close(); }

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Write a static method named "tonnage" that accepts one parameter (a Scanner attached to an input file) whose data represents a series of weights representing on-board freight for a truck. Your method should add up the weights and display the total-number of items and the total-weight of the truck cargo.
The input consists of a series of records where the first entry is a Sting representing an item, followed by one or two pairs of tokens, where each pair is an integer followed by a String representing the measure of weight used. Measures are pounds, tons, and metric-tons. The measures are to be read case-insensitively.
For example, if the input file contains the following lines of text:
       Item-1   745 pounds
       Item-2   2 Tons 550 pounds
       Item-3   3 metric-Tons
       Item-4   1 Metric-tons 75 pounds
In this example a ton is equal to 2000 pounds, a metric-ton equals 2205 pounds so the total pounds equals:  745 + 4000 + 550 + 6615 + 2205 + 75 = 14,190 pounds = 7 tons 190 pounds;

The output of your method should be: 4 items weighing 7 tons 190 pounds
You may assume that the file entries are well-formed as in the example above. You may use this file entries provided to test your code, BUT your code should work correctly with any well-formed file. I will use a different file to grade.
You may use the following code to test your program:
import java.util.*;
import java.io.*;
public class CountWeight {
  public static void main(String[] args) throws FileNotFoundException {
// *** your method code goes here ***
} // End of CountWeight class
     Scanner fileIn = new Scanner(new File("weights.txt"));
     tonnage(fileIn);
     fileIn.close();
  }

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