Java从文本文件读取整数和字符串，然后使用整数和字符串

Question

I am attempting to read in some data from a text file, this goes in the format:

String (Monday)
String (M141)
Integer (16)
Integer (6)
Double (10.5)
Double (10.5)
Integer (20)
Integer (20)
Integer (20)
Integer (30)

I have managed to read the file and tried to use nextLine to display these, this worked but after using next line to print out these values I need to manipulate the data I need to add up (30, 20, 20, 20, 10.5, 10.5) and times this by (16) to get a final value but I cannot figure out a way to do this, I tried to use an array to store them then manipulate them but had no luck. There is more than one set of data with the same format but different integers. Please help me understand how to go about this, I've been trying for over a day. Here is my code so far:

import java.io.File;
import java.io.FileNotFoundException;
import java.util.*;

public class Main {

    static Scanner console = new Scanner(System.in);


    public static void main(String[] args) throws FileNotFoundException {

        Scanner reader = new Scanner(new File("C:\\data.txt"));

        System.out.println(reader.nextLine());
        System.out.println(reader.nextLine());
        System.out.println(reader.nextInt());
        System.out.println(reader.nextInt());
        System.out.println(reader.nextDouble());
        System.out.println(reader.nextDouble());
        System.out.println(reader.nextInt());
        System.out.println(reader.nextInt());
        System.out.println(reader.nextInt());
        System.out.println(reader.nextInt());

    }
}

EDIT: I need to add up the (10.5) (10.5) (20) (20) (20) (30) and times it by 16.

Answer 1

If you're having trouble getting the numbers themselves look up Java Substring. It's very helpful. And also search Java IndexOf. These two methods will help you a lot. For example String a = "Bob(10)"; String x = a.substring(a.indexof("("),a.indexOf(")"));

Answer 2

It sounds as if the file is written in lines try

Scanner reader = new Scanner(new File("C:\\data.txt"));

String monday = reader.nextLine();
// splits up the string into pieces, seperated at the space
String[] parts = monday.split(" ");
String day = parts[0];

// you may have to use Integer.parseInt() here I don't remember
int hourMutiplier = parts[2];
int people = parts[3];
double wages = 0;
for( int i = 4; i < people + 3; i++){
  wages += parts[i];  
}
double finalWages = wages * hourmutiplier;
...

or something like that, syntax might be a little off.