从文本文件中读取并保存并打印成文本答案

【问题标题】：Reading from text file saving it and printing it out into a text从文本文件中读取并保存并打印成文本
【发布时间】：2017-02-11 17:11:43
【问题描述】：

我希望有人可以帮助我。

我正在尝试创建一个程序来从输入文件读取变量到输出文件输入文件如下：员工的名字，两个双精度值，卖家的工资和他/她销售的总价值。

JOAO
450.00
1230.30

FDJSI
333.00
2.00

MAJDIIDFH
433.00
222.50

要求的卖家总工资为输出

这是我一直在尝试制作的代码

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
/**
 * A simple example program that reads a text file line by line and display each line.
 */
public class Salary {
public static void main(String[] args) {

    BufferedReader br = null;


    try {
        br = new BufferedReader(new FileReader("temp.txt"));
        String sellerName;


        while ((sellerName = br.readLine()) != null) {
            String  salary = br.readLine(); 
            String totalSale =br.readLine(); 
            double percentage  = 0.15;

            double  SaleAfterPercentage = totalSale * percentage; 
            //value of the total salary 
            double  finalSalary = salary +  SaleAfterPercentage ; 


        System.out.println(sellerName);
      //  System.out.println(salary);
     //    System.out.println(totalSale);
        }


    } catch (IOException e) {
        e.printStackTrace();

    } finally {
        try {
            if (br != null) {
                br.close();
            }
        } catch (IOException ex) {
            ex.printStackTrace();
            }
        }
    }
}

【问题讨论】：

你只有一个 Reader 对象......请在 Stackoverflow 上询问之前对写入文件进行一些研究如何

标签： java file input

【解决方案1】：

试试这个

BufferedReader br = null;
try {
    br = new BufferedReader(new FileReader("temp.txt"));
    String line = null;


    while ((line = br.readLine()) != null) {
        StringTokenizer  st = new StringTokenizer(line);

        String sellerName = st.nextToken();
        String salary = st.nextToken(); 
        String totalSale =st.nextToken(); 
        double percentage  = 0.15;

        double  SaleAfterPercentage = (Double.parseDouble(totalSale)) * percentage; 
        //value of the total salary 
        double  finalSalary = Double.parseDouble(salary) +  SaleAfterPercentage ; 


    System.out.println(sellerName);

    System.out.println(finalSalary);
     System.out.println(totalSale);
    }


} catch (Exception e) {
    e.printStackTrace();

} finally {
    try {
        if (br != null) {
            br.close();
        }
    } catch (Exception ex) {
        ex.printStackTrace();
        }
    }

阅读本文

JOAO 450.00 1230.30
FDJSI 333.00 2.00
MAJDIIDFH 433.00 222.50

【讨论】：