从文本文件中读取并保存并将其打印到文本中

问题描述：

我想创建一个程序来读取输入文件中的变量以输出文件输入文件如下员工的名字，两个双精度值，卖家的薪水和他/她出售的总价值。

JOAO 
450.00 
1230.30 

FDJSI 
333.00 
2.00 

MAJDIIDFH 
433.00 
222.50

所要求卖方的工资总额是输出

这是我一直在努力使

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(); 
      } 
     } 
    } 
}

你只有一个Reader对象...如何在写一个文件之前做一些研究，然后再请求Stackoverflow，请 –

答

尝试这个

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(); 
     } 
    }

要阅读这篇

代码

JOAO 450.00 1230.30 
FDJSI 333.00 2.00 
MAJDIIDFH 433.00 222.50

从文本文件中读取并保存并将其打印到文本中

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