從.txt文件

Question

如何閱讀雙打我能夠讀取字符串變量，但它不會讀雙出於某種原因。我能做些什麼來使它讀取雙？

public class RundraiserApp 
{ 

/** 
* @param args 
* 
*/ 
public static void main(String[] args) 
{ 
    Fundraising[] dList = new Fundraising[10]; 

    String name = null; 
    String address = null; 
    String cityStateZip = null; 
    double donation = 0; 
    int i = 0, ctr = 0; 

    Scanner in; 
    File file = new File("Donations.txt"); 
    try 
    { 
     in = new Scanner(file); 

     while (in.hasNext() && i < dList.length) 
     { 
      name = in.nextLine(); 
      address = in.nextLine(); 
      cityStateZip = in.nextLine(); 
      donation = in.nextDouble(); 
      i++; 
     } 
     ctr++; 
    } 
    catch (FileNotFoundException e1) 
    { 
     e1.printStackTrace(); 
    } 
} 
} 

Answer 1

考慮以下

Name 
Address 
Zip 
2000.50 

更改捐贈喜歡你的文件結構。

donation = Double.parseDouble(in.nextLine());