將輸入分解爲矢量

Question

我必須將此輸入從文件分解爲矢量並添加到矢量中。

文件輸入

1,375,seller 
    1,375,sellers 
    1,375,send 
    1,375,sister 
    1,375,south 
    1,375,specific 
    1,375,spoiler 
    1,375,stamp 
    1,375,state 
    1,375,stop 
    1,375,talked 
    1,375,tenant 
    1,375,today 
    1,375,told 

    FileInputStream fstream = new FileInputStream("e://inputfile.txt"); 
     // Use DataInputStream to read binary NOT text. 
     BufferedReader br = new BufferedReader(new InputStreamReader(fstream)); 
     String strLine; 

     while ((strLine = br.readLine()) != null) 
     { 
      Vector dataPoints = new Vector(); 
      dataPoints.add(br); 


      dataPoints.add(new DataPoint()); 
     } 


    ------ public DataPoint(double x, double y, String name) this is the method 

如何將字符串分割成雙人牀和串並給予輸入向量？

Answer 1

使用String#split(String)：

Vector<DataPoint> dataPoints = new Vector<DataPoint>();   
while ((strLine = br.readLine()) != null) { 
    String[] array = strLine.split(","); 
    dataPoints.add(new DataPoint(Double.parseDouble(array[0]), Double.parseDouble(array[1]), array[2])); 
} 

Answer 2

就分割字符串使用String.split()使用,爲分隔符從Bufferedreader返回。也考慮使用ArrayList而不是Vector，除非您關心線程安全並且還使您的集合成爲通用的。

Vector<DataPoint> dataPoints = new Vector<DataPoint>(); 
while ((strLine = br.readLine()) != null) 
     { 
      String[] arr = strLine.split(","); 
      DataPoint point = new DataPoint(Double.valueOf(arr[0]), Double.valueOf(arr[1]), arr[2]); 
      dataPoints.add(point); 
     }