我必须将此输入从文件拆分为向量并添加到向量。
文件输入
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
如何将字符串拆分为double和string并为向量提供输入?
答案 0 :(得分:3)
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]));
}
答案 1 :(得分:2)
使用Bufferedreader
作为分隔符,使用String.split()
分割从,
返回的字符串。并且还考虑使用ArrayList
代替Vector
,除非您关心线程安全,并且还要使您的集合具有通用性。
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);
}