JAVA怎样从txt文件中读入数据到相应类型的数组
数据格式如下：
年份 吉安 峡江 桑庄 寨头
5 4
80 101.5 121.8 227.2 110
79 81.9 101.5 72.4 106
78 59.5 70.4 41.3 59.7
77 79 76.9 85.1 148.6 

写的程序如下，抛出异常
[code=Java][/code]
import java.io.*;
public class analysis {
  public static void main(String[] args){
  String path=null;
  String s1;
  String s2[];
  int m,n;
  Double array[][]; 
  FileReader in=null;
  BufferedReader input=null;
  path="D:\\JavaProject\\analysis\\src\\Data.txt";
  try{
  in=new FileReader(path);
  input=new BufferedReader(in);
  }
  catch(FileNotFoundException e1){
  System.out.println("");
  System.exit(-1);
  }
  try{ 
  s1=input.readLine();
  s2=s1.split(" ", 0);
for(int i=0;i<s2.length;i++){
System.out.println(s2[i]);
}
s1=input.readLine();
  s2=s1.split(" ", 0);
  m=Integer.valueOf(s2[0]);
  n=Integer.valueOf(s2[1]);
  array=new Double[n][m];
for(int i=0;i<n;i++){
s1=input.readLine();
s2=s1.split(" ", 0);
for(int j=0;i<s2.length;i++){
array[i][j]=Double.valueOf(s2[j]);
System.out.println(array[i][j]);
}
}
  input.close();
  in.close();
  }
  catch(IOException e2){
  System.out.println("");
  System.exit(-1); 
  }
  } 
}

运行结果：
年份 吉安 峡江 桑庄 寨头
Exception in thread "main" java.lang.NumberFormatException: For input string: ""
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:504)
at java.lang.Integer.valueOf(Integer.java:582)
at analysis.main(analysis.java:29)


------解决方案--------------------
中间有多个连续的空格吧？
------解决方案--------------------
[code=Java][/code]import java.io.*;

public class analysis {
public static void main(String[] args) {
String path = null;
String s1;
String s2[];
int m, n;
Double array[][];
FileReader in = null;
BufferedReader input = null;
try {
in = new FileReader("Data.txt");
input = new BufferedReader(in);
} catch (FileNotFoundException e1) {
System.out.println("");
System.exit(-1);
}
try {
s1 = input.readLine();
s2 = s1.split(" ", 0);
for (int i = 0; i < s2.length; i++) {
System.out.println(s2[i]);
}
s1 = input.readLine();
s2 = s1.split(" ", 0);
m = Integer.valueOf(s2[0]);//m列
n = Integer.valueOf(s2[1]);//n行
System.out.println("m="+m+" "+"n="+n);
array = new Double[n][m];
for (int i = 0; i < n; i++) {
s1 = input.readLine();
s2 = s1.split(" ", 0);
for (int j = 0; j < s2.length; j++) {
array[i][j] = Double.valueOf(s2[j]);
System.out.print(array[i][j]+" ");
}
System.out.println();
}
input.close();
in.close();
} catch (IOException e2) {
System.out.println("");
System.exit(-1);
}
}
}


txt文档中数据之间只需一个空格
------解决方案--------------------