Question

Java 如何将一个文件中的两列数据分别读到两个数组中？

数据如下：
22.000 13.833
22.100 14.448
22.200 14.745
22.300 14.883
22.400 14.907
22.500 14.838
22.600 15.063

Answer 1

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class ReadTest {

public static void main(String[] args) {

final String file = "src.txt";

List<String> firstColList = new ArrayList<String>();
List<String> secondColList = new ArrayList<String>();

try {
BufferedReader bf = new BufferedReader(new FileReader(file));

String content = null;

while((content = bf.readLine()) != null){
String ary[] = content.trim().split("\\s+");

firstColList.add(ary[0]);
secondColList.add(ary[1]);
}

bf.close();

} catch (IOException e) {
e.printStackTrace();
}

String[] firstColAry = firstColList.toArray(new String[0]);
String[] secondColAry = secondColList.toArray(new String[0]);

System.out.println("The item in the array is: ");
for(int i = 0; i < firstColAry.length; i++){
System.out.println(firstColAry[i] + "\t" + secondColAry[i]);
}

}

}

---------------测试
The item in the array is:
22.000 13.833
22.100 14.448
22.200 14.745
22.300 14.883
22.400 14.907
22.500 14.838
22.600 15.063

Answer 2

如果是普通的字符串哥是 用.substring(i)
如果是表格的话 用jxl或者poi应该方便点