我正在读取两个文件,我想为文件一中的每一行总结文件二中的所有行。到目前为止,我已经编写了下面的代码,但它只适用于文件中的第一行。下面是我的代码和示例文件。注意我得到java.util.NoSuchElementException
import java.io.*;
import java.util.Scanner;
import java.util.StringTokenizer;
public class knn {
public static void main (String[]args)throws IOException{
Scanner in = new Scanner(new FileInputStream("knn.txt"));
Scanner in2 = new Scanner(new FileInputStream("knn2.txt"));
while(in.hasNextLine()){
String linetoprocess = in.nextLine();
StringTokenizer st = new StringTokenizer(linetoprocess, " :");
while(in2.hasNextLine()){
String linetoprocess2 = in2.nextLine();
StringTokenizer st2 = new StringTokenizer(linetoprocess2, " :");
System.out.print("("+st.nextToken()+","+st2.nextToken()+"), ");
System.out.print("("+st.nextToken()+","+st2.nextToken()+"), ");
System.out.print("("+st.nextToken()+","+st2.nextToken()+"), ");
System.out.print("("+st.nextToken()+","+st2.nextToken()+"), ");
System.out.print("("+st.nextToken()+","+st2.nextToken()+"), ");
System.out.print("("+st.nextToken()+","+st2.nextToken()+"), ");
System.out.print("("+st.nextToken()+","+st2.nextToken()+"), ");
System.out.print("("+st.nextToken()+","+st2.nextToken()+"), ");
System.out.println("("+st.nextToken()+","+st2.nextToken()+")");
}
}
}
knn.txt
1 1:5.1 2:3.5 3:1.4 4:0.2
1 1:4.9 2:3.0 3:1.4 4:0.2
1 1:4.7 2:3.2 3:1.3 4:0.2
knn2.txt
1 1:5.4 2:3.7 3:1.5 4:0.2
1 1:4.8 2:3.4 3:1.6 4:0.2
1 1:4.8 2:3.0 3:1.4 4:0.1
1 1:4.3 2:3.0 3:1.1 4 :0.1