我正在尝试从文件导入项目并将其放入 3 个不同的数组中，但出现一些错误。这是我到目前为止的代码:
package project1;
import java.io.File;
import java.io.IOException;
import java.util.Scanner;
public class Project1 {
/**
* @param args the command line arguments
* @throws java.io.IOException
*/
public static void main(String[] args) throws IOException {
fillArray();
}
public static void fillArray() throws IOException {
Scanner teamList = new Scanner(new File("baseball_teams.txt"));
String[] teamName = new String[35];
int[] teamRank = new int[35];
double[] teamWinPercentage = new double[35];
int i = 0;
while (teamList.hasNext()) {
teamRank[i] = teamList.nextInt();
teamName[i] = teamList.next();
teamWinPercentage[i] = teamList.nextDouble();
i++;
}
}
}
当我尝试运行该程序时收到此错误:
run:
Exception in thread "main" java.util.InputMismatchException
at java.util.Scanner.throwFor(Scanner.java:909)
at java.util.Scanner.next(Scanner.java:1530)
at java.util.Scanner.nextDouble(Scanner.java:2456)
at project1.Project1.fillArray(Project1.java:36)
at project1.Project1.main(Project1.java:23)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)
这是文件的内容:
1
Boston
0.605
2
St.Louis
0.596
3
Oakland
0.587
4
Atlanta
0.584
5
Pittsburgh
0.577
6
Detroit
0.567
7
Cleveland
0.564
8
Dodgers
0.564
9
Tampa Bay
0.559
10
Texas
0.558
11
Cincinnati
0.552
12
Washington
0.531
13
Kansas City
0.531
14
Baltimore
0.525
15
Yankees
0.525
16
Arizona
0.500
17
Angels
0.481
18
San Diego
0.469
19
Giants
0.469
20
Mets
0.457
21
Colorado
0.457
22
Milwaukee
0.457
23
Toronto
0.457
24
Philadelphia
0.451
25
Seattle
0.438
26
Minnesota
0.407
27
Cubs
0.407
28
Sox
0.389 29
Miami
0.383
30
Houston
0.315
如果有任何提示，我将不胜感激!
谢谢!
最佳答案
看来您正在对 .next*() (.next() 和 .nextInt())进行两次调用，即使在循环条件中您只检查下一个。
如果我对你的文件的假设是正确的
1 teamName1 100.0
2 teamName2 43.3
3 teamName3 43.6
4 teamName4 34.4
5 teamName5 23.2
.
.
.
如果是这样，那么也许尝试一次读取一行
int i = 0;
String[] ln = null;
while(teamList.hasNext()){
ln = String.split(teamList.nextLine()); // default is split on ' ' character
teamRank[i] = Integer.valueOf(ln[0]);
teamName[i] = ln[1];
teamWinPercentage[i] = Double.valueOf(ln[2]);
++i;
}
关于java - 在java中将文件导入到二维数组，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21558092/