[英]Reading And Writing to text file
I've written this code to read in a file and then ask for a mark, for each name in the file. 我已编写此代码以读取文件,然后为文件中的每个名称要求一个标记。 And if the mark is over 40 its a pass and below is a fail and writes each name to the corresponding file. 如果该标记超过40,则通过和以下标记均表示失败,并将每个名称写入相应的文件。 But I get an error at line 27 which: while(namesFile.hasNext()
here's my code: 但是我在第27行出现错误: while(namesFile.hasNext()
这是我的代码:
import java.io.*;
import java.util.*;
public class TestResults {
public static void main(String[] args) {
String errs = "";
Scanner k = new Scanner(System.in);
try {
try (
Scanner namesFile = new Scanner(new File("Names.txt"));
PrintWriter passFile = new PrintWriter("Pass.txt");
PrintWriter failFile = new PrintWriter("Fail.txt");) {
while (namesFile.hasNext()) {
try {
String tempLine = namesFile.nextLine();
System.out.println("Please Enter Mark For " + tempLine + " : ");
int mark = k.nextInt();
if (mark >= 40) {
passFile.println(tempLine + " " + mark + "%");
} else {
failFile.println(tempLine + " " + mark);
}
} catch (InputMismatchException ime) {
String valueStr = namesFile.next();
errs += "\n\t" + valueStr;
} finally {
namesFile.close();
passFile.close();
failFile.close();
}
}
}
} // Checks to see if file is there.
catch (IOException ioe) {
System.out.println("ERROR: " + ioe.getMessage());
}
}
}
public class TestResults {
public static void main(String[] args) {
Scanner namesFile;
PrintWriter passFile;
PrintWriter failFile;
String errs = "";
Scanner k = new Scanner(System.in);
try {
try {
namesFile = new Scanner(new File("D:/Names.txt"));
passFile = new PrintWriter("D:/Pass.txt");
failFile = new PrintWriter("D:/Fail.txt");
try {
while (namesFile.hasNext()) {
String tempLine = namesFile.nextLine();
System.out.println("Please Enter Mark For " + tempLine + " : ");
int mark = k.nextInt();
if (mark >= 40) {
passFile.println(tempLine + " " + mark + "%");
} else {
failFile.println(tempLine + " " + mark);
}
}
} catch (InputMismatchException ime) {
String valueStr = namesFile.next();
errs += "\n\t" + valueStr;
} finally {
namesFile.close();
passFile.close();
failFile.close();
}
}
catch(IOException ioe){
System.out.println("ERROR: " + ioe.getMessage());
}
} // Checks to see if file is there.
catch (Exception e) {
}
}
}
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