这是一个 java pig 拉丁语翻译家庭作业。我是 Java 的新手,在解决这个问题时遇到了很多困难。当我输入要读取和写入的文件时,出现数组索引越界错误。在这一点上,我什至不确定代码的翻译部分是否能正常工作。非常感谢任何有关更正错误和翻译代码的帮助。
while(true){
System.out.println("Enter a text file to translate to Pig Latin. Quit to end.");
fileName = keyboard.nextLine();
if (fileName.equalsIgnoreCase("quit")){
break; //End program.
}
System.out.println("Enter a file to write the translated file to.");
outputFile = keyboard.nextLine();
if (outputFile.equalsIgnoreCase("quit")){
break; //End program.
}
fileToTranslate = new File(fileName);
try {
fileReader = new Scanner(fileToTranslate);
} catch (FileNotFoundException ex) {
//Logger.getLogger(PigLatinTranslatorKukuruda.class.getName()).log(Level.SEVERE, null, ex);
System.out.println("File does not exist. Enter a new file.");
}
while(fileReader.hasNext()){
word = fileReader.next();
}
fileReader.close();
System.out.println(translator(word));
}
}
public static String translator(String string){
String[] wordsToTranslate = string.split(" ");
String word;
String translatedString = " ";
int first = 0;
for(int i = 0; i <= wordsToTranslate.length-1; i++){
word = wordsToTranslate[1];
if ((word.charAt(0) == 'a') || (word.charAt(0) == 'e') || (word.charAt(0) == 'i') ||
(word.charAt(0) == 'o') || (word.charAt(0) == 'u') || (word.charAt(0) == 'A') ||
(word.charAt(0) == 'E') || (word.charAt(0) == 'I') || (word.charAt(0) == 'O') ||
(word.charAt(0) == 'U')){
translatedString = word + "yay";
}
else{
for(int j = 0; j <= word.length()-1; j++){
if ((word.charAt(j) == 'a') || (word.charAt(j) == 'e') || (word.charAt(j) == 'i') ||
(word.charAt(j) == 'o') || (word.charAt(j) == 'u') ||
(word.charAt(j) == 'A') || (word.charAt(j) == 'E') ||
(word.charAt(j) == 'I') || (word.charAt(j) == 'O') ||
(word.charAt(j) == 'U')){
if (first == 0){
translatedString = word.substring(j) + word.substring(0, j) + "ay";
first = 1;
}
}
}
}
}
return translatedString;
}
现在我只是收到错误消息,不知道该怎么做。这应该写入一个文件,但我只是想立即输出它以查看它是否有效,但由于错误,我没有走那么远。谢谢
最佳答案
考虑您的代码的以下部分:
while(fileReader.hasNext()){
word = fileReader.next();
}
fileReader.close();
System.out.println(translator(word));
您的扫描仪正在逐字阅读(因为 .next()
)。
在 while 循环中,每次迭代都会覆盖 word
的值,因此在循环结束时,word
将等于 文件的最后一句话。
因此,您对 translate(word)
的调用只会将最后一个单词作为参数传递。也就是一个字。因此 word = wordsToTranslate[1];
肯定会抛出 IndexOutOfBounds
异常,因为没有第二个单词。
另外,我相信您打算在循环中使用 word = wordsToTranslate[i];
?
关于java - 如何纠正数组索引越界异常,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/55997148/