私は最近、eclipse でバグの検出をセットアップして、それが生成するレポートを確認しました。すべての設定を可能な限り敏感になるように設定しました。ファイルに書き込む小さなアプリケーションを作成し、ストリームを閉じない場合、ストリームはそれを取得しますが、これはすべて良いことです。
ただし、特に出力にいくつかのバグがない場所で作成されたプロジェクトを使用すると、エラーはまったく発生しません (バグの検出に関して)。
誰かが自分のバージョンでこれを実行して、間違って設定されたバグを見つけたのか、それとも実際にバグを見つけられなかったのかを報告できるかどうか疑問に思っていましたか?
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class SpellUtil {
private final static String teenSpelling[] = {"Zero", "One", "Two", "Three",
"Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven",
"Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen",
"Seventeen", "Eighteen", "Nineteen"};
private final static String centSpelling[] = {"Twenty", "Thirty", "Forty",
"Fifty", "Sixty", "Seventy", "Eighty", "Ninety"};
private final static String suffixSpelling[] = {
"", // Dummy! no level 0 (added for nicer indexing in code)
"", // Nothing for level 1
" Thousand, ", " Million, ", " Billion, ", " Trillion, ", " Quadrillion, ",
" Quintillion, "};
public static String spell(int number) {
int rem, placeIndicator = 1;
boolean isNegative = false;
List<String> spelling = new ArrayList<String>();
if (number < 0) {
isNegative = true;
number = Math.abs(number);
}
while (number > 0) {
rem = number % 1000;
number = number / 1000;
spelling.add(suffixSpelling[placeIndicator]);
try {
spelling.add(spellBelow1000(rem));
} catch (SpellingException e) {
System.out.println(e.getMessage());
}
placeIndicator++;
}
StringBuilder sb = new StringBuilder();
if (isNegative) sb.append("Minus ");
for (int i = spelling.size() - 1; i >= 0; i--) {
sb.append(spelling.get(i));
}
return sb.toString();
}
private static String spellBelow1000(int number) throws SpellingException {
if (number < 0 || number >= 1000)
throw new SpellingException("Expecting a number between 0 and 999: " + number);
if (number < 20) {
// if number is a teen,
// find it in teen table and return its equivalent text (word).
return teenSpelling[number];
} else if (number < 100) {
// otherwise, if it is a cent,
// find the most (div) and least (rem) significant digits (MSD/LSD)
int div = (int) number / 10;
int rem = (int) number % 10;
if (rem == 0) {
// if LSD is zero, return the cent key word directly (like
// fifty).
return centSpelling[div-2];
} else {
// otherwise, return the text as cent-teen (like fifty-one)
return centSpelling[div-2] + "-" + teenSpelling[rem];
}
} else {
// otherwise, it is a mil;
// find it's MSD and remaining cent.
int div = number / 100;
int rem = (int) number % 100; // TODO will findbugs detect unnecessary (int)?
// Prepare the mil prefix:
String milText = teenSpelling[div] + " Hundred";
// decide whether to append the cent tail or not.
if (rem == 0) {
// if it does have a non-zero cent, that's it.
// return the mil prefix, for example three hundred:
return milText;
} else {
// otherwise, spell the cent and append it to mil prefix.
// (now, rem is a cent).
// For example, three Hundred and Sixty-Four:
return milText + " and " + spellBelow1000(rem);
}
}
}
}