java 在java中将String转换为另一个语言环境
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Convert String to another locale in java
提问by RYN
Hi
I need to convert Arabic/Persian Numbers to it's English equal (for example convert "?" to "2")
How can I do this?
嗨，
我需要将阿拉伯/波斯数字转换为英语相等（例如将“？”转换为“2”）
我该怎么做？
Thanks
谢谢
回答by Peter Lawrey
I suggest you have a ten digit lookup String and replace all the digits one at a time.
我建议你有一个十位数的查找字符串并一次替换所有数字。
public static void main(String... args) {
System.out.println(arabicToDecimal("??"));
}
private static final String arabic = "\u06f0\u06f1\u06f2\u06f3\u06f4\u06f5\u06f6\u06f7\u06f8\u06f9";
private static String arabicToDecimal(String number) {
char[] chars = new char[number.length()];
for(int i=0;i<number.length();i++) {
char ch = number.charAt(i);
if (ch >= 0x0660 && ch <= 0x0669)
ch -= 0x0660 - '0';
else if (ch >= 0x06f0 && ch <= 0x06F9)
ch -= 0x06f0 - '0';
chars[i] = ch;
}
return new String(chars);
}
prints
印刷
42
The reason for using the strings as a lookup is that other characters such as .-,would be left as is. In fact a decimal number would be unchanged.
使用字符串作为查找的原因是其他字符（例如）.-,将保持原样。事实上，十进制数将保持不变。
回答by Navas Basheer
I achived this by java.math.BigDecimalClass, Below is the code snippet
我通过java.math.BigDecimal类实现了这一点，下面是代码片段
String arabicNumerals = "????.??";
String englishNumerals = new BigDecimal(arabic).toString();
System.out.println("Number In Arabic : "+arabicNumerals);
System.out.println("Number In English : "+englishNumerals);
Result
结果
Number In Arabic : ????.??
Number In English : 4242.42
NB :The Above code will not work if there is any charactors other than numeric digits in arabicNumerals, For Eg : ?,???.?? will result in java.lang.NumberFormatException, so you may remove other charactors using Character.isDigit(char ch)in another logic and use the above code. All normal cases are working charmly !!
注意：如果 arabicNumerals 中有数字以外的任何字符，则上述代码将不起作用，例如：?,???.?? 将导致java.lang.NumberFormatException，因此您可以删除其他Character.isDigit(char ch)逻辑中使用的其他字符并使用上述代码。所有正常情况下都可以正常工作！！
Good Day
再会
回答by Kishath
I found a simpler and faster way which includes the two arabic code pages too.
我找到了一种更简单快捷的方法，其中也包括两个阿拉伯语代码页。
public static String convertToEnglishDigits(String value)
{
String newValue = value.replace("?", "1").replace("?", "2").replace("?", "3").replace("?", "4").replace("?", "5")
.replace("?", "6").replace("7", "?").replace("?", "8").replace("?", "9").replace("?", "0")
.replace("?", "1").replace("?", "2").replace("?", "3").replace("?", "4").replace("?", "5")
.replace("?", "6").replace("?", "7").replace("?", "8").replace("?", "9").replace("?", "0");
return newValue;
}
It will return the numbers in English format or vise versa if you change the replace from.
("?", "0") to ("0","?")
如果您更改替换，它将以英文格式返回数字，反之亦然。
("?", "0") 到 ("0","?")
回答by Sileria
Try this guys:
试试这个家伙：
/**
* Utility class to detect arabic languages and convert numbers into arabic digits.
*
* @author Ahmed Shakil
* @date 09-24-2012
*/
public final class ArabicUtil {
private static final char[] DIGITS = {'\u0660','\u0661','\u0662','\u0663','\u0664','\u0665','\u0666','\u0667','\u0668','\u0669'};
/**
* Returns <code>true</code> if the provided language code uses arabic characters; othersise <code>false</code>.
* @param lang ISO language code.
* @return <code>true</code> if the provided language code uses arabic characters; othersise <code>false</code>
*/
public static boolean isArabic (String lang) {
return "ar".equals(lang) || "fa".equals(lang) || "ur".equals(lang);
}
/**
* Convert digits in the specified string to arabic digits.
*/
public static String convertDigits (String str) {
if (str == null || str.length() == 0) return str;
char[] s = new char[str.length()];
for(int i =0;i<s.length;i++)
s[i] = toDigit( str.charAt( i ) );
return new String(s);
}
/**
* Convert single digit in the specified string to arabic digit.
*/
public static char toDigit (char ch) {
int n = Character.getNumericValue( (int)ch );
return n >=0 && n < 10 ? ARABIC[n] : ch;
}
/**
* Convert an int into arabic string.
*/
public static String toString (int num) {
return convertDigits( Integer.toString( num ) );
}
}
BTW there is a difference between arabic digits vs. urdu/farsi: Arabic:
顺便说一句，阿拉伯数字与乌尔都语/波斯语之间存在差异：阿拉伯语：
private static final char[] ARABIC = {'\u0660', '\u0661', '\u0662', '\u0663', '\u0664', '\u0665', '\u0666', '\u0667', '\u0668', '\u0669'};
Urdu or Farsi:
乌尔都语或波斯语：
private static final char[] URDU_FARSI = {'\u06f0', '\u06f1', '\u06f2', '\u06f3', '\u06f4', '\u06f5', '\u06f6', '\u06f7', '\u06f8', '\u06f9'};
回答by Tomasz Nurkiewicz
First make it work, then make it look nice ;-)
首先让它工作，然后让它看起来不错;-)
public static char persianDigitToEnglish(char persianDigit) {
return (char) (((int)persianDigit) - ((int)'?' - (int)'2'));
}
Works for 2, unfortunately I don't know other Persian digits, could You give it a try?
适用于2，不幸的是我不知道其他波斯数字，您可以尝试一下吗？
assertThat(persianDigitToEnglish('?')).isEqualTo('2');
EDIT: (based on Peter LawreyString version, but uses StringBuilder)
编辑：（基于Peter LawreyString 版本，但使用StringBuilder）
public static String persianDigitToEnglish(String persianNumber) {
StringBuilder chars = new StringBuilder(persianNumber.length());
for (int i = 0; i < persianNumber.length(); i++)
chars.append(persianDigitToEnglish(persianNumber.charAt(i)));
return chars.toString();
}
private static char persianDigitToEnglish(char persianDigit) {
return (char) (((int)persianDigit) - ((int)'?' - (int)'2'));
}
回答by sujith s
it will work with decimal point also ..
它也适用于小数点..
public class mainsupport {
public static void main(String args[]){
// String Numtoconvert="15.3201" ;
// String Numtoconvert="458" ;
String Numtoconvert="??????" ; // integer value 87.598
System.out.println(getUSNumber(Numtoconvert));
}
private static String getUSNumber(String Numtoconvert){
NumberFormat formatter = NumberFormat.getInstance(Locale.US);
try {
if(Numtoconvert.contains("?"))
Numtoconvert=formatter.parse(Numtoconvert.split("?")[0].trim())+"."+formatter.parse(Numtoconvert.split("?")[1].trim());
else
Numtoconvert=formatter.parse(Numtoconvert).toString();
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return Numtoconvert;
}
prints 87.598
打印 87.598
回答by Mehdi Khademloo
so trivial answer:
如此琐碎的答案：
public static String convertNumbersToPersian(String str)
{
String answer = str;
answer = answer.replace("1","?");
answer = answer.replace("2","?");
answer = answer.replace("3","?");
answer = answer.replace("4","?");
answer = answer.replace("5","?");
answer = answer.replace("6","?");
answer = answer.replace("7","?");
answer = answer.replace("8","?");
answer = answer.replace("9","?");
answer = answer.replace("0","?");
return answer;
}
and
和
public static String convertNumbersToEnglish(String str) {
String answer = str;
answer = answer.replace("?", "1");
answer = answer.replace("?", "2");
answer = answer.replace("?", "3");
answer = answer.replace("?", "4");
answer = answer.replace("?", "5");
answer = answer.replace("?", "6");
answer = answer.replace("?", "7");
answer = answer.replace("?", "8");
answer = answer.replace("?", "9");
answer = answer.replace("?", "0");
return answer;
}
回答by Sepehr Nozaryian
i think the best way is to change the Locale to what you want for example,
for double number :
我认为最好的方法是将 Locale 更改为您想要的，例如，
对于 double number ：
NumberFormat fmt = NumberFormat.getNumberInstance(Locale.US);
d = Double.parseDouble(s);
for String :
对于字符串：
NumberFormat.getNumberInstance(Locale.US).format(s);
or DecimalFormat:
或十进制格式：
double num;
DecimalFormat df = new DecimalFormat("###.###");
df.setDecimalFormatSymbols(new DecimalFormatSymbols(Locale.US));
String s = df.format(num);
回答by Flovettee
Character.getNumericValue(ch)saved my life, generic solution for any locale.
Character.getNumericValue(ch)挽救了我的生命，适用于任何语言环境的通用解决方案。
static String replaceNonstandardDigits(String input) {
if (input == null || input.isEmpty()) {
return input;
}
StringBuilder builder = new StringBuilder();
for (int i = 0; i < input.length(); i++) {
char ch = input.charAt(i);
if (Character.isDigit(ch) && !(ch >= '0' && ch <= '9')) {
int numericValue = Character.getNumericValue(ch);
if (numericValue >= 0) {
builder.append(numericValue);
}
} else {
builder.append(ch);
}
}
return builder.toString();
}
回答by Hend
Use Locale class to convert numbers.
使用 Locale 类来转换数字。
Locale locale = new Locale("ar");
String formattedArabic = format(locale, "%d", value));
