How to replace characters in a java String?
- by ManBugra
I like to replace a certain set of characters of a string with a corresponding replacement character in an efficent way.
For example:
String sourceCharacters = "šdccŠÐCCžŽ";
String targetCharacters = "sdccSDCCzZ";
String result = replaceChars("Gracišce", sourceCharacters , targetCharacters );
Assert.equals(result,"Gracisce") == true;
Is there are more efficient way than to use the replaceAll method of the String class?
My first idea was:
final String s = "Gracišce";
String sourceCharacters = "šdccŠÐCCžŽ";
String targetCharacters = "sdccSDCCzZ";
// preparation
final char[] sourceString = s.toCharArray();
final char result[] = new char[sourceString.length];
final char[] targetCharactersArray = targetCharacters.toCharArray();
// main work
for(int i=0,l=sourceString.length;i<l;++i)
{
final int pos = sourceCharacters.indexOf(sourceString[i]);
result[i] = pos!=-1 ? targetCharactersArray[pos] : sourceString[i];
}
// result
String resultString = new String(result);
Any ideas?
Btw, the UTF-8 characters are causing the trouble, with US_ASCII it works fine.
