Removing Duplicate Whitespace in a String

  
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
  public static void main(String[] argv) throws Exception {
  }

  public static CharSequence removeDuplicateWhitespace(CharSequence inputStr) {
    String patternStr = "\\s+";
    String replaceStr = " ";
    Pattern pattern = Pattern.compile(patternStr);
    Matcher matcher = pattern.matcher(inputStr);
    return matcher.replaceAll(replaceStr);
  }
}

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Removing Duplicate Whitespace in a String : String Operation « Regular Expressions « Java

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