import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "(?<=')\\b|\\b(?=')";
final String string = "'whatever'\n"
+ "hello 'world' hello '%world%'\n"
+ "'foo' bar '%foo%' bar\n"
+ "'foo bar' '%foo bar%'\n"
+ "foo 'bar' but gar 'har' foo '%bar%' but gar '%har%'";
final String subst = "%";
final Pattern pattern = Pattern.compile(regex);
final Matcher matcher = pattern.matcher(string);
// The substituted value will be contained in the result variable
final String result = matcher.replaceAll(subst);
System.out.println("Substitution result: " + result);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html