import java.util.regex.Pattern;
import java.util.regex.Matcher;
public class Main {
public static void main(String[] args) {
String source = "The quick brown fox jumps over the brown lazy dog.";
String find = "brown";
String replace = "red";
Pattern pattern = Pattern.compile(find);
Matcher matcher = pattern.matcher(source);
String output = matcher.replaceAll(replace);
System.out.println("Source = " + source);
System.out.println("Output = " + output);
}
}