Main.java Source code

Introduction

Here is the source code for Main.java

Source

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

public class Main {
    public static void main(String[] args) {
        CharSequence inputStr = "a b c a b c";
        String patternStr = "a";
        String replacementStr = "x";

        Pattern pattern = Pattern.compile(patternStr);

        // Replace all occurrences of pattern in input
        Matcher matcher = pattern.matcher(inputStr);
        String output = matcher.replaceAll(replacementStr);
        System.out.println(output);

    }
}