JAVA Manipulate a String using regular expressions

// Example 1, remove all instances of a word with another in a String.

// Example 2, remove all white spaces from a String

public static String manipulateString(String s){

  String result = s;

  

  //1 replace all instances of the word foo with the word bee 

  result = result.replaceAll("(?:foo)", "bee");

  // remove all white space

  result = result.replaceAll("\\s+", "");

   

  return result;

}