Recieving a string to search, then replace

[ddmeightball]

I am creating a class called Editor that is able to perform a search/replace function on a document (a sentence or paragraph).

The Editor class includes two constructors:

• The first has no parameters
• The second has one parameter (the document to be searched)

The class includes a setDocument() and a getDocument() method.

The class includes two overloaded versions of a method called replace():

• The first has two parameters (search text, replacement text) and works on the current document.
• The second receives three parameters (the document to be searched, the search text, the replacement text).
• The replace method returns the new document as a String.

The replace method searches the document for instances of the search text, replaces that text with the replacement text.
Example:

document: “Rich is here”
search text: “is”
replacement text: “was”
result: “Rich was here”

What I need to know is how would I go about searching, then replacing the text in the string that I am searching?