/*	File: EditableString.java
	Developed for Problem Solving with Java, Koffman & Wolz
	Appears in Figure 5.18
*/


public class EditableString {
	// Data fields
	private String text;  // string being edited

	// Methods
  public void setText(String s) {
    text = s;
  }  

	// Searches editString for a target string.
	public int search(String target) {
		int index = text.indexOf(target);

    return index;
	}

	// Inserts a substring in editString.
	public String insert(String newString, int index) {
		// Join string before index, newString, and
		//	string after index.
		text = text.substring(0, index) + newString +
				text.substring(index);
    return text;
	}


	// Deletes a substring of editString.
	public String delete(String oldString) {
        // ...
           return text;
	}


	// Replaces one substring of editString (oldString) with another (newString).
	public String replace(String oldString, String newString) {
    // ...
    return text;
	}

  public String toString() {
    return text;
  }

} // class EditableString