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?

[ddmeightball]

Here is my code

/**
 * Title:Editor project
 * @author Matthew Davis
 * Class Info 1314
 * Date: November 22, 2004
 **/
 package Editor;
 import java.util.StringTokenizer;

 public class Editor 
 { 
  	String document;
  	String searchText;
  	String replacementText;

 public Editor() 
  {
  }//end constructor 
  
 public void setDocument(String recdocument)
 	{
		document=recdocument;
    }
 
 public String getDocument()
 	{
		return document;
    }

public String replace(String searchText, String replacementText)
	{
          String [] token = new String[10];

          StringTokenizer sTokens = new StringTokenizer(document, ",");

          int count = 0;
          while(sTokens.hasMoreTokens()) 
          	{
      		  	token[count++] = sTokens.nextToken().trim();
     	    }

          String resultStr = "";
          for(int i = 0; i < count; i++)
          	{
          		 if(token[i].equalsIgnoreCase(searchText))
         	 	 	{
         	 	 		resultStr = resultStr.replaceAll(token[i],replacementText);
        	  		}
        	  	 else
        	  	 	{
        	  	 		resultStr += token[i] + ", ";
        	  		}
      	    }
        	 
          resultStr = resultStr.substring(0, resultStr.trim().length() - 1);
          return resultStr.toString();
	}

public String replace(String document, String searchText, String replacementText)
	{
          String [] token = new String[10];

          StringTokenizer sTokens = new StringTokenizer(document, ",");

          int count = 0;
          while(sTokens.hasMoreTokens()) 
          	{
      		  	token[count++] = sTokens.nextToken().trim();
     	    }

          String resultStr = "";
          for(int i = 0; i < count; i++)
          	{
          		 if(token[i].equalsIgnoreCase(searchText))
         	 	 	{
         	 	 		resultStr = resultStr.replaceAll(token[i],replacementText);
        	  		}
        	  	 else
        	  	 	{
        	  	 		resultStr += token[i] + ", ";
        	  		}
      	    }
        	 
          resultStr = resultStr.substring(0, resultStr.trim().length() - 1);
          return resultStr.toString();
	}

}

[brown monkey]

search for RegEx or Regular Expression. Dunno this thing but it will help you.

edit: Please use code tags when posting code. [code][/code]

[ddmeightball]

Can anyone else help me?

[vbNeo]

Use the String types methods, look it up on the java docs.

[ddmeightball]

Originally posted by vbNeo
Use the String types methods, look it up on the java docs.

what do you mean by string types methods and what are the java docs?

I am very new and java and just have been having some trouble even writing anything.

[Dillinger4]

Java Docs. http://java.sun.com/reference/api/index.html

[ddmeightball]

Thank you everyone that helped me. I figured it out. My main problem was my delimiter on my string tokenizer. thanks again for the help