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Remove all punctuation!!!
Hi,
I have the following, very simple class that seperates strings in to words. I then use these words as part of an SQL statement to look up their meaning. I really need to remove all the punctuation so that the SQL statement runs. And also so words are looked up without such characters as "£*!. at the end. Can anyone show me how to write a simple method to do this please.
import java.util.StringTokenizer;
public class SeperateWords {
public DBConnection dbConnection=null;
/** Creates a new instance of SeperateWords */
public SeperateWords(String chat)
{
StringTokenizer words = new StringTokenizer(chat);
String[] Chat = new String[words.countTokens()
int i=0;
while (words.hasMoreTokens())
{
Chat[i] = words.nextToken().toString
i++;
}
dbConnection = new DBConnection(Chat);
}
}
Thanks
Garth
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Answers
Is there any way to remove all punctuation based on ASCII numbers so that all non alpha-numeric characters are removed from each word? I had already looked at the string tokenizer way but my statement was massive!! Also I have problems with the ' character as it thinks it begins or ends a string literal. Any suggestions?
>> all non alpha-numeric characters are removed
Try this:
public String removeChars ( String sSource )
{
StringBuffer sbTemp = new StringBuffer ( sSource ) ;
for ( int i = sbTemp.length () - 1 ; i >= 0 ; i -- )
if ( ! Character.isLetterOrDigit ( sbTemp.charAt ( i ) ) )
sbTemp.deleteCharAt ( i ) ; // end if, for
return sbTemp.toString () ;
}
Pass the word to it. It should return a word containing only alphabets/ digits, with the other characters removed.
String pattern = "(\\p{Alpha}*)(\\p{Punct}*
String text = "hello??";
String[] sp = text.split(pattern);
Pattern pat = Pattern.compile(pattern);
Matcher match = pat.matcher(text);
System.out.println(match.m
System.out.println(match.g
if(match.matches())
for(int i = 0; i <= match.groupCount(); i++){
System.out.println( i + ":" + match.group(i));
}
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by: maheshexpPosted on 2004-05-01 at 20:05:35ID: 10970039
while (words.hasMoreTokens())
{
String word1 = words.nextToken();
word1 = word1.replaceAll(".","");
word1 = word1.replaceAll("!","");
/* other characters to be replaced */
Chat[i] = words1;
i++;
}