Hi i nee some help with Java Strings. I need to writte a programm that will count the number of characters.Exampl: Input: cooomputer Output:c3omputer I have written only the part that counts the characters: import java.io.*; import java.lang.*; public class check2 { public static void main(String[] args) throws IOException { String text = ""; BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); String name; System.out.println("Schreiben Sie Ihre Name: "); text = in.readLine(); int oCount = 0; int index = -1; int i=0; String oStr="o"; int textLength = text.length(); index = text.indexOf(oStr); //for (int i=0;i<textLength;i++){ while(index>=0) { index = index + oStr.length(); index = text.indexOf(oStr,index); oCount++; } System.out.println(+oCount +oStr); } } his code works like this: input: cooomputer output:3o but this is not what i want.i want : Input: cooomputer Output:c3omputer thx in advance

Hi, Why dont you use the Java's String package? and just use the .length() method to get the length (number of characters) of the string I/P by the user ... or isnt this an option?

Hello- gurjit...Try reading the question again. What he really means is that he wants to find out the length of any substring of repeated characters and replace it by the number of times the character was repeated followed by one instance of the character. I won't bother telling you everything that's wrong with your code...It doesn't look like you really expected it to work. Here's a possible algorithm in pseudocode...I know this is homework but I'm feeling generous...And you did give it an attempt, and I'm sure my code will have a mistake or two in there you'll have to find and correct. String answer; String input; //get input, make sure it is not null //currchar keeps track of which character we are looking  at char currchar=input.charAt(0); //currnum keeps track of how many times we've seen  currchar (in a row) int currnum=1; //we start at 1 because we already checked out the  first character for (int i=1; i<input.length(); i++) {   //see if the next character is the same as the last  one.  If so, increment currnum.  If not, write the  appropriate string to the answer string and move on.   if (input.charAt(i)==currchar)   {     currnum++;   }   else   {     if (currnum>1)       answer=answer+currnum+currchar;     else       answer=answer+currchar;   } } return answer; Good luck, -SN

Hi everybody i got the solution.Ths is the code: --------------------------- import java.io.*; import java.lang.*; public class check1 { public static void main(String[] args) throws IOException { String text = ""; BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); String name; System.out.println("Schreiben Sie Ihre Name/Writte a word: "); text = in.readLine(); StringBuffer output = new StringBuffer(); int count = 1; int index = 0; char current; char next; for (current = text.charAt(index++); index < text.length(); index++) { // read ahead next = text.charAt(index); // compare characters if (next == current) { count++; } else { // new character found // at end of run, output and reset count if (count > 1) { output.append(count); count = 1; } output.append(current); } // make new character current current = next; } output.append(current); // output last character // print results System.out.println(output);} } ---------------------- This code does the following: Input: Coooomputting Output: C4ompu2ting

sorry guys for the bad loking of the code,but dunno how to posti it just as SN did. p.s. but important is that the code works :)