Please figure out the error

Question

hi all,
heres a problem I can't it out can any one help me.
Its not printing the WieldValue5
the String here it should ignore "SXGI", "F"'s, and "E" and it should print ControlID1
WieldType1
WieldValue1
ControlID5
WieldType5
WieldValue5
its not printing "WieldValue5"
public class Example {
     public static void main(String[] args) throws Exception {
          String strReq = "SXGIDFControlID1FWieldType1FWieldValue1F" +
                               "ControlID2FWieldType2FWieldValue2F" +
                               "ControlID3FWieldType3FWieldValue3F" +
                               "ControlID4FWieldType4FWieldValue4F" +
                               "ControlID5FWieldType5FWieldValue5E";
          int iIndexF = strReq.indexOf("F");
          String strTemp = strReq.substring(iIndexF + 1);
          int iIndexE = -1;
          while(-1 != iIndexF) {
               iIndexF = strTemp.indexOf("F");
               if(-1 == iIndexF) {
                    throw new Exception("Error in ControlID");
                    String strControlID = strTemp.substring(0, iIndexF);
                    System.out.println(strControlID);
               int iIndexFieldType = strTemp.indexOf("F", iIndexF + 1);
               if(-1 == iIndexFieldType) {
                    throw new Exception("Error in FieldType");
                    String strFieldType = strTemp.substring(iIndexF + 1, iIndexFieldType);
                    System.out.println(strFieldType);
               int iIndexFieldValue = strTemp.indexOf("F", iIndexFieldType + 1);
               String strFieldValue;
               if(-1 == iIndexFieldValue) {
                    throw new Exception("Error in FieldValue");
               strFieldValue = strTemp.substring(iIndexFieldType + 1, iIndexFieldValue);
               System.out.println(strFieldValue);
               iIndexF = iIndexFieldValue;
               if(-1 == iIndexF) {
                    iIndexE = strTemp.indexOf("E", iIndexFieldType + 1);
                    if(-1 == iIndexE) {
                         throw new Exception("Error in FieldValue");
                    strFieldValue = strTemp.substring(iIndexFieldType + 1, iIndexE);
                    System.out.println(strFieldValue);
                    iIndexFieldType = iIndexE;
               strTemp = strTemp.substring(iIndexFieldValue + 1);
               System.out.println(strTemp);
}null
null

Answer 1

Based on the information you've provided, here's a stripped down version:
    String strReq = "SXGIDFControlID1FWieldType1FWieldValue1F" +
                    "ControlID2FWieldType2FWieldValue2F" +
                    "ControlID3FWieldType3FWieldValue3F" +
                    "ControlID4FWieldType4FWieldValue4F" +
                    "ControlID5FWieldType5FWieldValue5E";
    int    beg   = 0, end   = 0;
    while ( true ) {
      beg = strReq.indexOf("F",beg);
      end = strReq.indexOf("F",beg+1);
      if (beg != -1) {
        if ( end == -1) {
          end = strReq.indexOf("E",beg+1);
          if ( end == -1)
            end = strReq.length();
        System.out.println(strReq.substring(beg+1,end));
      else
        break;
      beg = end;
    }