Java Programmers naomba Msaada smsLib Error

[beth]

Najaribu kutengeneza program flani yenye feature ya kupokea sms. sasa baada ya kukamilisha hatua zote ninapojaribu ku-run inaniletea error hii "STRING OUT OF RANGE: -12"

java.lang.StringIndexOutOfBoundsException: [COLOR=#ff0000][B]String index out of range: -12[/B][/COLOR]
    at java.lang.String.substring(String.java:1954)
    at org.smslib.modem.ModemGateway.readMessagesPDU(ModemGateway.java:552)
    at org.smslib.modem.ModemGateway.readMessages(ModemGateway.java:213)
    at org.smslib.Service.readMessages(Service.java:501)
    at org.smslib.Service.readMessages(Service.java:389)
    at Getaway.ReceiverEngene.doIt(ReceiverEngene.java:118)
    at Getaway.ReceiverEngene.main(ReceiverEngene.java:188)

Naombeni msaada tafadhari

 

[Cannabis]

una sms yoyote kwenye hiyo Modem yako?..kwa kuangalia haraka naona hiyo readMessages itakuwa inajaribu kusoma SMS wakati hamna kitu

 

[upendodaima]

Kwann usiweke mfano wa code zako na sio hiyo error message ili iwe rahisi kuchambua tatizo lilipo?

 

[ub16]

You are trying to access an index that is out of range, angalia the string you are trying to manipulate it could be empty or short, and many cases than most people would like to admit huwa ni just off-by-one error