i receive the folloowing error please some one help to slove
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
java.lang.String.substring(Unknown Source)
com.kaldin.company.filter.CompanyFilter.doFilter(CompanyFilter.java:43)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs.
Apache Tomcat/6.0.18