question: private boolean hasSubstring ( final String value , final int start , final String substring ) { try { if ( start < 0 ) { return false ; } final int end = start + substring . length ( ) ; if ( end > value . length ( ) ) { return false ; } for ( int i = 0 , pos = start ; pos < end ; i ++ , pos ++ ) { if ( value . charAt ( pos ) != substring . charAt ( i ) ) { return false ; } } return true ; } catch ( final Exception e ) { logger . debug ( LocalizableMessage . raw ( "Unable to check that '%s' has substring '%s' at position %d: %s" , value , substring , start , e ) ) ; return false ; } }
target:  Indicates whether the provided value has the given substring at the specified position.