question: @ Override public String toString ( ) { String str = "" ; for ( Effect e : effects . keySet ( ) ) { str += e . toString ( ) ; str += " [" + effects . get ( e ) + "]" ; str += "," ; } if ( ! effects . isEmpty ( ) ) { str = str . substring ( 0 , str . length ( ) - 1 ) ; } return str ; }
target:  Returns a string representation of the rule case.