public void METHOD_1 ( TYPE_1 item ) { if ( item == null ) throw new TYPE_2 ( ) ; TYPE_3 < TYPE_1 > . TYPE_4 VAR_1 = first ; first = new TYPE_4 ( ) ; first . item = item ; VAR_2 = VAR_1 ; if ( isEmpty ( ) ) VAR_3 = first ; else VAR_4 = first ; VAR_5 = null ; ( VAR_6 ) ++ ; }

public void METHOD_1 ( TYPE_1 item ) { if ( item == null ) throw new java.lang.NullPointerException ( ) ; TYPE_3 < TYPE_1 > . TYPE_4 VAR_1 = first ; first = new TYPE_4 ( ) ; first . item = item ; VAR_2 = VAR_1 ; if ( isEmpty ( ) ) VAR_3 = first ; else VAR_4 = first ; VAR_5 = null ; ( VAR_6 ) ++ ; }
