public void METHOD_1 ( TYPE_1 item ) { TYPE_2 < TYPE_1 > . TYPE_3 node = new TYPE_3 ( item , null , VAR_1 ) ; if ( ( VAR_1 ) != null ) VAR_2 = node ; VAR_1 = node ; if ( ( first ) == null ) first = VAR_1 ; ( count ) ++ ; }

public void METHOD_1 ( TYPE_1 item ) { if ( item == null ) throw new java.lang.NullPointerException ( ) ; TYPE_2 < TYPE_1 > . TYPE_3 node = new TYPE_3 ( item , null , VAR_1 ) ; if ( ( VAR_1 ) != null ) VAR_2 = node ; VAR_1 = node ; if ( ( first ) == null ) first = VAR_1 ; ( count ) ++ ; }
