Help with some methods !! Please..
Hi !!
My University teacher gave me an exercize where he askes to calculate the minimum,medium and maximum cubic capacities in an ArrayList<Cars> carList .
I didn't find problems to make a new method for searching the minum and maximum cubic capacities,but I could not think a way to make the method for the Average cubic capacity value.
For the min and max searches I wrote down :
public Car searchForMinCubicCapacityValue()
Car car= carList.get(0);
for(Car aCar : carList)
if(aCar.getCubicCapacity() <= car.getCubicCapacity())
minimumCar = aCar; (where minimumCar is an Instance Variable)
return minimumCar;
The same is for the method searchForMaxCubicCapacityValue() but I put >= indeed and I have used the Instance Variable maximumCar.
How could I write down the method searchForAverageCubicCapacityValue() ?
I really need your help please !...
I have to know for next week test ! In this test I'll have to write down a class with these same methods and others !
Thanks in advance !
Sorry ! I'll change the name of my 3 methods !
I would calculate by hand an average just adding up
the cubic capacities and then dividing the result of
this addition by the total number of cars.Right.
But I have tried to write down this one in the method
for an Average cubic capacity but I get the same
result of the maximum cubic capacity.Well, then the Java you wrote doesn't do what you described above. If you show the code, someone can help you find your error.
When you post code, please use[code] and [/code] tags as described in Formatting tips on the message entry page. (http://forum.java.sun.com/help.jspa?sec=formatting) It makes it much easier to read.
But I know that
there is an average value in my ArrayList !Of course there is. Any collection of values has an average.
I think this thing happens because the result of the
division is a number that doesn't exist in my
ArrayList.The average may very well not be a numbre in the list. If the list contains only 0 and 100, the average is 50, which is not in the list.
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>> I'm trying to do some calculations in a form with
code like this -
>>
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>> Murray --- ICQ 71997575
>> Adobe Community Expert
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VALUES (To_Date('01/30/2010','mm/dd/yyyy'),2010,0,To_Date('01/29/2010','mm/dd/yyyy'),4,2010,7651,10988);
INSERT INTO caln
VALUES (To_Date('01/31/2010','mm/dd/yyyy'),2010,0,To_Date('01/29/2010','mm/dd/yyyy'),5,2010,7651,10989);
INSERT INTO caln
VALUES (To_Date('02/01/2010','mm/dd/yyyy'),2010,21,To_Date('02/01/2010','mm/dd/yyyy'),5,2010,7652,10990);
INSERT INTO caln
VALUES (To_Date('02/02/2010','mm/dd/yyyy'),2010,22,To_Date('02/02/2010','mm/dd/yyyy'),5,2010,7653,10991);
INSERT INTO caln
VALUES (To_Date('02/03/2010','mm/dd/yyyy'),2010,23,To_Date('02/03/2010','mm/dd/yyyy'),5,2010,7654,10992);
INSERT INTO caln
VALUES (To_Date('02/04/2010','mm/dd/yyyy'),2010,24,To_Date('02/04/2010','mm/dd/yyyy'),5,2010,7655,10993);
INSERT INTO caln
VALUES (To_Date('02/05/2010','mm/dd/yyyy'),2010,25,To_Date('02/05/2010','mm/dd/yyyy'),5,2010,7656,10994);
INSERT INTO caln
VALUES (To_Date('02/06/2010','mm/dd/yyyy'),2010,0,To_Date('02/05/2010','mm/dd/yyyy'),5,2010,7656,10995);
INSERT INTO caln
VALUES (To_Date('02/07/2010','mm/dd/yyyy'),2010,0,To_Date('02/05/2010','mm/dd/yyyy'),6,2010,7656,10996);
INSERT INTO caln
VALUES (To_Date('02/08/2010','mm/dd/yyyy'),2010,26,To_Date('02/08/2010','mm/dd/yyyy'),6,2010,7657,10997);
INSERT INTO caln
VALUES (To_Date('02/09/2010','mm/dd/yyyy'),2010,27,To_Date('02/09/2010','mm/dd/yyyy'),6,2010,7658,10998);
INSERT INTO caln
VALUES (To_Date('02/10/2010','mm/dd/yyyy'),2010,28,To_Date('02/10/2010','mm/dd/yyyy'),6,2010,7659,10999);
INSERT INTO caln
VALUES (To_Date('02/11/2010','mm/dd/yyyy'),2010,29,To_Date('02/11/2010','mm/dd/yyyy'),6,2010,7660,11000);
INSERT INTO caln
VALUES (To_Date('02/12/2010','mm/dd/yyyy'),2010,30,To_Date('02/12/2010','mm/dd/yyyy'),6,2010,7661,11001);
INSERT INTO caln
VALUES (To_Date('02/13/2010','mm/dd/yyyy'),2010,0,To_Date('02/12/2010','mm/dd/yyyy'),6,2010,7661,11002);
INSERT INTO caln
VALUES (To_Date('02/14/2010','mm/dd/yyyy'),2010,0,To_Date('02/12/2010','mm/dd/yyyy'),7,2010,7661,11003);
INSERT INTO caln
VALUES (To_Date('02/15/2010','mm/dd/yyyy'),2010,31,To_Date('02/15/2010','mm/dd/yyyy'),7,2010,7662,11004);
INSERT INTO caln
VALUES (To_Date('02/16/2010','mm/dd/yyyy'),2010,32,To_Date('02/16/2010','mm/dd/yyyy'),7,2010,7663,11005);
INSERT INTO caln
VALUES (To_Date('02/17/2010','mm/dd/yyyy'),2010,33,To_Date('02/17/2010','mm/dd/yyyy'),7,2010,7664,11006);
INSERT INTO caln
VALUES (To_Date('02/18/2010','mm/dd/yyyy'),2010,34,To_Date('02/18/2010','mm/dd/yyyy'),7,2010,7665,11007);
INSERT INTO caln
VALUES (To_Date('02/19/2010','mm/dd/yyyy'),2010,35,To_Date('02/19/2010','mm/dd/yyyy'),7,2010,7666,11008);
INSERT INTO caln
VALUES (To_Date('02/20/2010','mm/dd/yyyy'),2010,0,To_Date('02/19/2010','mm/dd/yyyy'),7,2010,7666,11009);
CREATE TABLE ords
( ord_nbr NUMBER NOT NULL
, sub_nbr NUMBER NOT NULL
, ord_stat VARCHAR2(2)
, ord_qty NUMBER
, part_nbr VARCHAR2(5)
CONSTRAINT ords_pk PRIMARY KEY (ord_nbr, sub_nbr)
INSERT INTO ords
VALUES (1,1,'CL',10,'PART1');
INSERT INTO ords
VALUES (1,2,'CL',5,'PART1');
INSERT INTO ords
VALUES (25,1,'CL',15,'PART2');
INSERT INTO ords
VALUES (14,1,'OP',12,'PART3');
INSERT INTO ords
VALUES (33,1,'CL',25,'PART1');
INSERT INTO ords
VALUES (33,2,'CL',15,'PART1');
INSERT INTO ords
VALUES (33,3,'OP',10,'PART1');
INSERT INTO ords
VALUES (7,1,'PL',18,'PART2');
INSERT INTO ords
VALUES (96,1,'PL',10,'PART3');
INSERT INTO ords
VALUES (31,1,'CL',20,'PART2');
CREATE TABLE oops
( ord_nbr NUMBER NOT NULL
, sub_nbr NUMBER NOT NULL
, op_nbr VARCHAR2(4) NOT NULL
, mach_id VARCHAR2(4)
, oper_stat VARCHAR2(2)
, plan_start_dt DATE
, plsu NUMBER
, plrn NUMBER
CONSTRAINT ords_pk PRIMARY KEY (ord_nbr, sub_nbr, op_nbr)
-- NOTE:
-- for the orders with a status of 'CL' or 'PL' in the 'ords' table, I'm not bothering to put
-- in more than two operations (though in reality more would be there) since they should be
-- ignored in the final result anyway
INSERT INTO oops
VALUES (1,1,'0010','123A','CL',TO_DATE('01/11/2010','mm/dd/yyyy'),2,0.2);
INSERT INTO oops
VALUES (1,1,'0015','259B','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.15);
INSERT INTO oops
VALUES (1,2,'0010','123A','CP',TO_DATE('01/11/2010','mm/dd/yyyy'),2,0.2);
INSERT INTO oops
VALUES (1,2,'0015','259B','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.15);
INSERT INTO oops
VALUES (25,1,'0005','123A','CP',TO_DATE('01/18/2010','mm/dd/yyyy'),2,0.25);
INSERT INTO oops
VALUES (25,1,'0030','110C','CL',TO_DATE('01/19/2010','mm/dd/yyyy'),4,0.1);
INSERT INTO oops
VALUES (14,1,'0010','127A','CP',TO_DATE('01/11/2010','mm/dd/yyyy'),2,0.25);
INSERT INTO oops
VALUES (14,1,'0025','110C','CL',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
INSERT INTO oops
VALUES (14,1,'0040','050C','CP',TO_DATE('01/13/2010','mm/dd/yyyy'),1.3,0.15);
INSERT INTO oops
VALUES (14,1,'0050','220B','WK',TO_DATE('01/14/2010','mm/dd/yyyy'),4,0.25);
INSERT INTO oops
VALUES (14,1,'0065','242B','AV',TO_DATE('01/18/2010','mm/dd/yyyy'),1.5,0.1);
INSERT INTO oops
VALUES (14,1,'0067','150G','NA',TO_DATE('01/19/2010','mm/dd/yyyy'),2,0.1);
INSERT INTO oops
VALUES (14,1,'0100','250G','NA',TO_DATE('01/20/2010','mm/dd/yyyy'),2.1,0.2);
INSERT INTO oops
VALUES (33,1,'0010','123A','CL',TO_DATE('01/11/2010','mm/dd/yyyy'),1.9,0.2);
INSERT INTO oops
VALUES (33,1,'0015','259B','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
INSERT INTO oops
VALUES (33,2,'0010','123A','CL',TO_DATE('01/11/2010','mm/dd/yyyy'),1.9,0.2);
INSERT INTO oops
VALUES (33,2,'0015','259B','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
INSERT INTO oops
VALUES (33,3,'0010','123A','CL',TO_DATE('01/11/2010','mm/dd/yyyy'),1.9,0.2);
INSERT INTO oops
VALUES (33,3,'0015','259B','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
INSERT INTO oops
VALUES (33,3,'0020','220B','NA',TO_DATE('01/12/2010','mm/dd/yyyy'),1.7,0.15);
INSERT INTO oops
VALUES (33,3,'0030','150G','NA',TO_DATE('01/13/2010','mm/dd/yyyy'),1.3,0.05);
INSERT INTO oops
VALUES (33,3,'0055','150G','NA',TO_DATE('01/15/2010','mm/dd/yyyy'),2.1.,0.1);
INSERT INTO oops
VALUES (7,1,'0005','123A','NA',TO_DATE('01/11/2010','mm/dd/yyyy'),2,0.2);
INSERT INTO oops
VALUES (7,1,'0030','110C','NA',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.15);
INSERT INTO oops
VALUES (96,1,'0010','127A','NA',TO_DATE('01/11/2010','mm/dd/yyyy'),2,0.25);
INSERT INTO oops
VALUES (96,1,'0025','110C','NA',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
INSERT INTO oops
VALUES (31,1,'0005','123A','CL',TO_DATE('01/11/2010','mm/dd/yyyy'),1.9,0.2);
INSERT INTO oops
VALUES (31,1,'0030','110C','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
CREATE TABLE mach
( mach_id VARCHAR2(4) NOT NULL
, desc_short VARCHAR2(9)
, group VARCHAR2(7)
CONSTRAINT ords_pk PRIMARY KEY (mach_id)
INSERT INTO mach
VALUES ('123A','desc here','GROUPH1');
INSERT INTO mach
VALUES ('259B','desc here','GROUPH2');
INSERT INTO mach
VALUES ('110C','desc here','GROUPJ1');
INSERT INTO mach
VALUES ('050C','desc here','GROUPK2');
INSERT INTO mach
VALUES ('220B','desc here','GROUPH2');
INSERT INTO mach
VALUES ('242B','desc here','GROUPH2');
INSERT INTO mach
VALUES ('150G','desc here','GROUPL1');
INSERT INTO mach
VALUES ('250G','desc here','GROUPL2');
INSERT INTO mach
VALUES ('242B','desc here','GROUPH2'); -
Help with SQL statements please.... URGENT PLEASE!!!!
I have 2 Tables
TABLE_NAME COLUMN_NAME DATA_TYPE
TASTEWINE TWDATE DATE
TASTEWINE BIN NUMBER
TASTEWINE QUANTITY NUMBER
TASTING TDATE DATE
TASTING PLACE VARCHAR2
a) Table TASTING has 2 columns.... TDATE( date Tasting was Held) and PLACE ( locations at which Tasting was held)
b) Table TASTEWINE has 3 Columns.............. TWDATE( wine tasting date, BIN( ID number for type of wine that was tasted), AND QUANTITY( quantity of win consumed by bottles)
Here is the QUestion.... I am having a hard time figuring out how to connect those two tables based on this information .. What I want to do is this.....select the total number of bottles of wine served at each wine-tasting, but only for the second half of the year 1999, and I want to see not only the date and total bottles served, but also the location where the wine-tasting took place. I also want to display the date, the place, and total quantity.
Can Anyone please Help me??Hi,
Your query works fine - as well as the one mentioned by Alok. I have tired it with some sample values, and both show the same results:-
The two tables :-
CREATE TABLE TASTEWINE
TWDATE DATE,
BIN NUMBER,
QUANTITY NUMBER
CREATE TABLE TASTING
TDATE DATE,
PLACE VARCHAR2(100)
);Rows in the Tables:-
INSERT INTO TASTEWINE VALUES (TO_DATE('01/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('02/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('03/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('04/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('05/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('06/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('07/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('08/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('09/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('10/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('11/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('12/12/1999','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('01/12/2000','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('02/12/2000','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('03/12/2000','MM/DD/YYYY'),1,100);
INSERT INTO TASTEWINE VALUES (TO_DATE('04/12/2000','MM/DD/YYYY'),1,100);
COMMIT;
INSERT INTO TASTING VALUES (TO_DATE('01/12/1999','MM/DD/YYYY'),'SEATTLE');
INSERT INTO TASTING VALUES (TO_DATE('02/12/1999','MM/DD/YYYY'),'SAN FRANSICO');
INSERT INTO TASTING VALUES (TO_DATE('03/12/1999','MM/DD/YYYY'),'DENVER');
INSERT INTO TASTING VALUES (TO_DATE('04/12/1999','MM/DD/YYYY'),'AUSTIN');
INSERT INTO TASTING VALUES (TO_DATE('05/12/1999','MM/DD/YYYY'),'SALT LAKE CITY');
INSERT INTO TASTING VALUES (TO_DATE('06/12/1999','MM/DD/YYYY'),'LOS ANGLES');
INSERT INTO TASTING VALUES (TO_DATE('07/12/1999','MM/DD/YYYY'),'PORTLAND');
INSERT INTO TASTING VALUES (TO_DATE('08/12/1999','MM/DD/YYYY'),'NEW YORK');
INSERT INTO TASTING VALUES (TO_DATE('09/12/1999','MM/DD/YYYY'),'NEWARK');
INSERT INTO TASTING VALUES (TO_DATE('10/12/1999','MM/DD/YYYY'),'EL PASO');
INSERT INTO TASTING VALUES (TO_DATE('11/12/1999','MM/DD/YYYY'),'AUSTIN');
INSERT INTO TASTING VALUES (TO_DATE('12/12/1999','MM/DD/YYYY'),'CHICAGO');
INSERT INTO TASTING VALUES (TO_DATE('01/12/2000','MM/DD/YYYY'),'ATLANTA');
INSERT INTO TASTING VALUES (TO_DATE('02/12/2000','MM/DD/YYYY'),'HOLLYWOOD');
INSERT INTO TASTING VALUES (TO_DATE('03/12/2000','MM/DD/YYYY'),'');
INSERT INTO TASTING VALUES (TO_DATE('04/12/2000','MM/DD/YYYY'),'SEATTLE');
COMMIT;The First Query :-
SELECT
A.TWDATE,
B.PLACE,
SUM(A.QUANTITY)
FROM
TASTEWINE A,
TASTING B
WHERE
A.TWDATE = B.TDATE
AND B.TDATE > TO_DATE('01/07/1999', 'DD/MM/YYYY')
AND B.TDATE < TO_DATE('01/01/2000', 'DD/MM/YYYY')
GROUP BY
A.TWDATE,
B.PLACE;The Second Query :-
SELECT
A.TWDATE,
B.PLACE,
SUM(A.QUANTITY)
FROM
TASTEWINE A,
TASTING B
WHERE
A.TWDATE = B.TDATE
AND B.TDATE
BETWEEN
TO_DATE('01/07/1999', 'DD/MM/YYYY') AND
TO_DATE('01/01/2000', 'DD/MM/YYYY')
GROUP BY
A.TWDATE,
B.PLACE;Regards,
Sandeep
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