Using a variable to select array value

Hey,
Im fairly new to Java, and im doing a course in it at the moment. I have been set some homework to do, but ive got a little stuck ...what i have to do is create a program that randomly generates numbers between 1 and 10, and then i have made an array which has 10 values, and say number 1 comes up in the random number generation, i want array [1] to have the number of times 1 appears in it. Ive came up with the following, but i keep getting errors ...i think there is a problem with defineing the variable i as a long, then the array as an integer...
int[] ar = {0,0,0,0,0,0,0,0,0,0};
int a = 0;
while (a<10)
a++;
long i = Math.round(Math.random()*10);
ar[i] = i;
System.out.println(ar);
with that code i get these errors:
found : long
required: int
ar[i] = i;
^
C:\Website Projects\Java Work\test 1\Document.java:14: possible loss of precision
found : long
required: int
ar[i] = i;
if anyone could help me get this working i would be most greatful
Thanks for your time,
-Ross

ah k thanks for the response :) ...ive managed to narrow it down to one error:
public class random {
public static void main(String[] args){
int[] ar = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
int i = 0;
while (i < 10){
int t = Math.round(Math.random()*10);
     int ar[t]++;}
     i++;
System.out.println(ar);
gives the error:
C:\Website Projects\Java Work\test 1\random.java:8: ']' expected
     int ar[t]++;}
^
1 error
Tool completed with exit code 1
Im pretty sure it just doesnt like the value of the Math.xxxx being int, i was told it requires long/double...i need to convert it somehow after its done the calculation, i think :-S
Thanks,
Ross

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Hi Mayank,
Thanks for your response, but I don't think it corresponds to my problem.
I my case, I use a user exit variable to filter some data. It seems BPS offers the possibility to the user to select several values amongts the pre-selected values presented by the user exit variable, but it doesn't work. We can use a popup in which we enters the required values, but in final, only the first value is taken into account.
I don't know if it is due to a BPS bug or if it is not a good solution in regard to BPS philosophy. In this case, the concerned caracteristic isn't in the header but in lead columns.
I must present a solution to my client next monday, so I have not enough time to open an OSS message.
An alternate solution should be interesting too.
My need is to present to a user a selection of values amongst all values from an infoobject (the user exit variable seemed to be a good solution) and the user must have the possibility to select some values amongst these as filter.
Regards

Bind Variable in SELECT statement and get the value in PL/SQL block

Hi All,
I would like pass bind variable in SELECT statement and get the value of the column in Dynamic SQL
Please seee below
I want to get the below value
Expected result:
select distinct empno ,pr.dept   from emp pr, dept ps where   ps.dept like '%IT' and pr.empno =100
100, HR
select distinct ename ,pr.dept   from emp pr, dept ps where   ps.dept like '%IT' and pr.empno =100
TEST, HR
select distinct loc ,pr.dept   from emp pr, dept ps where   ps.dept like '%IT' and pr.empno =100
NYC, HR
Using the below block I am getting column names only not the value of the column. I need to pass that value(TEST,NYC..) into l_col_val variable
Please suggest
----- TABLE LIST
CREATE TABLE EMP(
EMPNO NUMBER,
ENAME VARCHAR2(255),
DEPT VARCHAR2(255),
LOC    VARCHAR2(255)
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (100,'TEST','HR','NYC');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (200,'TEST1','IT','NYC');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (300,'TEST2','MR','NYC');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (400,'TEST3','HR','DTR');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (500,'TEST4','HR','DAL');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (600,'TEST5','IT','ATL');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (700,'TEST6','IT','BOS');
INSERT INTO EMP (EMPNO,ENAME,DEPT,LOC) VALUES (800,'TEST7','HR','NYC');
COMMIT;
CREATE TABLE COLUMNAMES(
COLUMNAME VARCHAR2(255)
INSERT INTO COLUMNAMES(COLUMNAME) VALUES ('EMPNO');
INSERT INTO COLUMNAMES(COLUMNAME) VALUES ('ENAME');
INSERT INTO COLUMNAMES(COLUMNAME) VALUES ('DEPT');
INSERT INTO COLUMNAMES(COLUMNAME) VALUES ('LOC');
COMMIT;
CREATE TABLE DEPT(
DEPT VARCHAR2(255),
DNAME VARCHAR2(255)
INSERT INTO DEPT(DEPT,DNAME) VALUES ('IT','INFORMATION TECH');
INSERT INTO DEPT(DEPT,DNAME) VALUES ('HR','HUMAN RESOURCE');
INSERT INTO DEPT(DEPT,DNAME) VALUES ('MR','MARKETING');
INSERT INTO DEPT(DEPT,DNAME) VALUES ('IT','INFORMATION TECH');
COMMIT;
PL/SQL BLOCK
DECLARE
TYPE EMPCurTyp IS REF CURSOR;
v_EMP_cursor    EMPCurTyp;
l_col_val           EMP.ENAME%type;
l_ENAME_val       EMP.ENAME%type;
l_col_ddl varchar2(4000);
l_col_name varchar2(60);
l_tab_name varchar2(60);
l_empno number ;
b_l_col_name VARCHAR2(255);
b_l_empno NUMBER;
begin
for rec00 in (
select EMPNO aa from EMP
loop
l_empno := rec00.aa;
for rec in (select COLUMNAME as column_name from columnames
loop
l_col_name := rec.column_name;
begin
l_col_val :=null;
   l_col_ddl := 'select distinct :b_l_col_name ,pr.dept ' ||' from emp pr, dept ps where   ps.dept like ''%IT'' '||' and pr.empno =:b_l_empno';
   dbms_output.put_line('DDL ...'||l_col_ddl);
   OPEN v_EMP_cursor FOR l_col_ddl USING l_col_name, l_empno;
LOOP
    l_col_val :=null;
    FETCH v_EMP_cursor INTO l_col_val,l_ename_val;
    EXIT WHEN v_EMP_cursor%NOTFOUND;
      dbms_output.put_line('l_col_name='||l_col_name ||' empno ='||l_empno);
   END LOOP;
CLOSE v_EMP_cursor;
END;
END LOOP;
END LOOP;
END;

user1758353 wrote:
Thanks Billy, Would you be able to suggest any other faster method to load the data into table. Thanks,
As Mark responded - it all depends on the actual data to load, structure and source/origin. On my busiest database, I am loading on average 30,000 rows every second from data in external files.
However, the data structures are just that - structured. Logical.
Having a data structure with 100's of fields (columns in a SQL table), raise all kinds of questions about how sane that structure is, and what impact it will have on a physical data model implementation.
There is a gross misunderstanding by many when it comes to performance and scalability. The prime factor that determines performance is not how well you code, what tools/language you use, the h/w your c ode runs on, or anything like that. The prime factor that determines perform is the design of the data model - as it determines the complexity/ease to use the data model, and the amount of I/O (the slowest of all db operations) needed to effectively use the data model.

Using a variable to select array value

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