How to write in java c:out value="${bindings.First.enabledString}"/ ?

I have the jstl <c:out value="${bindings.First.enabledString}"/>.
I want to translate the regular expression "${bindings.First.enabledString}" in java code.
How can I do it?
I've found the class that implement "bindings":
oracle.jbo.uicli.binding.JUFormBinding bind = (oracle.jbo.uicli.binding.JUFormBinding)request.getAttribute("bindings");
but I don't know how to reference "First.enabledString".

ok, thanks!
Then the second question is:
how can I set the value of the expression with the same method?
To evaluate the expression the code is:
protected Object evalEL(DataActionContext ctx, String expression ) {
Evaluator eval = Evaluator.getEvaluator(ctx);
return eval.getValue(expression);
String customerName = (String)evalEL(ctx,"${bindings.CustName}");
and I've seen that for the object Evaluator there is the method setValue.
I've write the following code:
protected void setEL(DataActionContext ctx, String expression, Object value ) {
Evaluator eval = Evaluator.getEvaluator(ctx);
eval.setValue(expression, value);
but don't run in this case:
setEL(actionContext, "${bindings.First.enabledString}", "disabled");
I've seen that, on the contrary, run for:
setEL(actionContext, "${bindings.OutletView1.labels['Code']}", "SSS");
is correct to work in this way? why don't run in the first case?

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Hi
Can any one proivde the Sudo code for Customer exit at Reports.
I need to write a code for when ever user input Calaender month then querry calucalate the cumulative values also.
How to write a code for cumulative values..
Example:
Customer -Sales.Quantity(CalMonth)--- Sales.quantity(Cumulative Month)
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2200
Regards
mannev.

hi mannev,
to get an idea, search in SDN
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Hi,
I am having requirement that how to write the java program to retrieve the last 7 days dates. Please help me.
Regards,
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It needs any jar file.Of course!
I did using jscape.My program is running fine.But it
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>
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How to set in java the val of the Exp ${bindings.First.enabledString}?

To evaluate the expression the code is:
protected Object evalEL(DataActionContext ctx, String expression ) {
Evaluator eval = Evaluator.getEvaluator(ctx);
return eval.getValue(expression);
String customerName = (String)evalEL(ctx,"${bindings.CustName}");
and I've seen that for the object Evaluator there is the method setValue.
How can I set the value of the expression with the same method?
I've write the following code:
protected void setEL(DataActionContext ctx, String expression, Object value ) {
Evaluator eval = Evaluator.getEvaluator(ctx);
eval.setValue(expression, value);
but don't run in this case:
setEL(actionContext, "${bindings.First.enabledString}", "disabled");
I've seen that, on the contrary, run for:
setEL(actionContext, "${bindings.OutletView1.labels['Code']}", "SSS");
is correct to work in this way? why don't run in the first case?

I'd be quite interested to know if this can be doen as well so I thought I'd post this message to move it to the top of the board.
Thanks.

How to write a JAVA program to execute the SQL queries

I have a database in the Microsoft Access queries and I need to execute the query by some how write the Java program to make it execute the query. because I need to get the different of time so I know how fast each query run.
Thank you

You need jdbc-driver for MSAccess for run this example:
JDBCClient.java
import java.util.Properties;
import java.lang.String;
import java.sql.DriverManager;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.BufferedOutputStream;
import java.lang.System;
import java.lang.Class;
import java.sql.SQLException;
import java.util.Date;
import java.util.Locale;
import java.text.DateFormat;
import java.sql.Time;
public class JDBCClient{
    private String DriverName = new String();
    private String DatabaseURL = new String();
    private String UserName = new String();
    private String Password = new String();
    private String SQLFile = new String();
    private String OutputFile = new String();
    private String Separator = new String();
    private boolean NeedColumnHeaders;
    private String EncodingParamName = new String();
    private String EncodingValue = new String();
    private String OutputEncoding = new String();
    private boolean AfterLastColumnSeparator;
    JDBCClient( String propfilename){
     System.out.println( "Initializing...");
     Properties properties = new Properties();
     try{
         properties.load( new FileInputStream( propfilename));
     catch( Exception e){
             System.out.println( "Error: " + e.toString());
         System.exit( 0);
     DriverName = properties.getProperty( "DriverName");
     DatabaseURL = properties.getProperty( "DatabaseURL");
     UserName = properties.getProperty( "UserName");
     Password = properties.getProperty( "Password");
     SQLFile = properties.getProperty( "SQLFile");
     OutputFile = properties.getProperty( "OutputFile");
     Separator = properties.getProperty( "Separator");
     if( properties.getProperty( "NeedColumnHeaders").compareToIgnoreCase( "yes") == 0 ||
         properties.getProperty( "NeedColumnHeaders").compareToIgnoreCase( "true") == 0)
         NeedColumnHeaders = true;
     else
     if( properties.getProperty( "NeedColumnHeaders").compareToIgnoreCase( "no") == 0 ||
         properties.getProperty( "NeedColumnHeaders").compareToIgnoreCase( "false") == 0)
         NeedColumnHeaders = false;
     else{
             System.out.println( "Invalid value for \"NeedColumnHeaders\" property (logical expected)");
         System.exit( 0);
     EncodingParamName = properties.getProperty( "EncodingParamName");
     EncodingValue = properties.getProperty( "EncodingValue");
     OutputEncoding = properties.getProperty( "OutputEncoding");
     if( properties.getProperty( "AfterLastColumnSeparator").compareToIgnoreCase( "yes") == 0 ||
         properties.getProperty( "AfterLastColumnSeparator").compareToIgnoreCase( "true") == 0)
         AfterLastColumnSeparator = true;
     else
     if( properties.getProperty( "AfterLastColumnSeparator").compareToIgnoreCase( "no") == 0 ||
         properties.getProperty( "AfterLastColumnSeparator").compareToIgnoreCase( "false") == 0)
         AfterLastColumnSeparator = false;
     else{
             System.out.println( "Invalid value for \"AfterLastColumnSeparator\" property (logical expected)");
         System.exit( 0);
     try{
         byte[] EOL = new byte[2];
         EOL[0] = 13;
         EOL[1] = 10;
         Class.forName( DriverName);
         Properties connInfo = new Properties();
         connInfo.put( "user", UserName);
         connInfo.put( "password", Password);
         if( EncodingParamName.length() != 0 && EncodingValue.length() != 0)
          connInfo.put( EncodingParamName, EncodingValue);
             Connection connection = DriverManager.getConnection( DatabaseURL, connInfo);
         FileInputStream in = new FileInputStream( SQLFile);
         byte[] buffer = new byte[in.available()];
         in.read( buffer);
         in.close();
         String SQL = new String( buffer);
             PreparedStatement statement = connection.prepareStatement( SQL);
         Date d1 = new Date();
             System.out.println( "Database connected at " + d1 + " Executing statement...");
            ResultSet resultSet = null;
         if( statement.execute())
          resultSet = statement.getResultSet();
         else{
              System.out.println( "Script updates " + statement.getUpdateCount() + " records.");
          System.exit( 0);
             ResultSetMetaData metaData = resultSet.getMetaData();
             BufferedOutputStream out = new BufferedOutputStream( new FileOutputStream( OutputFile));
         if( NeedColumnHeaders && metaData.getColumnCount() > 0){
          String head = new String();
          for( int i = 1; i < metaData.getColumnCount(); i++)
              head += metaData.getColumnName( i) + Separator;
          head += metaData.getColumnName( metaData.getColumnCount());
          out.write( head.getBytes( OutputEncoding), 0, head.length());
          out.write( EOL, 0, 2);
         String record = new String();
         while( resultSet.next()){
          record = "";
          for( int i = 1; i < metaData.getColumnCount(); i++)
              record += resultSet.getString( i) + Separator;
          record += resultSet.getString( metaData.getColumnCount());
          if( AfterLastColumnSeparator)
              record += Separator;
          out.write( record.getBytes( OutputEncoding), 0, record.length());
          out.write( EOL, 0, 2);
         out.close();
         Date d2 = new Date();
             System.out.println( "Done at " + d2);
             System.out.println( "Executing time " + new Time( d2.getTime() - d1.getTime() - 10800000));
     catch( ClassNotFoundException e){
             System.out.println( e.toString());
     catch( SQLException e){
             System.out.println( e.toString());
     catch( java.io.IOException e){
             System.out.println( e.toString());
     System.exit( 0);
    public static void main( String args[]){
     if( args.length == 1)
         new JDBCClient( args[0]);
     else
         System.out.println( "Usage JDBCClient <properties_file>");
}JDBCClient.properties ( for Oracle database)
DriverName=oracle.jdbc.driver.OracleDriver
DatabaseURL=jdbc:oracle:thin:@192.168.1.1:1521:test
UserName=test
Password=test
SQLFile=test.sql
OutputFile=test.csv
Separator=*
NeedColumnHeaders=yes
EncodingParamName=
EncodingValue=
OutputEncoding=windows-1251
AfterLastColumnSeparator=yestest.sql
select * from users;

How to write this java code in jsp using jstl tags?

Can anybody help me on this?
I dont know how to check the containsKey using jstl tags?
<%
     LinkedHashMap yearMap     =     (LinkedHashMap)request.getAttribute("yearMap");
     TreeSet nocSet               =     (TreeSet)request.getAttribute("nocSet");
     Iterator     yearMapIt     =     yearMap.keySet().iterator();
     while(yearMapIt.hasNext())
          int yearValue               =     (Integer)yearMapIt.next();
%>
<tr>
          <td><%=yearValue%></td>
<%
          LinkedHashMap monthMap     =     (LinkedHashMap)yearMap.get(yearValue);
          Iterator     nocSetIt     =     nocSet.iterator();
          while(nocSetIt.hasNext())
               String nCase=(String)nocSetIt.next();
               if(monthMap.containsKey(nCase))
                    String count     =     (String)monthMap.get(nCase);
%>
                    <td> <%= count %> </td>
<%           }
               else
%>
                    <td> 0 </td>
<%
%>
</tr>
<% } %>Edited by: avn_venki on Feb 18, 2008 11:54 PM

<c:forEach var="yearMap" items="${requestScope.yearMap}">
     <th> <c:out value="${yearMap.key}"/> </th>
<bean:define id="monthMap" value="${yearMap.value}"/>
<c:forEach var="nocSet" items="${nocSet}">
then how to write containsKey using tags??

How Can i get PLSQL Procedure out values in Shell Script?

Hi,
I need to use PLSQL Procedure out values in shell script by using that parameter i need to check and call the other procedure. Please can you guide me how can i?
#!/bin/ksh
# Function to call validation program
SQL_PKG_CALL()
echo "Inside SQL_PKG_CALL for $file"
sqlplus -s /nolog << EOF
     whenever sqlerror exit failure
     connect ${APPS_LOGIN}
     variable exit_value NUMBER
     set serveroutput on size 100000
     DECLARE
          l_errbuf VARCHAR2(10000) := NULL; l_retcode NUMBER := NULL;lv_test VARCHAR2(4000) := NULL;
     BEGIN
          fnd_global.apps_initialize ( USER_ID => ${USER_ID}, RESP_ID => ${RESP_ID}, RESP_APPL_ID => ${RESP_APPL_ID}
                         , SECURITY_GROUP_ID => ${SECURITY_GROUP_ID}
          #Calling PLSQL procedure for create and attache document
          XXAFPEEP_SO_DOC_ATTACH_INT.DOCUMENT_ATTACH (p_errbuf => l_errbuf, p_retcode => :RETMSG, p_fileName => $file
                                   , p_debug => 'Y', p_rettest => lv_test);
          # to print the procedure return values
          DBMS_OUT.PUT_LINE('Return Message: '|| lv_test);
          #${RETCODE}=l_retcode;
          print :RETMSG;
     END;
EXIT 0
EOF
# Program starts here
echo "+---------------------------------------------------------------------------+"
echo "Program Start"
APPS_LOGIN=${1} # Apps Login
USER_ID=${2} # User ID
RESP_ID=${5} # Responsiblity ID
RESP_APPL_ID=${6} # Responsiblity Application ID
SECURITY_GROUP_ID=${7} # Security Group ID
DIRECTORY_PATH=${8} # Directory --Attached file locations
DIRECTORY_NAME=${9} # Directory Name for plsql
echo "User ID : $USER_ID"
echo "Responsibility ID : $RESP_ID"
echo "Responsibilith Application ID : $RESP_APPL_ID"
echo "Security Goup ID : $SECURITY_GROUP_ID"
echo "Directory Path : $DIRECTORY_PATH"
echo "Direcotry Name : $DIRECTORY_NAME"
echo
#files direcotry
cd $DIRECTORY_PATH
echo Present Working Directory: `pwd`
echo
#for all file names
ALL_FILES=`ls *.pdf`
for file in $ALL_FILES
do
     if [ -f $file ]
     then
          #log "Processing $file" # future
          echo Processing: $file
          # Calling the PL/SQL Program
          SQL_PKG_CALL;
          #echo "Retcode : $RETCODE"
          echo "RetMessage : $RETMSG"
     else
          log "Skipped $file: invalid file"
          echo "Skipping current file $file: not a valid file."
     fi
done
Thanks
Sudheer

Saubhik's provided the solution, but just for fun:
Test procedure:
create or replace procedure get_ename
   ( p_empno in emp.empno%type
   , p_ename_out out emp.ename%type )
is
begin
   select ename into p_ename_out
   from   emp
   where empno = p_empno;
end get_ename;Test data:
SQL> select empno, ename from emp order by 1;
EMPNO ENAME
7369 SMITH
7499 ALLEN
7521 WARD
7566 JONES
7654 MARTIN
7698 BLAKE
7782 CLARK
7788 SCOTT
7839 KING
7844 TURNER
7876 ADAMS
7900 JAMES
7902 FORD
7934 MILLER
14 rows selectedTest call from SQL*Plus to show it working:
SQL> declare
2     v_ename emp.ename%type;
3 begin
4     get_ename(7844,v_ename);
5     dbms_output.put_line(v_ename);
6 end;
7 /
TURNER
PL/SQL procedure successfully completed.Demo shellscript (borrowing the function idea from Saubhik):
#!/bin/ksh
empno=${1:-NULL}
exec_sql() {
    sqlplus -s william/w@//vm.starbase.local:1521/eleven <<END_SQL
    spool get_out_value.sh.log
    set serverout on size 2000 feedback off
    declare
       v_name emp.ename%type;
    begin
       get_ename(${empno},v_name);
       dbms_output.put_line('# ' || v_name);
    end;
    spool off
    exit
END_SQL
ename=$(exec_sql ${empno} | awk '/^# / {print $2}')
print Employee ${empno} = ${ename}Demo:
/Users/williamr: get_out_value.sh 7844
Employee 7844 = TURNER
/Users/williamr: get_out_value.sh
Employee NULL =Note this substitutes the word NULL if no empno is passed, and it ignores error output or anything else by only looking for lines beginning '# ' and then taking the following word. Error messages will appear in the logfile. (In this example it probably doesn't need the NULL substitution because a missing parameter would cause a syntax error which the script will handle anyway, but it could be useful in more complex examples.)
For a production script you should probably use an OS authenticated account so you don't have to deal with password strings.

How to write a java function for use in where clause in SQL statement

Hi,
Does anyone know a good tutorial on how to write and include a Java class/function into Oracle.
I'd like to write mathematical function to use in my queries, but the resources available in PL/SQL are very limited.
Many thanx

Pim,
I see you got an answer in the PL/SQL forum.
But in case you haven't seen it, perhaps this Web page will help:
http://www.oracle.com/technology/tech/java/jsp/index.html
Good Luck,
Avi.

Tips on how to write efficient java code for java mapping

hi
I do not have much knowledge in Java
Can anybody tell me some tips on how to write efficient and optimised java code to be used in java mapping
Thanks,
Loveena

hi D'za,
JAVA in xi
A very important place where you will use JAVA in XI is while doing your Mapping. There will be cases when JAVA MAPPING is the best solution to go for. There are 2 types of Parsers available for JAVA Mapping. DOM Parser and SAX parser. Just got through the following links to understand more on Java Mapping and the APIs available.http://java.sun.com/j2se/1.4.2/docs/api/javax/xml/parsers/package-summary.html http://java.sun.com/j2se/1.4.2/docs/api/org/w3c/dom/Document.html http://java.sun.com/j2se/1.4.2/docs/api/org/w3c/dom/package-frame.html /people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-i
/people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-ii /people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-iii
JAVA mapping -
/people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-i /people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-ii /people/prasad.ulagappan2/blog/2005/06/29/java-mapping-part-iii /people/ravikumar.allampallam/blog/2005/06/24/convert-any-flat-file-to-any-idoc-java-mapping /people/amol.joshi2/blog/2006/03/10/think-objects-when-creating-java-mappings /people/sameer.shadab/blog/2005/09/29/testing-abap-mapping
sample code for java mapping
Re: Example code DOM PARSER API -
http://java.sun.com/j2se/1.4.2/docs/api/org/w3c/dom/package-frame.html DOM --- /people/thorsten.nordholmsbirk/blog/2006/08/10/using-jaxp-to-both-parse-and-emit-xml-in-xi-java-mapping-programs tutorial sax and dom
For a tutorial on the methods of SAX and DOM http://java.sun.com/webservices/docs/1.1/tutorial/doc/
SAX AND dom PARSER ( BY thorsten) -
example /people/thorsten.nordholmsbirk/blog/2006/08/10/using-jaxp-to-both-parse-and-emit-xml-in-xi-java-mapping-programs java mapping example ( testing and debugging) /people/stefan.grube/blog/2006/10/23/testing-and-debugging-java-mapping-in-developer-studio
regards
biplab
Use a Good Subject Line, One Question Per Posting - Award Points

How to get Portal Session Time out values of CRM system

Hi,
I had a requirements to pass the Portal session Time out value to the External Configurator. How can I get that value. Is there any Function Module to get this value.
If you go to SMICM and select services, we see HTTP details. I need to get the Time out value what its showing there. How can I get that value. Is there any FM to get that value or Is there any existing code.
Please let me know if you need any further information.
Thanks.

Hi
The session time out value for CRM WEBUI is controled by parameter RDISP/PLUGIN_AUTO_LOGOUT.
Its value is got by BSP.
Please check in SE80 BSP application CRMCMP_IC_FRAME view hideenview.htm.
If you want to know the session time out value for portal, I am afraid that you need to raise questions in EP's forum.
Best regards,
Maggie

How to get Portal Session Time out values.

Hi,
I had a requirements to pass the Portal session Time out value to the External Configurator. How can I get that value. Is there any Function Module to get this value.

Hi
The session time out value for CRM WEBUI is controled by parameter RDISP/PLUGIN_AUTO_LOGOUT.
Its value is got by BSP.
Please check in SE80 BSP application CRMCMP_IC_FRAME view hideenview.htm.
If you want to know the session time out value for portal, I am afraid that you need to raise questions in EP's forum.
Best regards,
Maggie

How to write the java file and number line where execution point is?

I'd like to log errors encountered by a home made java server to a file.
To be effective, here is how I'd like to build the string to log, roughly :
String locError = "ERROR: in "+ filename +" => "+ methodname +", line "+ linenumber +"\n"; Is there a way in java to get such informations? Via reflection?
I doubt so but I'd like to make sure.
Thanks

bestam wrote:
I'd like to log errors encountered by a home made java server to a file.
To be effective, here is how I'd like to build the string to log, roughly :
String locError = "ERROR: in "+ filename +" => "+ methodname +", line "+ linenumber +"\n"; Is there a way in java to get such informations? Via reflection?
I doubt so but I'd like to make sure.
ThanksNot quite sure what you mean here. Are you trying to print out the contents of an actual Java error? If so, Throwable.getStackTrace() or Throwable.printStackTrace() are probably what you want.
Winston

How to write select query for this

Hi,
I had a html form and in the for i had drop down box and it needs to select multiple values from the drop down box. When i select multiple values then i have to write the SQL select statement query .
When i try to write the select statement and trying to run i am getting error.
select * from Table
where emo_no = '1,2,3'
this is how i write query please suggest me how to write query for selecting multiple values from the drop down box.
Thanks

select * from Table
where emo_no in ( 1,2,3)
for integer values
select * from Table
where emo_no in ('1','2','3')
for characters
If we talk about large scale applications that may have millions of records, I would suggest this.
declare @t table (v int)
insert into t (v) values (1)
insert into t (v) valves (2)
insert into t (v) values (3)
select *
from table
inner join @t t on table.emo_no = t.v
Using "in" for a where clause is not so bad for filtering on a few values, but if you are filtering a lot of rows and a lot of values (emo_no) the performance degrades quickly for some reasons beyond the scope of this.
This is just one solution, I'll through this out as well, instead of an in memory (@t) table, doing a disk based temp table (#t) and creating an index on the column "v".
create table #t (v int)
insert into #t (v) values (1)
insert into #t (v) valves (2)
insert into #t (v) values (3)
create index ix_t on #t (v)
select *
from table
inner join #t t on table.emo_no = t.v
drop table #t
Pardon any syntax errors and careful using a drop statement.
Sometimes in memory tables work better than disk temp tables, it takes some testing and trial and error depending on your datasets to determine the best solution.
Probably too much info ;-)
Byron Mann
[email protected]
[email protected]
Software Architect
hosting.com | hostmysite.com
http://www.hostmysite.com/?utm_source=bb

How to decomplie a java class file when java application is running/launch?

I have a simple java application with some components being displayed, now i need to get the components instance names that are been created in that java application. How do i do that?
Eg: Button b1 = new button();
now how to write a java application to decompile this class file & return me the button instance ie "b1".

I think you wanna do two different things:
1. find out which objects were created at runtime.
2. decompile class file.
I'm no so sure why.
have you tried insrospecting the class using reflection ?
Here is a code snippet that prints class field names.
try{
Class c = Class.forName("MyClass");
java.lang.reflect.Field[] f= c.getFields();
for (int i = 0;i<f.length; i++)
System.out.println(f.getName());
catch(Exception e){ }
Regards
Joseph.

Really need help on how to write this program some 1 plz help me out here.

i am new to java and i confused on how to be writing this program.
i have completed the Part 1 but i am stuck on Part 2 & 3 so it would would be really great if any 1 could help me out on how to write the program.
Part I
An algorithm describes how a problem is solved in terms of the actions to be executed, and it specifies the order in which the actions should be executed. An algorithm must be detailed enough so that you can "walk" through the algorithm with test data. This means the algorithm must include all the necessary calculations.
Here is an algorithm that calculates the cost of a rectangular window. The
total cost of a window is based on two prices; the cost of the glass plus the cost of the metal frame around the glass. The glass is 50 cents per
square inch (area) and the metal frame is 75 cents per inch (perimeter).
The length and width of the window will be entered by the user. The
output of the program should be the length and width (entered by the user)
and the total cost of the window.
FORMULAS:
area = length times width perimeter = 2 times (length plus width)
Here is the corresponding algorithm:
read in the length of the window in inches
read in the width of the window in inches
compute the area
compute the cost of the glass (area times 50 cents)
compute the perimeter
compute the cost of the frame (perimeter times 75 cents)
compute the total cost of the window (cost of glass plus cost of frame)
display the length, width and total cost
The next step would be to "desk check" the algorithm. First you would need to make up the "test data". For this algorithm, the test data would involve making up a length and a width, and then calculating the cost of the window based on those values. The results are computing by hand or using a calculator. The results of your test data are always calculated before translating your algorithm into a programming language. Here is an example of the test data for the problem given:
length = 10
width = 20
area = 200, glass cost= 100.00 (area times 50 cents)
perimeter = 60, frame cost = 45.00 (perimeter times 75 cents)
total cost =145.00
Once the test data is chosen, you should "walk" through the algorithm using the test data to see if the algorithm produces the same answers that you obtained from your calculations.
If the results are the same, then you would begin translating your algorithm into a programming language. If the results are not the same, then you would attempt to find out what part of the algorithm is incorrect and correct it. It is also
necessary to re-check your hand calculations.
Each time you revise your algorithm, you should walk through it with your test data again. You keep revising your algorithm until it produces the same answers as your test data.
?Now write and submit a Java program that will calculate the cost of a rectangular window according to the algorithm explained. Be sure to prompt for input and label your output.?
Part II
Write, compile and execute a Java program that displays the following prompts:
Enter an integer.
Enter a second integer
Enter a third integer.
Enter a fourth integer.
After each prompt is displayed, your program should use the nextint method of the Scanner class to accept a number from the keyboard for the displayed
prompt. After the fourth integer has been entered, your program should calculate and display the average of the four integers and the value of the first integer entered raised to the power of the second integer entered. The average and result of raising to a power should be included in an appropriate messages
(labels).
Sample Test Data:
Set 1: 100 100 100 100
Set 2: 100 0 100 0
Be sure to write an algorithm first before attempting to write the Java code. Walk through your algorithm with test data to be sure it works as anticipated.
Part III
Repeat Part lI but only calculate the average, not the power. This time, make sure to use the same variable name, number, for each of the four numbers input. Also use the variable sum for the sum of the numbers. (Hint: To do this, you may use the statement sum = sum + number after each number is read.)
For Part 1 this is what i got
import java.util.Scanner;
public class Window
     public static void main(String[] args)
          double length, width, glass_cost, perimeter, frame_cost, area, total;
          Scanner keyboard = new Scanner (System.in);
          System.out.println("Enter the length of the window in inches");
          length = keyboard.nextInt();
          System.out.println("Enter the width of the window in inches");
          width = keyboard.nextInt();
          area = length * width;
          glass_cost = area * .5;
          perimeter = 2 * (length + width);
          frame_cost = perimeter * .75;
          total = glass_cost + frame_cost;
               System.out.println("The Length of the window is " + length + "inches");
               System.out.println("The Width of the window is " + length + "inches");
               System.out.println("The total cost of the window is $ " + total);
     Enter the length of the window in inches
     5
     Enter the width of the window in inches
     8
     The Length of the window is 5.0inches
     The Width of the window is 5.0inches
     The total cost of the window is $ 39.5
Press any key to continue . . .
Edited by: Adhi on Feb 24, 2008 10:33 AM

Adhi wrote:
i am new to java and i confused on how to be writing this program.
i have completed the Part 1 but i am stuck on Part 2 & 3 so it would would be really great if any 1 could help me out on how to write the program.Looks like homework to me.
What have you written so far? Post it.
Part I
An algorithm describes how a problem is solved in terms of the actions to be executed, and it specifies the order in which the actions should be executed. An algorithm must be detailed enough so that you can "walk" through the algorithm with test data. This means the algorithm must include all the necessary calculations.
Here is an algorithm that calculates the cost of a rectangular window. The
total cost of a window is based on two prices; the cost of the glass plus the cost of the metal frame around the glass. The glass is 50 cents per
square inch (area) and the metal frame is 75 cents per inch (perimeter).
The length and width of the window will be entered by the user. The
output of the program should be the length and width (entered by the user)
and the total cost of the window.
FORMULAS:
area = length times width perimeter = 2 times (length plus width)
Here is the corresponding algorithm:
read in the length of the window in inches
read in the width of the window in inches
compute the area
compute the cost of the glass (area times 50 cents)
compute the perimeter
compute the cost of the frame (perimeter times 75 cents)
compute the total cost of the window (cost of glass plus cost of frame)
display the length, width and total cost
The next step would be to "desk check" the algorithm. First you would need to make up the "test data". For this algorithm, the test data would involve making up a length and a width, and then calculating the cost of the window based on those values. The results are computing by hand or using a calculator. The results of your test data are always calculated before translating your algorithm into a programming language. Here is an example of the test data for the problem given:
length = 10
width = 20
area = 200, glass cost= 100.00 (area times 50 cents)
perimeter = 60, frame cost = 45.00 (perimeter times 75 cents)
total cost =145.00
Once the test data is chosen, you should "walk" through the algorithm using the test data to see if the algorithm produces the same answers that you obtained from your calculations.
If the results are the same, then you would begin translating your algorithm into a programming language. If the results are not the same, then you would attempt to find out what part of the algorithm is incorrect and correct it. It is also
necessary to re-check your hand calculations.
Each time you revise your algorithm, you should walk through it with your test data again. You keep revising your algorithm until it produces the same answers as your test data.
Now write and submit a Java program that will calculate the cost of a rectangular window according to the algorithm explained. Be sure to prompt for input and label your output.
Part II
Write, compile and execute a Java program that displays the following prompts:
Enter an integer.
Enter a second integer
Enter a third integer.
Enter a fourth integer.
After each prompt is displayed, your program should use the nextint method of the Scanner class to accept a number from the keyboard for the displayed
prompt. After the fourth integer has been entered, your program should calculate and display the average of the four integers and the value of the first integer entered raised to the power of the second integer entered. The average and result of raising to a power should be included in an appropriate messages
(labels).
Sample Test Data:
Set 1: 100 100 100 100
Set 2: 100 0 100 0
Be sure to write an algorithm first before attempting to write the Java code. Walk through your algorithm with test data to be sure it works as anticipated.So this is where you actually have to do something. My guess is that you've done nothing so far.
Part III
Repeat Part lI but only calculate the average, not the power. This time, make sure to use the same variable name, number, for each of the four numbers input. Also use the variable sum for the sum of the numbers. (Hint: To do this, you may use the statement sum = sum + number after each number is read.)Man, this specification writes itself. Sit down and start coding.
One bit of advice: Nobody here takes kindly to lazy, stupid students who are just trying to con somebody into doing their homework for them. If that's you, better have your asbestos underpants on.
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