Unable to map nested java classes and objects in actionscript using flex

Hi All..,
Im a newbie in flex and actionscripting...,I however have a task assigned in this domain and goin insane since a week now with this problem...
Problem explained:
I have a class called Unit that inturn have many other classes like for example unit has an engineer class,,,Im not able to access the attributes of engineer using the unit class...that is unit.engineer,engineerid is giving me a null...however attributes unique to unit are accessible...
Please help me out with this...,this problem has already eaten up my deadlines...
Any help would be appreciated and thankz in advance..

Thank you for the swift reply...,
I actually have three java classes Unit , Engineer and UnitretrievalRemote....
Unit contains engineer and also UnitRetrievalRemote has methods to retrieve unit which inturn should return engineer...,However i hav actionscript classes for both engineer and unit and mapped it apporopriately using the remotetag...and also my remote object is defined with a destination...
The below code is my Actionscripting code included in mxml:
import UnitScript.Engineer;//These are my Action Scripting Classes
import UnitScript.Unit;
import mx.collections.ArrayCollection;
import mx.collections.ArrayList;
import mx.controls.Alert;
import mx.events.FlexEvent;
import mx.rpc.events.ResultEvent;
public var unitIds:ArrayCollection;//I'm passing an array from java end
that retrieves the unitId's from the db using hibernate...
public var index:int;
public var unit:Unit;
protected function initData():void
ApplicationService.getUnitIds();
//This is the remoteobject call using blazeds to load the method during application start from java..
private function setUnitIds(event:ResultEvent):void
unitIds = ArrayCollection(event.result);
private function setUnit(event:ResultEvent):void
unit = Unit(event.result);
//mx.controls.Alert.show( "Compling" );
//mx.controls.Alert.show( "Engineer Method" +unit.engineerId);
//mx.controls.Alert.show( " Engineer=="+unit.engineer) ;
unitIDText.text = String( unit.unitId );
customerName.text = unit.name;//displaying the contents fetched from the backend in the panel...
setEngineer(event);
private function setEngineer(event:ResultEvent):void
unit.engineer = Engineer(event.result);
unit = Unit(event.result);
eng_id.text = String(unit.engineer.engineerId);
mx.controls.Alert.show( "Engineer ID Please Show"+unit.engineer);
//This prints a null.
mx.controls.Alert.show( "Direct Engineer Id" +unit.engineer.category);
// This prints a null.
Remote object mapping is as below:
<mx:RemoteObject
    id="ApplicationService"
    destination="Destination1" >
    <mx:method name="getUnitIds" result="setUnitIds(event)"
    fault="mx.controls.Alert.show(event.fault.faultString)"/>
    <mx:method name="getUnit" result="setUnit(event)"
    fault="mx.controls.Alert.show(event.fault.faultString)"/>
</RemoteObject>

Similar Messages

Java Mapping Error - Unable to instantiate the Java class

Hi,
I am trying out a Java Mapping scenario.
The code worked fine in eclipse.i could get the desired output.
but when i tried it out in XI ....i got the following error in moni:
*Unable to instantiate the Java class*
<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
- 
- <SAP:Error xmlns:SAP="http://sap.com/xi/XI/Message/30" xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/" SOAP:mustUnderstand="">
<SAP:Category>Application</SAP:Category>
<SAP:Code area="MAPPING">CANNOT_INSTANCIATE_CLASS</SAP:Code>
<SAP:P1>JavaMapping</SAP:P1>
<SAP:P2>http://www.sdsdsd.com/XI/Sales/T~</SAP:P2>
<SAP:P3>3bd13b30-6300-11dc-b9f1-f0050aa5c91a</SAP:P3>
<SAP:P4>-1</SAP:P4>
<SAP:AdditionalText />
<SAP:ApplicationFaultMessage namespace="" />
<SAP:Stack>Unable to instantiate the Java class JavaMapping (http://www.sdsdsd.com/XI/Sales/T~, 3bd13b30-6300-11dc-b9f1-f0050aa5c91a, -1)</SAP:Stack>
<SAP:Retry>M</SAP:Retry>
</SAP:Error>
Please help me out with this error.

Hi Anu,
Currently I am also facing the same Unable to instantiate the Java class same java class is working fine in eclipse .
Could you please confirm Is this because of version mismatch that in Eclipse JAVA and SAP JAVA ?
Thanks in Advance.
Best,
Srinivas

XSLT Mapping with Java class not working in Integration Repository

Hi,
I have an XSLT mapping program with Java enhancement and I was able to successfully tested it in Stylus Studio. However, when I imported the Java class and the xslt program in Enterprise Service Builder and tested it, my program does not compile.
Here is the error message: "Transformer Configuration Exception occurred when loading XSLT mapping_temp.xsl; details: Could not compile stylesheet".
My java program is in a zip file containing SOAPHeaderHandler.java and SOAPHeaderhandler.class. My Java has a package com.nga.xslt.
Here is the declaration of my Java class in the XSLT: xmlns:javamap="java:com.nga.xslt.SOAPHeaderHandler"
It seems that it could not read the java class. Can you please advice what is wrong?

Hi ,
select XMLTOOLKIT option in Operation mapping and execute it.
I am not sure we can call java program in XSLT Program,but alternative is copy the code and use it in XSLT mapping it self,that means your XSLT program will become with JAVA extensions.
then in Operation mapping level select SAPXMLTOOL kit option and execute it. i hope it will work. if it is not working then you have deploy some JAXP files on server,because the way execution of XSLT Mpaping program got changed,like when eve you executing XSLT with extnasions( if you are not using XMLTOOL kit option) then you have to use latest version of JAXP.JDK files.
Regards,
Raj

Using java class and variables declared in java file in jsp

hi everyone
i m trying to seperate business logic form web layer. i don't know i am doing in a right way or not.
i wanted to access my own java class and its variables in jsp.
for this i created java file like this
package ris;
import java.sql.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class NewClass{
    public static void main(String args[]){
        Connection con = null;
        ResultSet rs=null;
        Statement smt=null;
        try{
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            con=DriverManager.getConnection("jdbc:mysql:///net","root", "anthony111");
            smt=con.createStatement();
           rs= smt.executeQuery("SELECT * FROM emp");
           while(rs.next()){
            String str = rs.getString("Name");
            }catch( Exception e){
                String msg="Exception:"+e.getMessage();
            }finally {
      try {
        if(con != null)
          con.close();
      } catch(SQLException e) {}
}next i created a jsp where i want to access String str defined in java class above.
<%--
    Document   : fisrt
    Created on : Jul 25, 2009, 3:00:38 PM
    Author     : REiSHI
--%>
<%@page import="ris.NewClass"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <h1><%=str%></h1>
    </body>
</html>I wanted to print the name field extracted from database by ResultSet.
but it gives error cannot find symbol str.
please help me to find right way to do this.
i am using netbeans ide.

Very bad approach
1) Think if your table contains more than one NAMEs then you will get only the last one with your code.
2) Your String is declared as local variable in the method.
3) You have not created any object of NewClass nor called the method in JSP page. Then who will call the method to run sql?
4) Your NewClass contains main method which will not work in web application, it's not standalone desktop application so remove main.
Better create an ArrayList and then call the method of NewClass and then store the data into ArrayList and return the ArrayList.
It should look like
{code:java}
package ris;
import java.sql.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class NewClass{
    public static ArrayList getNames(){
        Connection con = null;
        ResultSet rs=null;
        Statement smt=null;
        ArrayList nameList = new ArrayList();
        try{
            Class.forName("com.mysql.jdbc.Driver").newInstance();
            con=DriverManager.getConnection("jdbc:mysql:///net","root", "anthony111");
            smt=con.createStatement();
           rs= smt.executeQuery("SELECT * FROM emp");
           while(rs.next()){
            nameList.add(rs.getString("Name"));
           return nameList;
            }catch( Exception e){
                String msg="Exception:"+e.getMessage();
               </code><code class="jive-code jive-java"><font>return nameList;</code><code class="jive-code jive-java">
            }finally {
      try {
        if(con != null)
          con.close();
      } catch(SQLException e) {}
      </code><code>return nameList;</code>
<code class="jive-code jive-java">    }

Unable to compile the java class in the SQL PLUS

Hi Team,
I am unable to compile the java class in the SQL PLUS in dev1 and dev2. It is giving the following error.
But the same class get Compiled in the Toad(Tool) without any error and working fine. Could someone help me
What to do for this for your reference ,Attaching the java class file.
“ORA-29536: badly formed source: Encountered "<EOF>" at line 1, column 28.
Was expecting one of:
----------------------Here is the Java class Code.....................
create or replace and compile java source named "XXVM_ZipFileUtil_Ela"
as
import java.math.BigDecimal;
import java.util.zip.Deflater;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import oracle.sql.*;
import oracle.jdbc.*;
import java.sql.*;
import java.io.*;
public class XXVM_ZipFileUtil_Ela
public static oracle.sql.BLOB getZipFile(
oracle.sql.CHAR zipFilePathCHAR, oracle.sql.CHAR zipFileNameCHAR,
int fileBufferSize, int zipFileBufferSize,
boolean deleteZipFile, java.sql.Array fileNames, java.sql.Array fileContents, java.sql.Array fileContentsLength)
throws IllegalArgumentException, FileNotFoundException, IOException, java.sql.SQLException
String zipFilePath = (zipFilePathCHAR == null) ? null : zipFilePathCHAR.stringValue();
String zipFileName = (zipFileNameCHAR == null) ? null : zipFileNameCHAR.stringValue();
String zipPathAndFileName = new String(
new String(zipFilePath == null || zipFilePath == "" ? "/tmp/" : zipFilePath) +
new String(zipFileName == null || zipFileName == "" ? System.currentTimeMillis() + ".zip" : zipFileName));
byte[] buffer = new byte[fileBufferSize == 0 ? 100000000 : fileBufferSize];
try
Connection conn = DriverManager.getConnection("jdbc:default:connection:");
oracle.sql.CLOB[] fileContentsCLOB = (oracle.sql.CLOB[])fileContents.getArray();
String[] fileNamesString = (String[])fileNames.getArray();
BigDecimal[] fileContentsLengthNumber = (BigDecimal[])fileContentsLength.getArray();
ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipPathAndFileName));
zipOut.setLevel(Deflater.DEFAULT_COMPRESSION);
for (int i = 0; i < fileNamesString.length; i++) {
System.out.println(i);
zipOut.putNextEntry(new ZipEntry(fileNamesString));
InputStream asciiStream = fileContentsCLOB[i].getAsciiStream(1L);
int asciiReadCount = asciiStream.read(buffer,0,fileContentsLengthNumber[i].intValue());
zipOut.write(buffer, 0, fileContentsLengthNumber[i].intValue());
zipOut.closeEntry();
zipOut.close();
byte zipFileContents[] = new byte[zipFileBufferSize == 0 ? 100000000 : zipFileBufferSize];
FileInputStream zipIn = new FileInputStream(zipPathAndFileName);
int byteCount = zipIn.read(zipFileContents);
zipIn.close();
byte returnFileContents[] = new byte[byteCount];
System.arraycopy(zipFileContents,0,returnFileContents,0,byteCount);
String returnFileContentsString = new String(returnFileContents);
if (deleteZipFile)
boolean deletedFile = (new File(zipPathAndFileName)).delete();
oracle.sql.BLOB returnFileContentsBLOB = null;
returnFileContentsBLOB = BLOB.createTemporary(conn, true, BLOB.DURATION_SESSION);
returnFileContentsBLOB.open(BLOB.MODE_READWRITE);
//OutputStream tempBlobWriter = returnFileContentsBLOB.getBinaryOutputStream();
OutputStream tempBlobWriter = returnFileContentsBLOB.setBinaryStream(1);
tempBlobWriter.write(returnFileContents);
tempBlobWriter.flush();
tempBlobWriter.close();
returnFileContentsBLOB.close();
return returnFileContentsBLOB;
catch (IllegalArgumentException ex) {
ex.printStackTrace();
throw ex;
catch (FileNotFoundException ex) {
ex.printStackTrace();
throw ex;
catch (IOException ex)
ex.printStackTrace();
throw ex;
catch (java.sql.SQLException ex)
ex.printStackTrace();
throw ex;

860411 wrote:
Hi Team,
I am unable to compile the java class in the SQL PLUS in dev1 and dev2. It is giving the following error.
But the same class get Compiled in the Toad(Tool) without any error and working fine. Could someone help me
What to do for this for your reference ,Attaching the java class file.
“ORA-29536: badly formed source: Encountered "<EOF>" at line 1, column 28.
Was expecting one of:
I believe the error message is clear and self-explanatory.
----------------------Here is the Java class Code.....................
create or replace and compile java source named "XXVM_ZipFileUtil_Ela"
as
import java.math.BigDecimal;
import java.util.zip.Deflater;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import oracle.sql.*;
import oracle.jdbc.*;
import java.sql.*;
import java.io.*;
public class XXVM_ZipFileUtil_Ela
public static oracle.sql.BLOB getZipFile(
oracle.sql.CHAR zipFilePathCHAR, oracle.sql.CHAR zipFileNameCHAR,
int fileBufferSize, int zipFileBufferSize,
boolean deleteZipFile, java.sql.Array fileNames, java.sql.Array fileContents, java.sql.Array fileContentsLength)
throws IllegalArgumentException, FileNotFoundException, IOException, java.sql.SQLException
String zipFilePath = (zipFilePathCHAR == null) ? null : zipFilePathCHAR.stringValue();
String zipFileName = (zipFileNameCHAR == null) ? null : zipFileNameCHAR.stringValue();
String zipPathAndFileName = new String(
new String(zipFilePath == null || zipFilePath == "" ? "/tmp/" : zipFilePath) +
new String(zipFileName == null || zipFileName == "" ? System.currentTimeMillis() + ".zip" : zipFileName));
byte[] buffer = new byte[fileBufferSize == 0 ? 100000000 : fileBufferSize];
try
Connection conn = DriverManager.getConnection("jdbc:default:connection:");
oracle.sql.CLOB[] fileContentsCLOB = (oracle.sql.CLOB[])fileContents.getArray();
String[] fileNamesString = (String[])fileNames.getArray();
BigDecimal[] fileContentsLengthNumber = (BigDecimal[])fileContentsLength.getArray();
ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipPathAndFileName));
zipOut.setLevel(Deflater.DEFAULT_COMPRESSION);
for (int i = 0; i < fileNamesString.length; i++) {
System.out.println(i);
zipOut.putNextEntry(new ZipEntry(fileNamesString));
InputStream asciiStream = fileContentsCLOB[i].getAsciiStream(1L);
int asciiReadCount = asciiStream.read(buffer,0,fileContentsLengthNumber[i].intValue());
zipOut.write(buffer, 0, fileContentsLengthNumber[i].intValue());
zipOut.closeEntry();
zipOut.close();
byte zipFileContents[] = new byte[zipFileBufferSize == 0 ? 100000000 : zipFileBufferSize];
FileInputStream zipIn = new FileInputStream(zipPathAndFileName);
int byteCount = zipIn.read(zipFileContents);
zipIn.close();
byte returnFileContents[] = new byte[byteCount];
System.arraycopy(zipFileContents,0,returnFileContents,0,byteCount);
String returnFileContentsString = new String(returnFileContents);
if (deleteZipFile)
boolean deletedFile = (new File(zipPathAndFileName)).delete();
oracle.sql.BLOB returnFileContentsBLOB = null;
returnFileContentsBLOB = BLOB.createTemporary(conn, true, BLOB.DURATION_SESSION);
returnFileContentsBLOB.open(BLOB.MODE_READWRITE);
//OutputStream tempBlobWriter = returnFileContentsBLOB.getBinaryOutputStream();
OutputStream tempBlobWriter = returnFileContentsBLOB.setBinaryStream(1);
tempBlobWriter.write(returnFileContents);
tempBlobWriter.flush();
tempBlobWriter.close();
returnFileContentsBLOB.close();
return returnFileContentsBLOB;
catch (IllegalArgumentException ex) {
ex.printStackTrace();
throw ex;
catch (FileNotFoundException ex) {
ex.printStackTrace();
throw ex;
catch (IOException ex)
ex.printStackTrace();
throw ex;
catch (java.sql.SQLException ex)
ex.printStackTrace();
throw ex;
The last two lines above should be
/Srini

Difference b/w Java Class and Bean class

hi,
can anybody please tell me the clear difference between ordinary java class and java Bean class. i know that bean is also a java class but i donno the exact difference between the both.
can anybody please do help me in understanding the concept behind the bean class.
Thank u in advance.
Regards,
Fazlina

While researching this question, I came across this answer by Kim Fowler. I think it explains it better than any other answer I have seen in the forum.
Many thanks Kim
Hi
Luckily in the java world the definition of components is a little
less severe than when using COM (I also have, and still occasionaly
do, worked in the COM world)
Firstly there are two definitions that need to be clarified and
separated: JavaBean and EnterpriseJavaBean (EJB)
EJB are the high end, enterprise level, support for distributed
component architectures. They are roughly equivalent to the use of MTS
components in the COM/ COM+ world. They can only run within an EJB
server and provide support, via the server, for functionality such as
object pooling, scalability, security, transactions etc. In order to
hook into this ability EJB have sets of interfaces that they are
required to support
JavaBeans are standard Java Classes that follow a set of rules:
a) Hava a public, no argument constructor
b) follow a naming patterns such that all accessor and modifier
functions begin with set/ get or is, e.g.
public void setAge( int x)
public int getAge()
The system can then use a mechanism known as 'reflection/
introspection' to determine the properties of a JavaBean, literally
interacting with the class file to find its method and constructor
signatures, in the example above the JavaBean would end with a single
property named 'age' and of type 'int' The system simply drops the
'set' 'get' or 'is' prefix, switches the first letter to lower case
and deduces the property type via the method definition.
Event support is handled in a similar manner, the system looks for
methods similar to
addFredListener(...)
addXXXListener
means the JavaBean supports Fred and XXX events, this information is
particularly useful for Visual builder tools
In addition there is the abiliity to define a "BeanInfo' class that
explicitly defines the above information giving the capability to hide
methods, change names etc. this can also be used in the case where you
cannot, for one reason or another, use the naming patterns.
Finally the JavaBean can optionally - though usually does - support
the Serializable interface to allow persistence of state.
As well as standard application programming, JavaBeans are regularly
used in the interaction between Servlets and JSP giving the java
developer the ability to ceate ojbect using standard java whilst the
JSP developer can potentially use JSP markup tags to interact in a
more property based mechanism. EJB are heaviliy used in Enterprise
application to allow the robust distribution of process
HTH.
Kim

Drop java class and java source

Hi,
When I query user_objects I get some java class and java source objects
select * from user_objects where object_type like 'JAVA %';
How do I drop these java source and java class objects from the database
I tried using the following command
drop java class /4a524d89_AutoTransliteratorPk
drop java source AutoTransliteratorPkg
But I get error ORA-29501: invalid or missing Java source, class, or resource name
Please someone help me in dropping these objects
thanks
saaz

was the java source all caps or was it exactly AutoTransliteratorPkg. If its exactly AutoTransliteratorPkg then try this
drop java source "AutoTransliteratorPkg"

IMPDP to import JAVA CLASS and JAVA SOURCE from .DMP file

hi,
I have a schema X, In that schema some of the *"JAVA CLASS" and "JAVA SOURCE"* objects are missing ..
The procedures ,functions..etc objects were updated at X schema..
I have 1 dmp file of Y schema , containing the missing "JAVA CLASS" and "JAVA SOURCE" s.. Can I import the the same to the schema X using IMPDP
i tried using INCLUDE clause but it is not working
eg:
impdp john1/john1@me11g22 directory=datadump dumpfile=DEVF2WAR.DMP remap_schema=devf2war:john INCLUDE="JAVA CLASS","JAVA CLASS"but error..
ORA-39001: invalid argument value
ORA-39041: Filter "INCLUDE" either identifies all object types or no object types.regards,
jp

Hello,
You should type JAVA_CLASS and JAVA_SOURCE (use underscore instead of space).
impdp john1/john1@me11g22 directory=datadump dumpfile=DEVF2WAR.DMP remap_schema=devf2war:john INCLUDE="JAVA_CLASS","JAVA_CLASS"Best Regards,
Gokhan Atil
If this question is answered, please mark appropriate posts as correct/helpful and the thread as closed. Thanks

Only to import JAVA CLASS and JAVA SOURCE from .DMP file using IMPDP

hi,
I have a schema X, In that schema some of the *"JAVA CLASS" and "JAVA SOURCE"* objects are missing ..
The procedures ,functions..etc objects were updated at X schema..
I have 1 dmp file of Y schema , containing the missing "JAVA CLASS" and "JAVA SOURCE" s.. Can I import the the same to the schema X using IMPDP
i tried using INCLUDE clause but it is not working
eg:
impdp john1/john1@me11g22 directory=datadump dumpfile=DEVF2WAR.DMP remap_schema=devf2war:john INCLUDE="JAVA CLASS","JAVA CLASS"but error..
ORA-39001: invalid argument value
ORA-39041: Filter "INCLUDE" either identifies all object types or no object types.regards,
jp

Double post: IMPDP to import JAVA CLASS and JAVA SOURCE from .DMP file
Already replied.
Regards
Gokhan

Need help w/ created classes and objects

I am having a difficult time understanding what is wrong w/ my classes and objects. I've looked in two books and have messed around a bit. Here is what I am -attempting- to do.
I want to make a class called CLOTHING. In this class i want objects such as shirt and pants (for now).
these are the errors im getting:
.\Shirt.java:6: invalid method declaration; return type required
     public Shirt(int size){
               ^
.\Shirt.java:3: class Clothing is public, should be declared in a file named Clothing.java
public class Clothing {
       ^
MyClassHW.java:10: cannot resolve symbol
symbol : constructor Shirt (int,int)
location: class Shirt
          myShirt = new Shirt(1,1);
                          ^
3 errors------------------------------------------------------------
This is the code for my Clothing class:
import java.awt.*;
public class Clothing {
     private int shirtSize;
     private void Shirt(Graphics s, int h, int v){
     Polygon shirts;
          shirts = new Polygon();
          shirts.addPoint(5+h,8+v); // 1
          shirts.addPoint(17+h,12+v); // 2
          shirts.addPoint(19+h,13+v); // 3
          shirts.addPoint(33+h,8+v); // 4
          shirts.addPoint(37+h,13+v); // 5
          shirts.addPoint(25+h,20+v); // 6
          shirts.addPoint(25+h,28+v); // 7
          shirts.addPoint(15+h,28+v); // 8
          shirts.addPoint(15+h,20+v); // 9
          shirts.addPoint(1+h,12+v); //10
          s.fillPolygon(shirts);
}from what i understand each object is essentially a method...
Here is the code for the java applet I'm making:
import java.awt.event.*;
import java.awt.*;
import java.applet.*;
public class MyClassHW extends Applet { // implements ActionListener, AdjustmentListener {
     Shirt myShirt;
     int size;
     public void init(){
          myShirt = new Shirt(1,1);
// <applet code = "MyClassHW.class" height = 300 width=300> </applet>thank you for your time and help. as always, your efforts are appriciated.

.\Shirt.java:6: invalid method declaration; return type required     public Shirt(int size){
I guess, public Shirt(int size) is constructor in class shirt. You have one int in this constructor. Shirt(int size)
Here you initialize your shirt with two int:
MyClassHW.java:10: cannot resolve symbolsymbol : constructor Shirt (int,int)location: class Shirt          myShirt = new Shirt(1,1);
Shirt(int size, int what?)
It's why it show such message.
But even if you fix it seems like you have very vague ideas about what you are doing.
As far as I understood you need three classes.
First applet Clothing:
public class Clothing extends Applet{
Shirt myShirt;
Pants myPants;
public void init() {
myShirt = new Shirt(1); // small shirt
myPants = new Pants(32, 40); // medium waist and long legs
Second and third your classes Shirt and Pants:
public class Shirt extends Object {
int size;
public Shirt(int s) {
size = s;
public int getSize () {
return size;
same for Pants, only you need two parameters for it or whatever you want.
You could design it diffrently if you want derive your Shirts and Pants from Clothing and then to use them in your applet. But, indeeed, you desperately have to do some serious reading, where authors are accurate in they definitions and stuff, because it's kind of complicated.

What is the difference between acquiring lock on a CLASS and OBJECT (instance) of that class

What is the difference between acquiring lock on a CLASS and OBJECT (instance) of that class

What is the difference between acquiring lock on a CLASS and OBJECT (instance) of that class
The Java Tutotials has several trails that discuss both implicit and explicit locking, how they work and has code examples.
The Concurrency trail has the links to the other sections you need to review
http://docs.oracle.com/javase/tutorial/essential/concurrency/index.html
The Synchronized Methods and Intrinsic Locks and Synchronization trails discusse Synchronized Methods and Statements
http://docs.oracle.com/javase/tutorial/essential/concurrency/syncmeth.html
And the Lock Objects trail begins the coverage of explicit locking techniques.
http://docs.oracle.com/javase/tutorial/essential/concurrency/newlocks.html

MAT error: 0xHEX is used a class and object...

Hi there,
playing around some more with MAT I ran into the following error with some of my dumps. All were taken on 1.5 SUN JVMs (running on either Solaris or Linux).
org.eclipse.mat.snapshot.SnapshotException: Error: 0x8d776450 is used as class and object simultaneously. Are you using a beta DLL for Sun JDK 1.4.2 to write the heap dump?
at org.eclipse.mat.hprof.HprofParserHandlerImpl.createRequiredFakeClasses(HprofParserHandlerImpl.java:191)
at org.eclipse.mat.hprof.HprofParserHandlerImpl.beforePass2(HprofParserHandlerImpl.java:89)
at org.eclipse.mat.hprof.HprofIndexBuilder.fill(HprofIndexBuilder.java:76)
at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.parse(SnapshotFactoryImpl.java:183)
at org.eclipse.mat.parser.internal.SnapshotFactoryImpl.openSnapshot(SnapshotFactoryImpl.java:101)
at org.eclipse.mat.snapshot.SnapshotFactory.openSnapshot(SnapshotFactory.java:77)
at org.eclipse.mat.ui.internal.ParseHeapDumpJob.run(ParseHeapDumpJob.java:52)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Since the suggested problem (usage of JDK 1.4.2) is not the case: What else can I do to find out what is going on? Do I need any special switches for jmap? The dumps all were taken with the same command:
jmap -heap:format=b <pid>
Still, some work, some do not. Any suggestions?
bye, Michael

Hi Michael,
this smells like a bug. The easiest way again is to have a look at the dump. If you zip it, it should become smaller. I could also provide upload space. Right now, I am at the J1 in San Francisco so it might not be as easy for me to fix this.
Andreas.

Java classes and MySql Files

Hello,
There is a way to distribute the Mysql db files with yout java application without need to install Mysql in the computer, like in access, you just copy the .mdb file with your java class and create a conection to it.
Thank You

No. If you want to do that you should just use Access. mySQL files will not work without the mySQL server.

To Unable to Import Customize Java classes in Report Builder 10g

Hi,
In Report Builder 10g , I am trying to load image from Remote server
URL:"http://imagecache5.art.com/p/LRG/15/1544/1ABDD00Z/muhammad-ali-vs-sonny-liston.jpg"
Steps did in Report Builder 10g
1.In Report Builder Created a Formula column with
Datatype : Character
Read from File: Yes
File Format: Image
In Formula columns trying to Unable to Import Customize Java classes.
To read methods from Java classes.
Please help on this.
Ranga

Hello,
To import the Java classes:
Add your jar in the REPORTS_CLASSPATH
Launch Reports Builder.
Note:
You must launch Reports Builder now so that the new REPORTS_CLASSPATH is used.
Choose Program > Import Java Classes to display the Import Java Classes dialog box.
Regards

Do we have INCLUDE=JAVA CLASS AND INCLUDE=JAVA SOURCE OPTION IN DATA PUMP

Hi All ,
Can any one please tell me ,
how to import only java class and java source from datapump export file.
Include=java class or include=java source is not working ..
Thanks in advance,
Sanjeev.

Duplicate post.
datapump include option.
Lock this thread

Unable to map nested java classes and objects in actionscript using flex

Similar Messages

Maybe you are looking for