How to decide if Object is an array or single object

Hi ,
I have a function which can return an Array of objects or a single Object...how can I decided what function has returned to me.?...
I am looking for some way by which I can decided if it is an Array or a Object....
Thanks

How about:
yourObject.getClass().isArray(); // returns boolean

Similar Messages

How to call a method using a array of that object?

hey, another array question
for example i have 2 classes one name class and a driver
inside the name class i have method that gets the name
public Name getName1( ) {return name1;}
my question is if i created an array of Name objects in my driver with the following line
Name [ ] n1 = new Name [ ] ;
and i wanna call methods inside the name class using my array of Name that i created how do i do it?
thanks in advance

thanks for the reply Maxx
another question regarding arrays
for example if im doing an array of objects Name[ ] n1 = new Name [ ]
and i have a method that removes the name if its the same as the user input
if (n1[ i ].getName.equals(myName))
/ / if they equal it removes it,
else,
/ / the n[ 1 ] stays the same
ive search the forum for previous questions on this but their examples doesnt seems to work, can anyone help? also if end up using this remove method that checks the elements in n1 if it matches it will remove it what should i do to avoid nullpointerexceptions if i wanna shift it all down?
thanks in advance

Create Class objects from an Array of File Objects

Hi There,
I'm having extreme difficulty in trying to convert an array of file objects to Class objects. My problem is as follows: I'm using Jfilechooser to select a directory and get an array of files of which are all .class files. I want to create Class objects from these .class files. Therefore, i can extract all the constructor, method and field information. I eventually want this class information to display in a JTree. Very similar to the explorer used in Netbeans. I've already created some code below, but it seems to be throwing a NoSuchMethodError exception. Can anyone please help??
Thanks in advance,
Vikash
/* the following is the class im using */
class FileClassLoader extends ClassLoader {
private File file;
public FileClassLoader (File ff) {
this.file = ff;
protected synchronized Class loadClass() throws ClassNotFoundException {
Class c = null;
try {
// Get size of class file
int size = (int)file.length();
// Reserve space to read
byte buff[] = new byte[size];
// Get stream to read from
FileInputStream fis = new FileInputStream(file);
DataInputStream dis = new DataInputStream (fis);
// Read in data
dis.readFully (buff);
// close stream
dis.close();
// get class name and remove ".class"
String classname = null;
String filename = file.getName();
int i = filename.lastIndexOf('.');
if(i>0 && i<filename.length()-1) {
classname = filename.substring(0,i);
// create class object from bytes
c = defineClass (classname, buff, 0, buff.length);
resolveClass (c);
} catch (java.io.IOException e) {
e.printStackTrace();
return c;
} // end of method loadClass
} // end of class FileClassLoader
/* The above class is used in the following button action in my gui */
/* At the moment im trying to output the data to standard output */
private void SelectPackage_but2ActionPerformed(java.awt.event.ActionEvent evt) {
final JFileChooser f = new JFileChooser();
f.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int rVal = f.showOpenDialog(Remedy.this);
// selects directory
File dir = f.getSelectedFile();
// gets a list of files within the directory
File[] allfiles = dir.listFiles();
// for loop to filter out all the .class files
for (int k=0; k < allfiles.length; k++) {
if (allfiles[k].getName().endsWith(".class")) {
try {
System.out.println("File name: " + allfiles[k].getName()); // used for debugging
FileClassLoader loader = new FileClassLoader(allfiles[k]);
Class cl = loader.loadClass();
//Class cl = null;
Class[] interfaces = cl.getInterfaces();
java.lang.reflect.Method[] methods = cl.getDeclaredMethods();
java.lang.reflect.Field[] fields = cl.getDeclaredFields();
System.out.println("Class Name: " + cl.getName());
//print out methods
for (int m=0; m < methods.length; m++) {
System.out.println("Method: " + methods[m].getName());
// print out fields
for (int fld=0; fld < fields.length; fld++) {
System.out.println("Field: " + fields[fld].getName());
} catch (Exception e) {
e.printStackTrace();
} // end of if loop
} // end of for loop
packageName2.setText(dir.getPath());
}

It's throwing the exeption on the line:
FileClassLoader loader = new FileClassLoader(allfiles[k]);
I'm sure its something to do with the extended class i've created. but i cant seem to figure it out..
Thanks if you can figure it out

How can I sort a collection of array with different object types in it ?

Hi all,
I have a collection of ArrayList; each array contains, at the first position, the same object type.
I'd like sorting the collection by the name contained in the object at the first position of each array.
Any suggestion ?
Cheers.
Stefano

so you have a collection of a collection?
My guess is that:
You could subclass the arraylist and override it's compareTo method (I think that it implements comparable already but if not, go ahead and implement that interface).
Or you could wrap your arraylist in another class that implements comparable.
The key in my mind is correctly coding your compareTo method to look at the name in the first item of the arraylists. This should be doable and not too difficult.
Correction: after reviewing the ArrayList api, I see that it doesn't implement the Comparable interface. You will have to make any class that either inherits arraylist or contains arraylist implement the comparable interface.
One last thing: This question would probably have been better off in the java forum and not the Swing forum since it doesn't really involve Swing.
Good luck!
Edited by: petes1234 on Nov 19, 2007 6:17 AM

How can i convert object to byte array very*100 fast?

i need to transfer a object by datagram packet in embeded system.
i make a code fallowing sequence.
1) convert object to byte array ( i append object attribute to byte[] sequencailly )
2) send the byte array by datagram packet ( by JNI )
but, it's not satisfied my requirement.
it must be finished in 1ms.
but, converting is spending 2ms.
network speed is not bottleneck. ( transfer time is 0.3ms and packet size is 4096 bytes )
Using ObjectOutputStream is very slow, so i'm using this way.
is there antoher way? or how can i improve?
Edited by: JongpilKim on May 17, 2009 10:48 PM
Edited by: JongpilKim on May 17, 2009 10:51 PM
Edited by: JongpilKim on May 17, 2009 10:53 PM

thanks a lot for your reply.
now, i use udp socket for communication, but, i must use hardware pci communication later.
so, i wrap the communication logic to use jni.
for convert a object to byte array,
i used ObjectInputStream before, but it was so slow.
so, i change the implementation to use byte array directly, like ByteBuffer.
ex)
public class ByteArrayHelper {
private byte[] buf = new byte[1024];
int idx = 0;
public void putInt(int val){
buf[idx++] = (byte)(val & 0xff);
buf[idx++] = (byte)((val>>8) & 0xff);
buf[idx++] = (byte)((val>>16) & 0xff);
buf[idx++] = (byte)((val>>24) & 0xff);
public void putDouble(double val){ .... }
public void putFloat(float val){ ... }
public byte[] toByteArray(){ return this.buf; }
public class PacketData {
priavte int a;
private int b;
public byte[] getByteArray(){
ByteArrayHelper helper = new ByteArrayHelper();
helper.putInt(a);
helper.putInt(b);
return helper.toByteArray();
but, it's not enough.
is there another way to send a object data?
in java language, i can't access memory directly.
in c language, if i use struct, i can send struct data to copy memory by socket and it's very fast.
Edited by: JongpilKim on May 18, 2009 5:26 PM

How to create an collection/array/object/thingy from a bunch of objects for eventual export to CSV.

This is a follow-up to an earlier post (How
to output a bunch of variables into a table.) Now that I can ouput data for a single computer I need to to do the same for a list of computers into a CSV. In more general terms how do I get a bunch of $Computer objects into a single collection/array/object/thingy
with a clever name like $Computers?
# http://ss64.com/ps/get-wmiobject-win32.html
# http://social.technet.microsoft.com/Forums/en-US/da54b6ab-6941-4e45-8697-1d3236ba2154/powershell-number-of-cpu-sockets-wmi-query?forum=winserverpowershell
# http://serverfault.com/questions/10328/determine-cpu-processors-vs-sockets-though-wmi
# http://social.technet.microsoft.com/Forums/windowsserver/en-US/8443fcfd-5a0b-4c3d-bda7-26df83d2ee92/how-to-output-a-bunch-of-variables-into-a-table?forum=winserverpowershell
Param(
[Parameter(Mandatory=$false,ValueFromPipeline=$true)]
[string]$ComputerName = $env:COMPUTERNAME,
[Parameter(Mandatory=$false,ValueFromPipeline=$false)]
[ValidateScript(
If ( $_ -ne $null ) { Test-Path $_ }
[String]$ComputerListFile
Function Get-Computer
Param(
[string]$ComputerName
$Win32_PingStatus = $null
$Win32_PingStatus_Result = $null
$Win32_OperatingSystem = $null
$Win32_Processor = $null
$Win32_PhysicalMemory = $null
$Win32_ComputerSystem = $null
$Win32_BIOS = $null
$Computer = $null
$Win32_PingStatus = "select * from Win32_PingStatus where address = '$ComputerName'"
$Win32_PingStatus_Result = Get-WmiObject -query $Win32_PingStatus
If ( $Win32_PingStatus_Result.protocoladdress )
"$ComputerName ping succeeded."
$Win32_OperatingSystem = Get-WmiObject Win32_OperatingSystem -computer $ComputerName -ErrorAction SilentlyContinue
If ( $Win32_OperatingSystem -eq $null)
"$ComputerName WMI failed."
} Else {
"$ComputerName WMI succeeded."
$Win32_Processor = [object[]]$(Get-WmiObject Win32_Processor -computer $ComputerName)
$Win32_PhysicalMemory = [object[]]$(Get-WmiObject Win32_PhysicalMemory -computer $ComputerName)
$Win32_ComputerSystem = Get-WmiObject Win32_ComputerSystem -computer $ComputerName
$Win32_BIOS = Get-WmiObject Win32_BIOS -computer $ComputerName
$Computer = New-Object -Type PSObject -Property @{
Name = $Win32_OperatingSystem.CSName
Win32_BIOS_SerialNumber = [string]$Win32_BIOS.SerialNumber
Win32_ComputerSystem_Manufacturer = [string]$Win32_ComputerSystem.Manufacturer
Win32_ComputerSystem_Model = [string]$Win32_ComputerSystem.Model
#Win32_ComputerSystem_NumberOfLogicalProcessors = [int32]$Win32_ComputerSystem.NumberOfLogicalProcessors
#Win32_ComputerSystem_NumberOfProcessors = [int32]$Win32_ComputerSystem.NumberOfProcessors
Win32_ComputerSystem_TotalPhysicalMemory = [long]$Win32_ComputerSystem.TotalPhysicalMemory
Win32_ComputerSystem_TotalPhysicalMemory_GB = [float]($Win32_ComputerSystem.TotalPhysicalMemory / (1024*1024*1024))
Win32_OperatingSystem_Caption = [string]$Win32_OperatingSystem.Caption
Win32_OperatingSystem_CSName = [string]$Win32_OperatingSystem.CSName
#Win32_OperatingSystem_OSArchitecture = [string]$Win32_OperatingSystem.OSArchitecture
#Win32_OperatingSystem_SerialNumber = [string]$Win32_OperatingSystem.SerialNumber
Win32_OperatingSystem_ServicePackVersion = [string]$Win32_OperatingSystem.ServicePackMajorVersion + "." + [string]$Win32_OperatingSystem.ServicePackMinorVersion
Win32_PhysicalMemory_Capacity = ($Win32_PhysicalMemory | ForEach-Object { $_.Capacity } | Measure-Object -Sum).sum
Win32_PhysicalMemory_Capacity_GB = (($Win32_PhysicalMemory | ForEach-Object { $_.Capacity } | Measure-Object -Sum).sum / (1024*1024*1024))
Win32_Processor_Count = [int]$Win32_Processor.Count
Win32_Processor_NumberOfCores = [string]$Win32_Processor[0].NumberOfCores
Win32_Processor_NumberOfLogicalProcessors = [string]$Win32_Processor[0].NumberOfLogicalProcessors
#Win32_Processor_Description = [string]$Win32_Processor[0].Description
Win32_Processor_Manufacturer = [string]$Win32_Processor[0].Manufacturer
Win32_Processor_Name = [string]$Win32_Processor[0].Name
} ## end new-object
$Computer
} Else {
"$ComputerName ping failed."
$ComputerNameMgmt = $ComputerName + "-mgmt"
$Win32_PingStatus = "select * from Win32_PingStatus where address = '$ComputerNameMgmt'"
$Win32_PingStatus_Result = Get-WmiObject -query $Win32_PingStatus
If ( $Win32_PingStatus_Result.protocoladdress )
"$ComputerNameMgmt ping succeded."
} Else {
"$ComputerNameMgmt ping failed."
"$(Get-Date -Format o) Starting script $($MyInvocation.MyCommand.Name)"
If ( $ComputerListFile -eq $null -or $ComputerListFile.Length -eq 0 )
"Processing computer $ComputerName"
Get-Computer( $ComputerName )
} Else {
"Processing computer list $ComputerList"
$ComputerList = Get-Content $ComputerListFile
$Computers = @{}
$Results = @()
ForEach( $ComputerListMember in $ComputerList )
"$(Get-Date -Format o) $ComputerListMember"
# Get-Computer( $ComputerListMember ) | Add-Member -InputObject $Computers -MemberType NoteProperty -Name $_
# http://social.technet.microsoft.com/Forums/windowsserver/en-US/e7d602a9-a808-4bbc-b6d6-dc78079aafc9/powershell-to-ping-computers
# $Compuers += New-Object PSObject -Property $Props
# $Computers += New-Object PSObject -Property Get-Computer( $ComputerListMember )
Get-Computer( $ComputerListMember )
"$(Get-Date -Format o) Ending script $($MyInvocation.MyCommand.Name)"
If I try something like this:
Get-Computer( $ComputerListMember ) | Add-Member -InputObject $Computers -MemberType NoteProperty -Name $_
I get the following, even though $_.Name is not null.
Add-Member : Cannot bind argument to parameter 'Name' because it is null.
At <path to my script>Get-Hardware_Memory_OSVersion_CPU_Cores_ver04_sanitized.ps1:111 char:107
+ Get-Computer( $ComputerListMember ) | Add-Member -InputObject $Computers -MemberType NoteProperty -Name <<<< $_
+ CategoryInfo : InvalidData: (:) [Add-Member], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.AddMemberCommand
Or if I try this:
$Computers += New-Object PSObject -Property Get-Computer( $ComputerListMember )
I get this:
New-Object : Cannot bind parameter 'Property'. Cannot convert the "Get-Computer" value of type "System.String" to type "System.Collections.Hashtable".
At <path to my script>Get-Hardware_Memory_OSVersion_CPU_Cores_ver04_sanitized.ps1:114 char:47
+ $Computers += New-Object PSObject -Property <<<< Get-Computer( $ComputerListMember )
+ CategoryInfo : InvalidArgument: (:) [New-Object], ParameterBindingException
+ FullyQualifiedErrorId : CannotConvertArgumentNoMessage,Microsoft.PowerShell.Commands.NewObjectCommand

Hi Aenagy,
If you want to combine all the computers' information to a single array, and add the property computername in the output, please also try the script below, which I make a little modification of the function Get-Computer, pleaese make sure the account running
the script has the admin permission of the remote computers, or you need to privide cridentials in get-wmiobject, also note I haven't tested:
$output = @()#to output information of the all the computers
ForEach( $ComputerName in $ComputerList ){#loop all the computers
$Win32_PingStatus = "select * from Win32_PingStatus where address = '$ComputerName'"
$Win32_PingStatus_Result = Get-WmiObject -query $Win32_PingStatus
If ( $Win32_PingStatus_Result.protocoladdress )
"$ComputerName ping succeeded."
$Win32_OperatingSystem = Get-WmiObject Win32_OperatingSystem -computer $ComputerName -ErrorAction SilentlyContinue
If ( $Win32_OperatingSystem -eq $null)
"$ComputerName WMI failed."
Else {
"$ComputerName WMI succeeded."
$Win32_Processor = [object[]]$(Get-WmiObject Win32_Processor -computer $ComputerName)
$Win32_PhysicalMemory = [object[]]$(Get-WmiObject Win32_PhysicalMemory -computer $ComputerName)
$Win32_ComputerSystem = Get-WmiObject Win32_ComputerSystem -computer $ComputerName
$Win32_BIOS = Get-WmiObject Win32_BIOS -computer $ComputerName
$Computer = New-Object -Type PSObject -Property @{
Computername = $ComputerName #add the property computername
Name = $Win32_OperatingSystem.CSName
Win32_BIOS_SerialNumber = [string]$Win32_BIOS.SerialNumber
Win32_ComputerSystem_Manufacturer = [string]$Win32_ComputerSystem.Manufacturer
Win32_ComputerSystem_Model = [string]$Win32_ComputerSystem.Model
#Win32_ComputerSystem_NumberOfLogicalProcessors = [int32]$Win32_ComputerSystem.NumberOfLogicalProcessors
#Win32_ComputerSystem_NumberOfProcessors = [int32]$Win32_ComputerSystem.NumberOfProcessors
Win32_ComputerSystem_TotalPhysicalMemory = [long]$Win32_ComputerSystem.TotalPhysicalMemory
Win32_ComputerSystem_TotalPhysicalMemory_GB = [float]($Win32_ComputerSystem.TotalPhysicalMemory / (1024*1024*1024))
Win32_OperatingSystem_Caption = [string]$Win32_OperatingSystem.Caption
Win32_OperatingSystem_CSName = [string]$Win32_OperatingSystem.CSName
#Win32_OperatingSystem_OSArchitecture = [string]$Win32_OperatingSystem.OSArchitecture
#Win32_OperatingSystem_SerialNumber = [string]$Win32_OperatingSystem.SerialNumber
Win32_OperatingSystem_ServicePackVersion = [string]$Win32_OperatingSystem.ServicePackMajorVersion + "." + [string]$Win32_OperatingSystem.ServicePackMinorVersion
Win32_PhysicalMemory_Capacity = ($Win32_PhysicalMemory | ForEach-Object { $_.Capacity } | Measure-Object -Sum).sum
Win32_PhysicalMemory_Capacity_GB = (($Win32_PhysicalMemory | ForEach-Object { $_.Capacity } | Measure-Object -Sum).sum / (1024*1024*1024))
Win32_Processor_Count = [int]$Win32_Processor.Count
Win32_Processor_NumberOfCores = [string]$Win32_Processor[0].NumberOfCores
Win32_Processor_NumberOfLogicalProcessors = [string]$Win32_Processor[0].NumberOfLogicalProcessors
#Win32_Processor_Description = [string]$Win32_Processor[0].Description
Win32_Processor_Manufacturer = [string]$Win32_Processor[0].Manufacturer
Win32_Processor_Name = [string]$Win32_Processor[0].Name
} ## end new-object
$output+=$Computer #combine all the "$computer" to "$output"
Else {
"$ComputerName ping failed."
$output
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Anna
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How to pass Array of Java objects to Callable statement

Hi ,
I need to know how can I pass an array of objects to PL/SQL stored procedure using callable statement.
So I am having and array list of some object say xyz which has two attributes string and double type.
Now I need to pass this to a PL/SQL Procedure as IN parameter.
Now I have gone through some documentation for the same and found that we can use ArrayDescriptor tp create array (java.sql.ARRAY).
And we will use a record type from SQL to map this to our array of java objects.
So my question is how this mapping of java object's two attribute will be done to the TYPE in SQL? can we also pass this array as a package Table?
Please help
Thanks

I seem to remember that that is in one of Oracle's online sample programs.
http://www.oracle.com/technology/sample_code/tech/java/sqlj_jdbc/index.html

How to bind bar chart(columns) to array list object in c# win form

how to bind bar chart(columns) to array list object in c#win form

Hi Ramesh,
Did you want to bind list object to bar chart? I made a simple code to achieve binding list to bar chart.
public partial class Form0210 : Form
public Form0210()
InitializeComponent();
private void Form0210_Load(object sender, EventArgs e)
BindData();
public void BindData()
List<int> yValues = new List<int>(new int[] { 20, 30, 10, 90, 50 });
List<string> xValues = new List<string>(new string[] { "1:00", "2:00", "3:00", "4:00", "5:00" });
chart1.Series[0].Points.DataBindXY(xValues, yValues);
The links below might be useful to you:
# Data Binding Microsoft Chart Control
http://blogs.msdn.com/b/alexgor/archive/2009/02/21/data-binding-ms-chart-control.aspx
# Series and Data Points (Chart Controls)
https://msdn.microsoft.com/en-us/library/vstudio/dd456769(v=vs.100).aspx
In addition, if I misunderstood you, please share us more information about your issue.
Best Regards,
Edward
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How do I insert an object in an array?

How can I insert an object in an array of variable size?
I input two numbers from keyboard
1
2that form the following object (Pair)
(1,2)
how can I add such objects to an array
private Pair s[];
e.g.
public PairList(int x){
top = -1;
s = new Pair[x];
}//constructor
public void getPairs()throws FullException{
BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
try{
a=input.readLine();b=input.readLine();
}//try
catch(IOException e){System.out.println("Can't read input");}//catch
int x=0;
int y=0;
try{
x=Integer.parseInt(a);}//try
catch(NumberFormatException e){}
try{
y=Integer.parseInt(b);}//try
catch(NumberFormatException e){}
Pair k=new Pair(x,y);
System.out.println(k);
s[++top]=k; --here is my problem
}//getPairs

I tried making as few changes to your code as possible, but your idea should basically work. Potential problems:
1. Doesn't allow for more input than 1 pair.
2. By storing pair in an array, you must know the exact size of the array you will need beforehand. You might be better off storing the Pair(s) in a Vector and then converting that to an array.
3.Your exception handlers need some work. Basically, your exception handlers put out a message or do nothing and then you continue processing. Not good.
4. No cleanup of file resources after you have completed
import java.io.*;
public class PairList{
     private Pair s[];
     private int top;
     public PairList(int x){
          top = -1;
          s = new Pair[x];
     }//constructor
     public void getPairs()throws Exception{
          BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
          String a = null, b = null;
          try{
               a=input.readLine();
               b=input.readLine();
          }//try
          catch(IOException e){
               System.out.println("Can't read input");
          }//catch
          int x=0;
          int y=0;
          try{
               x=Integer.parseInt(a);
          }//try
          catch(NumberFormatException e){
          try{
               y=Integer.parseInt(b);}//try
          catch(NumberFormatException e){
          Pair k=new Pair(x,y);
          System.out.println(k.toString());
          s[++top]=k; //here is my problem
     }//getPairs
class Pair {
     private int xx;
     private int yy;
     public Pair(int x, int y) {
          xx = x;
          yy = y;
     public String toString() {
          return("X = " + xx + " Y = " + yy);
}

How to access child movieclip info of an object in an array?

Hi
I've dynamically created a whole bunch of movieclips.
I've given each clip a name based on a variable number:
     mc.name = "mc"+i;
I've also use addChild to add a couple of dynamic text fields to each movieClip, named myText1 and myText2.
I then push each movieClip object into an array:
     myArray.push(mc);
When I addChild the movieClips, they display fine, complete with each textField. And if I use the following loop to trace the name of each clip in the array, I get:
     for(var i=0; i<myArray.length; i++)
               trace(myArray[i].name);
output:
     mc1
     mc2
     mc3
     mc4
etc
What I want to now is be able to access the text fields within each movieclip in the array. However, I am getting errors when I try different ways. For example:
     for(var i=0; i<myArray.length; i++)
               trace(myArray[i].myText1.text);
gives the error: A term is undefined and has no properties.
How do you access the values and contents of the children of movieClip objects that are stored in arrays?
Thanks
Shaun

For whatever reason, dynamically added children cannot be targeted that way. If you added the textfields dynamically you may need to use getChildByName() to target them. It partly depends on how you created them and whether or not you have direct access to them. Aside from that you could also assign the textfields to variables that you create for the mc and target those by their variable names.
The following demos these two approaches:
var mc:MovieClip = new MovieClip();
addChild(mc);
var tf:TextField = new TextField();
tf.text = "this is text";
mc.addChild(tf);
// first way
tf.name = "tfield";
trace(TextField(mc.getChildByName("tfield")).text);
// second way
mc.tfid = tf;
trace(mc.tfid.text);
You could also store the textfields in arrays as they are created and have direct access to them with out the need to target the mc... the index should be the same as that which you use for the mc anyways.

How to convert a Image object to byte Array?

Who can tell me, how to convert Image object to byte Array?
Example:
public byte[] convertImage(Image img) {
byte[] b = new byte...........
return b;

Hello,
any way would suit me, I just need a way to convert Image or BufferedImage to a byte[], so that I can save them. Actually I need to save both jpg and gif files without using any 3rd party classes. Please help me out.
thanx and best wishes

How do I convert an Object into an Array?

If I have an instance of type object that I know is really a DataGrid row that was cast into an object when passed to a function, how can I cast that Object to an array, such that each index of this array would correspond to the information in a given column of the row?

@Sathyamoorthi
Can you please explain what this function does? Essentially, what should be contained in the String?
I printed out the string and it seems like I am getting a random row in the Object, as opposed to first or last. Why is that?
UPDATE: I printed out the value of dataGrid0.columns[5].dataField but it just turned out to be the id of the column.

How to hide objects in this array

hi so i want to hide these object in this array
var rdCounts:Array = [2,4 ,58 ,3,7,8 9]
var NewPassenger:Array= new Array();
im spawning movie clips to the numbers u see in rdCount, and i an using push to put then on NewPassenge i was wondering how can i make them all invisible uing .visible = false;
thanks,
hen

What are those values in the rdCounts supposed to be doing for you? 5516/1000 = 5.516.... so...
var theAmount:int = rdCounts[timeline_slider.value];
doesn't make much sense, especially since most of the array values will result in the same int value of 5.
One thing you have said, at leasnce... "i have a ratio buttion called original_rb everytime it is selected all the movieclips that is spawning from the code up there i want to be invisible, becuase i have a nother graph set to become visible when original_rb is selected.
But the function you showed is not being called for clicking the original_rb, it is being called for clicking le_rb. So maybe that's what you are missing... targeting the wrong rb for clicking.
I am not intending this as an insult, but I think you might have homed in on the main problem when you said...
"ive had alot of hep with this so it might not make sense"
If you don't know if it makes sense and you don't understand it then you probably need to spend more time trying to. If someone else did what you are showing for you, they might need some more experience as well.
Radio buttons are usually used as a group, where one of the group is selected. You seem to be using radio buttons where checkboxes or buttons would be more appropriate.
The code that has answered you questions so far would work if your design supports it. So chances are you design isn't what your code is aimed at... though I would expect error messages in that case.
There have been quite a few questions asked that have not been answered yet. Probably the most meaningful of them is whether or not you are getting error messages. If you are, including the entire error message(s) in your posting is key to getting help.

How to create an array of an object,

Hi,
Trying this in Oracle 10.3 studio, I have to use a web service, I have re-catalogued the web service succesfully,
I am getting compilation error whenI try to create an array of a object,
Services.PackageTrackingService.PackageTrackingItem[] pkgTrackingItem = new Services.PackageTrackingService.PackageTrackingItem[2];
I am giving the array size as 2,
The comilation error is showing as
Multiple markers at this line
- statement is expected
- Expecting ';' but 'pkgTrackingItem' was found
- expression is expected
Is there any other way to create the array?
Thanks in advance.
-Sree

Hi,
Please declare the array in following manner.
Services.PackageTrackingService.PackageTrackingItem[] pkgTrackingItem;
Now you can insert the element into the array by pkgTrackingItem[0], pkgTrackingItem[1] etc.
Bibhu

How to decide if an object was completely encoded using XMLEncoder

Hi, 'completely encoded' means that the object reconstructed from XMLDecoder is equal to the original object. Here is an example class which is not 'completely encoded' (because one of its properties is of type java.awt.geom.Point2D):
public static class SomeBean {
  private Dimension size;
  private Point2D location;
  public Dimension getSize() {
    return size;
  public void setSize(Dimension size) {
    this.size = size;
  public Point2D getLocation() {
    return location;
  public void setLocation(Point2D point) {
    this.location = point;
  public String toString() {
    return getClass().getName() + "[location=" + location +
      ",size=" + size + "]";
here is the corresponding XML representation:
<?xml version="1.0" encoding="UTF-8"?>
<java version="1.5.0_12" class="java.beans.XMLDecoder">
  <object class="XML_Persistence$SomeBean">
    <void property="location">
      <object class="java.awt.geom.Point2D$Float"/>
    </void>
    <void property="size">
      <object class="java.awt.Dimension">
        <int>42</int>
        <int>42</int>
      </object>
    </void>
  </object>
</java>
By printing out the two objects, you can see that they are not equal:
Serializing: XML_Persistence$SomeBean[location=Point2D.Float[42.0, 42.0],size=java.awt.Dimension[width=42,height=42]]
Deserialzed: XML_Persistence$SomeBean[location=Point2D.Float[0.0, 0.0],size=java.awt.Dimension[width=42,height=42]]
It isn't problematic for my app if an object cannot be 'completely encoded', i'm just looking for a reliable way to know.
Thanks, Hans

ejp wrote:
This is very odd. The XMLEncoder already does a trial decode to make sure it has serialized the object.
Doesn't a line like this one
<object class="java.awt.geom.Point2D$Float"/>
indicate that an object (as part of an object graph) was encoded without any additional information?Exactly. But the XMLEncoder assumes wevertying is a Java bean, with getters and setters. Any object without set methods isn't going to be serialized correctly. You need to add your own PersistenceDelegate for any such classes you find.Thanks, ejp - knowing that an object cannot be reconstructed by encoding/decoding it would be sufficient. Currently my strategy is:
a) Encode the object to memory, using XMLEncoder.
b) If no exceptions were thrown, parse the resulting XML for lines of the form "<object ... />". If any such line is found, the object is no candidate for XML-serialization.
c) If the object (or a super-class) overrides Object.equals, the XML is decoded and the resulting object is compared to the original one.

How to decide if Object is an array or single object

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