Array as object's name

Hi,
I am a newbie in actionscripting. However, I do have a
background in c++ and java programming.
I make a flash with 12 movie clips. I want them move
depending on the mouse's position.
I have the code so that it works to one of the instance,
let's call it "movclip1".
Then, I apply that code to all of the 12 instances.
I can make arrays for the positions and sizes of those 12
instances. However, I have to do like this since I can't use array
as the instance's name.
for(int i=0;i<12;i++)
if(i==0) { movclip1._x++; movclip1._y--; }
if(i==1) { movclip2._x++; movclip2._y--; }
if(i==2) { movclip3._x++; movclip3._y--; }
My code is longer than that. I wish I could just put the
instance's name as an array so the code won't be tiring like that.
Any suggestion? Thank you in advance.
-Shendy

You can have an "array" of instancenames, by using their
parent with a slightly strange notation.
In your case that would be:

Similar Messages

How to pass a array of object to oracle procedure using callable

Hi,
I am calling a oracle stored procedure using callable statement which has IN and OUT parameter of same type.
IN and OUT are array of objects. (ie) IN parameter as Array of Objects and OUT parameter as Array of Objects
here are the steps i have done as advised from oracle forum. correct me if i am in wrong direction
ORACLE types and Stored Procedure
CREATE OR REPLACE
TYPE APPS.DEPARTMENT_TYPE AS OBJECT (
DNO NUMBER (10),
NAME VARCHAR2 (50),
LOCATION VARCHAR2 (50)
CREATE OR REPLACE
TYPE APPS.DEPT_ARRAY AS TABLE OF department_type;
CREATE OR REPLACE package body APPS.insert_object
IS
PROCEDURE insert_object_prc (d IN dept_array, d2 OUT dept_array)
IS
BEGIN
d2 := dept_array ();
FOR j IN 1 .. d.COUNT
LOOP
d2.EXTEND;
d2 (j) := department_type (d (j).dno, d (j).name, d(j).location);
END LOOP;
END insert_object_prc;
END insert_object;
JAVA CODE
Value Object
package com.custom.vo;
public class Dep {
public int empNo;
public String depName;
public String location;
public int getEmpNo() {
return empNo;
public void setEmpNo(int empNo) {
this.empNo = empNo;
public String getDepName() {
return depName;
public void setDepName(String depName) {
this.depName = depName;
public String getLocation() {
return location;
public void setLocation(String location) {
this.location = location;
to call stored procedure
package com.custom.callable;
import com.custom.vo.Dep;
import oracle.jdbc.OracleCallableStatement;
import oracle.jdbc.OracleConnection;
import oracle.jdbc.OracleTypes;
import oracle.jdbc.pool.OracleDataSource;
import oracle.sql.ARRAY;
import oracle.sql.ArrayDescriptor;
import oracle.sql.Datum;
import oracle.sql.STRUCT;
import oracle.sql.StructDescriptor;
public class CallableArrayTryOut {
private static OracleDataSource odcDataSource = null;
public static void main(String[] args) {
OracleCallableStatement callStatement = null;
OracleConnection connection = null;
try {
odcDataSource = new OracleDataSource();
odcDataSource
.setURL("......");
odcDataSource.setUser("....");
odcDataSource.setPassword("....");
connection = (OracleConnection) odcDataSource.getConnection();
} catch (Exception e) {
System.out.println("DB connection Exception");
e.printStackTrace();
Dep[] dep = new Dep[2];
dep[0] = new Dep();
dep[0].setEmpNo(100);
dep[0].setDepName("aaa");
dep[0].setLocation("xxx");
dep[1] = new Dep();
dep[1].setEmpNo(200);
dep[1].setDepName("bbb");
dep[1].setLocation("yyy");
try {
StructDescriptor structDescriptor = new StructDescriptor(
"APPS.DEPARTMENT_TYPE", connection);
STRUCT priceStruct = new STRUCT(structDescriptor, connection, dep);
STRUCT[] priceArray = { priceStruct };
ArrayDescriptor arrayDescriptor = ArrayDescriptor.createDescriptor(
"APPS.DEPT_ARRAY", connection);
ARRAY array = new ARRAY(arrayDescriptor, connection, priceArray);
callStatement = (OracleCallableStatement) connection
.prepareCall("{call insert_object.insert_object_prc(?,?)}");
((OracleCallableStatement) callStatement).setArray(1, array);
callStatement.registerOutParameter(2, OracleTypes.ARRAY,
"APPS.DEPT_ARRAY");
callStatement.execute();
ARRAY outArray = callStatement.getARRAY(2);
Datum[] datum = outArray.getOracleArray();
for (int i = 0; i < datum.length; i++) {
oracle.sql.STRUCT os = (oracle.sql.STRUCT) datum[0];
Object[] a = os.getAttributes();
for (int j = 0; j < a.length; j++) {
System.out.print("Java Data Type :"
+ a[j].getClass().getName() + "Value :" + a[j]
+ "\n");
connection.commit();
callStatement.close();
} catch (Exception e) {
System.out.println("Mapping Error");
e.printStackTrace();
THE ERROR
Mapping Errorjava.sql.SQLException: Inconsistent java and sql object types
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:179)
at oracle.jdbc.dbaccess.DBError.check_error(DBError.java:1130)
at oracle.sql.StructDescriptor.toOracleArray(StructDescriptor.java:823)
at oracle.sql.StructDescriptor.toArray(StructDescriptor.java:1735)
at oracle.sql.STRUCT.<init>(STRUCT.java:136)
at com.custom.callable.CallableArrayTryOut.main(CallableArrayTryOut.java:48)

You posted this question in the wrong forum section. There is one dedicated to Java that was more appropriate.
Anyway here is a link that describes what you should do.
http://download.oracle.com/docs/cd/B19306_01/java.102/b14355/oraarr.htm#i1049179
Bye Alessandro

Access nested array element using this.name - is it possible?

Hi
I've got a nested array containing a series of 2 element arrays containing an object name, and text related to that object.
I've set it up like this:
public var names:Array = [["instance name 1", "text for first object"],["instance name 2", "text for second object"], ...]];
What I'm trying to do is to have the text related to the object appear in a text box when the object is moved.
This is all set up within a class containing code for the drag and drop functions.
If I set the text box to show a specific element, such as:
MovieClip(parent).text_box.text= names[2][1];
it works fine. But I can't get it to create the value for the first bracket from the this.name attribute.
I had it working for 2 arrays - one with the name and another with the text where the code was;
MovieClip(parent).text_box.text= texts[names.indexOf(this.name)]; (arrays named 'names' and 'texts', text box named 'text_box')
I'm hoping there's something similar that I can do for the nested array, but everything I try gives me the #1010 error - term undefined.
Is there an easy way to sort this out - or am I better sticking with the 2 array version?
(BTW this is my first go at using arrays)
Thanks

Why not use an Object for this, like:
var oTexts:Object = {
                              "clipname1":"text for clip 1",
                              "clipname2":"text for clip 2",
                              "clipname3":"text for clip 3",
and then jsut use sometihing like this
var txt:String = MovieClip(parent).oTexts[this.name];
etc. ..

Array of Object Refs

I am doing exercises in a book (a couple books) to learn Java. I am a procedural pgmr and want to learn Java.
Question 3 in Chapter 4 says:
Create an array of object references of the class you created in Exercise 2, but don't actually create objects to assign into the array. When you run the program, notice whether the initialization messages from the constructor calls are printed.
In exercise 2, I created an created an overloaded constructor. There are two constructors one that takes an argument and one that doesn't. I think I understand that I am being asked to look to see the values of the variables before the object is actually created but after initialization.
My question is that I am not sure I understand what is being asked in question 3. I have to create an array of object references. I understand object references to be the varable names that hole the contents of the object. I don't understand what I am supposed to put into each (the two) elements of the array.
Here is program written for exercise 2:
//: c04:J402.java
/* This has overloaded constructors. However, the argument must be given. Without it, there is an exception at runtime. */
class Bird {
Bird() {
System.out.println("The object is an egg");
Bird(String age) {
System.out.println("The object is " + age + " months old");
public class J402 {
public static void main(String[] args) {
String age = args[0];
new Bird(age);
} ///:~
Thank you so much for any help.

My question is that I am not sure I understand what is
being asked in question 3. I have to create an array
of object references. I understand object references
to be the varable names that hole the contents of the
object. I don't understand what I am supposed to put
into each (the two) elements of the array.
You need to make three different concepts clear to yourself: objects, object references, and reference variables.
Objects are objects are objects. They are self contained entities that live somewhere in the memory. But, as you can't manipulate the memory directly (there are many good reasons for that), you can't manipulate objects directly.
To get to objects you need references (or pointers). A reference is like a memory address. It normally points to the memory location of an object, but if the reference can also be a special 'null' reference that doesn't point to any object (or to every possible object, depending on how you want to look at it). The JVM takes care of talking to the underlaying object through the reference.
An object can have many references pointing to it but a reference can point to only one object (or no / any object in the case of a null reference).
Reference variables, then, are the ones you have in source code. Here's an example of a reference variable:Bird tweety;
tweety = new Bird("I thought I saw a pussy cat!");(given a hypotetical class that can take a String object as an argument to the constructor)
"tweety" is a reference variable. A reference variable is a variable that can hold a reference -- surprise! :). If not set to any particular reference, it's value may be null. If you now do something likeBird bird2 = tweety;
tweety = new Bird();you first define a new ref. variable "bird2" and set its value to tweety's ref. Then you reset the var. tweety to point to a new Bird object. What happens to bird2? Nothing!! ... but if instead of "tweety = new Bird();" you had written "tweety.setChirp("TWEET!!!");" and then called bird2.chirp(), it would have chirped with "TWEET!!!" because the references of bird2 and tweety point to the same object.
But, you can have references outside reference variables. In reference arrays (or "object arrays", the terminology can be confusing), for instance. Then, the codeBird[] flock = new Bird[2];0) Creates, allocates and initializes a new reference array object.
1) Creates a new reference variable called "flock" and assigns it to a reference that points to the object that was created in 0).
2) Creates 2 more references to Bird objects, initially set to null. No further objects are created. These references can be used like reference variables through flock[0] and flock[1].
(not necessarily in this order)
Now this should answer the excersise 3. The references of flock[0] and flock[1] are left as null and they don't point to any objects - They will only if you do something like "flock[0] = new Bird("chirp!");" or "flock[1] = tweety;"

Calling a Procedure which has Array of Objects as arguments (from BPEL)

Hi,
I wanted to pass multiple records as arguments to a stored procedure from BPEL.
We created stored procedure which takes array of Objects as arguments. I invoked it from BPEL. It was successfully compiled and deployed.
At runtime it is throwing following error.
<bindingFault xmlns="http://schemas.oracle.com/bpel/extension">
<part name="code">
<code>17072</code>
</part>
<part name="summary">
<summary>Error binding the value of a parameter. An error occurred when binding the value of parameter ARG in the SCOTT.TESTPACK.TESTPROC API. Cause: java.sql.SQLException: Inserted value too large for column: "sadfsafsad" Check to ensure that the parameter is a valid IN or IN/OUT parameter of the API. Contact oracle support if error is not fixable.</summary>
</part>
<part name="detail">
<detail>Inserted value too large for column: "sadfsafsad"</detail>
</part>
</bindingFault>

I think you from Sierra Atlantic and you using Beta 3. There was a bug in Beta 3 in using arrays, which got fixed in post Beta3. You got to wait till next release.

Placing an array of objects onto stage

I am trying to place an array of objects onto a stage where they drop vertically. I have been able to do it by placing the array objects into an object called "bag" but have found that the bag object only contains the last array object id so I can not apply actions to various array objects.
Also my objects do not loop and only appear once.
Below is the code so far.
var tempArray:Array = new Array(); // Stores randomised values
var bagArray:Array = new Array("gslow_id","gshigh_id","glow_id","ghigh_id","gdiv_id",
"gcall_id","gbust_id","gbull_id","gboom_id","gbear_id"); // List of bag names
function createBags() {
if (tempArray.length == 0) { // check if array is empty
     for (var i:Number = 0; i < targets; i++) { // for loop - creat variable bagName to the value of targets
     var bagName: String = bagArray[i];
     var depthLevel:Number = this.getNextHighestDepth();
     // attach movies to time line
     this.attachMovie(bagName, bagName, depthLevel, {_x:random(350) + 100, _y:random(0) + spacing});
     spacing += 45;
     tempArray.push(bagName);
     //trace(tempArray);
     bag = _root[bagName]; // create a bag object contain the bagName variable
     //trace (bag);
     bag.onEnterFrame = function() {
          if (this._x < 570 && this._y > 0) {
          this._y += speed * random(8);
          } else {
          this._x = random(500);
          } // end if (this._x < 570 && this._y > 0)
     } // end bag.onEnterFrame ()
bag.onPress = function() {
// if bag is pressed select action
//trace (bag);
xPos = this._x
yPos = this._y
unloadMovie(this);
score += 1000
scoreText_txt.text = score;
//trace(score);
checkScore();
} // end bag.onPress ()
//trace(targets);
//trace(bagName);
} // end for (var i:Number = 0; i < targets; i++)
} // end if (tempArray.length == 0)
} // End createBags()

try:
var bagA:Array=[];
var bagArray:Array = new Array("gslow_id","gshigh_id","glow_id","ghigh_id","gdiv_id",
"gcall_id","gbust_id","gbull_id","gboom_id","gbear_id"); // List of bag names
function createBags() {
if (tempArray.length == 0) { // check if array is empty
     for (var i:Number = 0; i < targets; i++) { // for loop - creat variable bagName to the value of targets
     var bagName: String = bagArray[i];
     var depthLevel:Number = this.getNextHighestDepth();
     // attach movies to time line
     var bag:MovieClip = this.attachMovie(bagName, bagName, depthLevel, {_x:random(350) + 100, _y:random(0) + spacing});
bagA.push(bag);
     spacing += 45;
     //trace (bag);
     bag.onEnterFrame = function() {
          if (this._x < 570 && this._y > 0) {
          this._y += speed * random(8);
          } else {
          this._x = random(500);
          } // end if (this._x < 570 && this._y > 0)
     } // end bag.onEnterFrame ()
bag.onPress = function() {
// if bag is pressed select action
//trace (bag);
xPos = this._x
yPos = this._y
unloadMovie(this);
score += 1000
scoreText_txt.text = score;
//trace(score);
checkScore();
} // end bag.onPress ()
//trace(targets);
//trace(bagName);
} // end for (var i:Number = 0; i < targets; i++)
} // end if (tempArray.length == 0)
} // End createBags()

How to list an array of objects using struts in jsp and ActionForm

I am using the struts ActionForm and need to know how to display an Array of objects. I am assuming it would look like this in the ActionForm:
private AddRmvParts addRmv[];
But I am not sure how the getter and setter in the ActionForm should look. Should it be a Collection or an Iterator?
I am thinking I need to use an iterator in the jsp page to display it.
I am also wondering if the AddRmvParts class I have can be the same class that gets populated by the retrieval of data from the database. This class has 10 fields that need to display on the jsp page in 1 row and then multiple rows of these 10 fields.
Thanks.

Most probably the easiest way to make it accessible in your page is as a collection.
ie
public Collection getAddRmvParts()
You can use the <logic:iterate> or a <c:forEach>(JSTL) tag to loop through the collection
As long as the individual items in the collection provide get/set methods you can access them with the dot syntax:
Example using JSTL:
<c:forEach var="addRmvPart" items="${addRmvParts}">
<c:out value="${addRmvPart.id} ${addRmvPart.name} ${addRmvPart.description}"/>
</c:forEach>

Printing a listing from an array of objects

I know I'm missing something simple here but for the life of me I can't spot it. The code below should print a list of student names to the screen. At the moment it only prints the last name entered into the array. I will kick myself when I see the answer but can anyone suss this out ? Many thanks for any help.
// A Program called StudentDetails3.java which inserts student names into an array according to
// a calculated hash Index and then prints out the name list in this order
import javax.swing.JOptionPane;
public class StudentDetails3
// Member Section
// Private members
private static String studentName;
// Public members
public static String input = JOptionPane.showInputDialog(" Please enter the number of students in the class : - ");
public static int maxNum = Integer.parseInt(input);
public static int hashIndex = 0;
// Constructor Section
StudentDetails3 ( String newStudentName )
studentName = newStudentName.toUpperCase();
// Method Section
public int hashCalc()
int total = 0;
for( int charNo = 0; charNo < studentName.length(); charNo ++ )
char letter = studentName.charAt(charNo);
int asciiVal = letter;
     if( studentName.charAt(charNo) ==' ')
     asciiVal = 0;
     total = total + asciiVal;
hashIndex = total % maxNum;
return hashIndex;
public void output()
System.out.println(" The student's name and hash index is " + studentName + " " + hashIndex );
static class DetailsStorage
// Member Section containing the array into which the student objects will be inserted
private Object [] array;
private int current;
// Constructor
DetailsStorage ( int noOfStudents )
array = new Object[ noOfStudents ];
current = 0;
// Method for adding name to array
public void add ( Object StudentDetails3 )
{ if ( array [ hashIndex] == null )
array [ hashIndex ] = StudentDetails3;
else if ( (hashIndex + 1) <= (array.length-1) )
do
{ hashIndex = ( hashIndex + 1 );
     if ( array [ hashIndex ] == null )
     {   array [ hashIndex ] = StudentDetails3;
     break;
} while ( (hashIndex + 1) <= (array.length-1) );
     else
          for ( int firstLp = 0; firstLp < array.length; firstLp ++ )
     if ( array [ firstLp ] == null )
     {   array [ firstLp ] = StudentDetails3;
               break;
public void printOut ( )
{   int loop = 0;
System.out.println ( " Name\t\tCourse " );
System.out.println ( "____\t\t_________ " );
     for ( loop = 0; loop < array.length; loop ++ )
     System.out.println ( ( ( StudentDetails3 ) array [ loop ] ).studentName );
// Main Program for testing
public static void main( String[] args )
{   String name;
// Obtain list of names from the user
DetailsStorage nameList = new DetailsStorage( maxNum );
for( int lp = 0; lp < maxNum; lp++ )
{   name = JOptionPane.showInputDialog(" Please enter the name of student in full ( e.g. Gareth Edwards )");
StudentDetails3 newDetails = new StudentDetails3( name );
newDetails.hashCalc();
     nameList.add ( newDetails );
newDetails.output();
nameList.printOut();
System.exit(0);
}

You've made the student name a static field, which means that there's only one for the whole class.
So the last one you input is the one you use for everybody.

Passing an array of objects to a method.

Hi I'm building a program to act as a CD Collection Database. An array of objects represents the entries: Artist, Album and NUmber of Tracks. What I want to do is in the Menu, user to choose wether he or she wants to Add new CD to collection, print or quit, if he/she does then I call a method addNewEntry, to which i pass the array of objects called array, and I want the user to enter the entries each in turn, after that i want the program to return to the method Menu and ask if he or she wants to quit, print or add new cd. The idea is that the details entered already would be contained in the array of objects [0], so the next set of details go to [1] and then to [2] and so on. I have build up the code at this stage but i get an error while copmiling and im totally stuck. Im a beginner in Java.
Here is the code:
//by Andrei Souchinski
//Mini Project: CD Collection Database
//Designed for a grade F
//Defining new class of objects to represent CD database entries.
//A database entry consists of the artist name, the album name and number of tracks.
//A single entry can be entered by the user typing the details in and the entry can be printed out.
import javax.swing.*;
import java.util.*;
public class MiniProject
     public static void main (String[] args)
          System.out.println("\tCD Collection Database\n");
          System.out.println("1. Add new Compact Disk to the Database");
          System.out.println("2. Print out current database entries");
          System.out.println("3. Quit\n");
          theMenu();
     public static void theMenu()
          CompactDisk [] array = new CompactDisk[20];
          String menu;
          menu = JOptionPane.showInputDialog("What would you like to do?");
          if (menu.equals ("3"))
               JOptionPane.showMessageDialog(null, "Thank You For Using our Service! \nGoodbye!");
               System.exit(0);
          if (menu.equals ("2"))
          if (menu.equals ("1"))
          addNewEntry(array);
          else
               JOptionPane.showMessageDialog(null, "Please select your choice form the menu");
               theMenu();
     public int addNewEntry(int newcd[])
               int i;
               newcd[i] = (JOptionPane.showInputDialog("Please enter the name of the Artist"));
               newcd[i] = (JOptionPane.showInputDialog("Please enter the name of the Album"));
               newcd[i] = (Integer.parseInt (JOptionPane.showInputDialog("Please enter the number of tracks on this album")));
//A Compact Disk entry consists of three attributes: artist name, album and number of tracks
class CompactDisk
     public String artistname; //Instance variables for artistname, albumname and numberoftracks.
     public String albumname;
     public int numberoftracks;
     public CompactDisk(String n, String a, int t)
     artistname = n; //Stores the 1st argument passed after "new Dates" into day
     albumname = a; //Stores the 2nd argument passed after "new Dates" into month
     numberoftracks = t; //Stores the 3rd argument passed after "new Dates" into year
     //When called from the main method, prints the contents of
     //artistname, albumname and numberoftracks on to the screen.
     public void printCompactDisk ()
               String output = "\n " + artistname + "\n " + albumname + "\n " + numberoftracks;
               System.out.println(output);
}

//by Andrei Souchinski
//Mini Project: CD Collection Database
//Designed for a grade F
//Defining new class of objects to represent CD database entries.
//A database entry consists of the artist name, the album name and number of tracks.
//A single entry can be entered by the user typing the details in and the entry can be printed out.
import javax.swing.*;
import java.util.*;
public class MiniProject
     public static void main (String[] args)
          System.out.println("\tCD Collection Database\n");
          System.out.println("1. Add new Compact Disk to the Database");
          System.out.println("2. Print out current database entries");
          System.out.println("3. Quit\n");
          theMenu();
     public static void theMenu()
          String menu;
          menu = JOptionPane.showInputDialog("What would you like to do?");
          if (menu.equals ("3"))
               JOptionPane.showMessageDialog(null, "Thank You For Using our Service! \nGoodbye!");
               System.exit(0);
          if (menu.equals ("2"))
          if (menu.equals ("1"))
          addNewEntry();
          else
               JOptionPane.showMessageDialog(null, "Please select your choice form the menu");
               theMenu();
     public static void addNewEntry()
               CompactDisk [] array = new CompactDisk[20];
               int i = 0;
               array.artistname = (JOptionPane.showInputDialog("Please enter the name of the Artist"));
               array[i].albumname = (JOptionPane.showInputDialog("Please enter the name of the Album"));
               array[i].numberoftracks = (Integer.parseInt (JOptionPane.showInputDialog("Please enter the number of tracks on this album")));
//A Compact Disk entry consists of three attributes: artist name, album and number of tracks
class CompactDisk
     public String artistname; //Instance variables for artistname, albumname and numberoftracks.
     public String albumname;
     public int numberoftracks;
     public CompactDisk(String n, String a, int t)
     artistname = n; //Stores the 1st argument passed after "new Dates" into day
     albumname = a; //Stores the 2nd argument passed after "new Dates" into month
     numberoftracks = t; //Stores the 3rd argument passed after "new Dates" into year
     //When called from the main method, prints the contents of
     //artistname, albumname and numberoftracks on to the screen.
     public void printCompactDisk ()
               String output = "\n " + artistname + "\n " + albumname + "\n " + numberoftracks;
               System.out.println(output);
I've edited the code, itcompiles, but gives an error when i ran it..:(

Determining which method to call from an array of Objects

Hi All,
Lets suppose I have an interface, a string method name, and an array of Objects indicating the parameters which should be passed to the method.
What Im trying to work out is a way to quickly determine which method should be invoked.
I can see that Class has getDeclaredMethod(String, Class[]), but that wont help me as I dont know the formal class types (the method may take X, but I might get passed Y which extends X in the array of objects).
Does anyone know of a quick way I can determine this?
All I can think of at the moment is going thru each method of the class one by one, and seeing if the arg is assignable, then, after getting all my matched methods, determining if there are any more 'specific' matches.
Any ideas?
Much appreciated,
Dave

you might want to take a look at the dynamic proxy apiCheers for the suggestion, but Im actually already using the dynamic proxy API.
What I have is a MockObjectValidator which allows mock objects to be configuered with expected calls, exceptions to throw etc etc.
I thought developers on my project would get tired using an interface like this:
myValidator.setExpectedCall("someMethod", new Class[] { typeA, typeB }, new Object[] { valueA, valueB} );
I.e, I wanted to cut out having to pass the class array, so they could just use:
myValidator.setExpectedCall("someMethod", new Object[] { valueA, valueB} );
The problem there is that I then need to pick the best Method from the class given the object arguments.
When the mock object is in use, its no problem as the InvocationHandler interface provides the Method. The problem I have is selecting what method a user is talking about from an array of Objects.
Ive written a simple one now, it just does primitive type class -> wrapper substitution, and then finds ** A ** match. If there is more than one match (ie, all params are assignable to a class' method params), I dont let that method be used.
Shortly I'll update it to actually make the correct selection in those cases.
cheers
Dave

Reading an Array of Objects from a .bin file!

Hey, at the moment I'm creating a program whereby I write a set of objects onto a bin file, in this case an array of objects with a String name/county, and int population/area.... I'm not trying to read it back from the bin file and encountering trouble! I've managed to get it working using plain objects, however I want to be able to read in arrays of objects. The file itself compiles, however during running I get this error
java.lang.NullPointerException
at RecordFiles.CoastalRead.main(CoastalRead.java:33)
at RecordFiles.__SHELL16.run(__SHELL16.java:6)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at bluej.runtime.ExecServer$3.run(ExecServer.java:774)
Here is the program itself,
import java.io.*;
public class CoastalRead {
    public static void main(String[] args) {
        CoastalTowns towns[] = new CoastalTowns[50];
          towns[0] = new CoastalTowns();
          towns[1] = new CoastalTowns();
          towns[2] = new CoastalTowns();
          towns[3] = new CoastalTowns();
          towns[4] = new CoastalTowns();
          String name, county;
          int population, area;
        try {
            FileInputStream fileIn =
                    new FileInputStream("CoastalTownsBin.bin");
            ObjectInputStream in = new ObjectInputStream(fileIn);
            for (int i = 0; i < towns.length; i++){
             towns[i] =(CoastalTowns) in.readObject();
               System.out.println("Deserialized File...");
                   System.out.println("Name: " + towns.name);
          System.out.println("County: " + towns[i].county);
     System.out.println("Population: " + towns[i].population);
          System.out.println("Area: " + towns[i].area);
in.close();
fileIn.close();
} catch (IOException i) {}
catch (ClassNotFoundException c) {}
+I'd appreciate a fast reply!+ And if someone needs the writing class I've used, I can post it asap.

CoastalTowns towns[] = new CoastalTowns[50];
towns[0] = new CoastalTowns();
towns[1] = new CoastalTowns();
towns[2] = new CoastalTowns();
towns[3] = new CoastalTowns();
towns[4] = new CoastalTowns();Why create an array with a size of 50 and then only fill 5 elements?
Why bother filling any elements at all when you are reading the objects from a file?
What happens if there are less than 50 objects in your file?
I will assume CoastalTowns holds info about a single town, so why is it pluralised? Do you have a class called Dog or Dogs, Chair or Chairs, Person or People?
} catch (IOException i) {}
catch (ClassNotFoundException c) {}DO NOT swallow exceptions. At the very least put in a call to printStackTrace so you know if/when an exception occurs.
I'd appreciate a fast reply!I typed as fast as I could but unfortunately I'm still and hunt and peck guy.

Formatted .data file, reading in and creating an array of objects from data

Hi there, I have written a text file with the following format;
List of random personal data: length 100
1 : Atg : Age 27 : Income 70000
2 : Dho : Age 57 : Income 110000
3 : Lid : Age 40 : Income 460000
4 : Wgeecnce : Age 43 : Income 370000
and so on.
These three pieces of data, Name,Age and Income were all generated randomly to be stored in an array of objects of class Person.
Now what I must do is , read in this very file and re-create the array of objects that they were initially written from.
I'm totally lost on how to go about doing this, I have only been learning java for the last month so anyone that can lend me a hand, that would be superb!
Cheers!

Looking at you other thread, you are able to create the code needed - so what's the problem?
Here's an (not the only) approach:
Create an array of the necessary length to hold the 3 variables, or, if you don't know the length of the file, create a class to contain the data. Then create an ArrayList to hold an instance of the class..
Use the Scanner class to read and parse the file contents into the appropriate variables.
Add each variable to either the array, or to an instance of the class and add that instance to the arraylist.

How to update an object property located in an array of objects

Hello all,
I have a script that creates custom objects and populates them and saves them into an array. This array of objects is later converted to a CSV file for reuse later on. On a subsequent need to run the script and to save time and avoid recollecting
data I have previously amassed, I read in the contents of the csv file and put this data into an arryOfObjects.
I need to manipulate the data in specific objects but I can't figure out how to accomplish that task.
I can identify the correct object within the array with the following command. I have been trying to pipe that result into either set-variable or set-itemproperty without success.
$arrayOfObjects | select-object | where HostName -like $_.'name'
This works, I can see my desired object and the data fields contained within it.
I now need to modify one of the property fields. (Alias).
I have been trying the following as a line of thought, but so far without success. It doesn't fail/error out, but it doesn't update the data either.
$arrayOfObjects | select-object | where HostName -like $_.'name' | set-itemproperty -name Alias -value "newAlias"
I'm wondering if I need to specify something for the -path argument, but since the array is in memory and not a registry location or a file I am not sure what I should use, if this is the problem at all.
Any suggestions would be appreciated.
Thanks
Smitty

yes, I have redacted things, and obscured other things because I can not go around posting critical infrastructure information out on the internet.
Here is the first three lines of my .csv file
"OrigIP","AL_HostName","AL_Found","AL_Enabled","AL_Status","N_HostName","InREDACTED","N_Found","Delta","IsStale","Ping","InDNS","InAD","Location","Alias","IsServer","HostType","OS","ApplianceName","FQDN","ChatterValue"
"10.24.11.4","ABCD","yes","yes","never","abcd.domain.com","yes","yes","*","*","Y","Y","N","TEST","*","*","eventlog","","","ABCD.DOMAIN.COM","*"
"10.24.12.18","EFGH","yes","yes","Dec 30 2014 09:15:00","efgh.domain.com","yes","yes","-25","No","Y","Y","Y","TEST","*","yes","eventlog","xxxxxx","","EFGH.DOMAIN.COM","*"
When I import this file I create a new custom object (objectCurrent) which I populate with the data from the csv file. I then store this object into an array of objects (objectCollection).
All of the data is present.
I then read in a new csv file that would contain most of the same hosts, but possibly additional new ones. upon importing the second csv file I loop through the entries.
I have a conditional statement that checks to see if the host name from the second csv file, if it isn't then treat it like a new object and go fill in all of the details of the object using my various functions, etc.
Import-CSV$currentALReport-Delimiter","|ForEach-Object
     if($objectCollection.N_HostName
-notcontains$_.'name')
        # then create a new currentObject and go populate the properties of the object
     elseif ($objectCollection.N_HostName -contains $_.'name') {
          # copy this object and update the object's AL_Status (which is the last reported message date info)
              # send that to the function that will parse it, compare Julian dates and see if it falls within my
              # criteria as being stale. if so set the IsStale property to Yes, but reguardless set the AL_Status
              # newest last reported message data
JRV states that "The "select object" does nothing at all unless you have a column in your CSV called "object". The where clause will do nothing because it is syntatctically wrong and illogical. "
I beg to differ. Using the above command :   with the script running and the current focus ($_.'name') equals "abcd.domain.com"
$arrayOfObjects | select-object | where N_HostName -like $_.'name'
It obtain a single object within my array of objects similar to this:
IP: 1.2.3.4
N_HostName: abcd.domain.com
IsStale: No
LastMsgDate: Dec 30 2014 09:15:00
Delta: 1
Ping: Yes
InDNS: Yes
InAD: Yes
Alias: *
(other fields omitted for brevity) I could get any of my existing objects if I match the hostname
If I used only the command "  $objectCollection | Select-Object "   it returns every object in my array.
So to narrow down the selection to a single object I add the " | where N_HostName -like $_.'name' "
which gives me the exact object I am searching for.
My only question is how can I modify the contents of the object that I have specified within the array of object???

Sorting an array of objects by an attribute

I'm pretty new to java so don't laugh if you think my question is real easy!
I have an array of objects and I want to sort them according to an integer value stored in each object. Any help would be very much appreciated.
Thanks for looking!!

Perhaps an example would help:
public class Person {
private String name;
private int age;
public void setName(String name) { this.name = name; }
public void setAge(int age) { this.age = age; }
public String getName() { return name; }
public int getAge() { return age; }
=====
public class PersonAgeSorter implements Comparable {
public int compare(Object o1, Object o2) {
    Person p1 = (Person) o1;
    Person p2 = (Person) o2;
    Integer i1 = new Integer(p1.getAge());
    Integer i2 = new Integer(p2.getAge());
    return i1.compareTo(i2);
=====
public class PersonNameSorter implements Comparable {
public int compare(Object o1, Object o2) {
    Person p1 = (Person) o1;
    Person p2 = (Person) o2;
    String s1 = p1.getName();
    String s2 = p2.getName();
    return s1.compareTo(s2);
=====
import java.util.Arrays;
public class SortExample {
public static void main(String [] args) {
Person p1 = new Person();
Person p2 = new Person();
p1.setName("Tom");
p1.setAge(22);
p2.setName("Nancy");
p2.setAge(33);
Person [] people = new Person[2];
people[0] = p1;
people[1] = p2;
Arrays.sort(people, new PersonAgeSorter());
Arrays.sort(people, new PersonNameSorter());
}

How to Sort Array of Object

Hallo. I have an array of objects. Each object has id and name. How can i sort by name or by id??
Thx for all
Max

array.sortOn("name");

Array as object's name

Similar Messages

Maybe you are looking for