Problem with J2SE 5.0

I'm ADC student.
First and second developer release was good for me.
Install last J2SE 5.0 last day
Install is good, no error.
Go to Utility
Open /Java/J2SE 5.0 Folder
Open Java Preferences
Window is empty, gray, nothing.
Open Java Cache Viewer
Window is empty, gray, nothing
no problem with first and second release ?
Than'ks
(excuse me for my bad english)

Delete the folder and /Library/Receipts/J2SE50Release3.pkg. Then, reinstall, using the downloadable from http://www.apple.com/support/downloads/java2se50release3.html. Works on my system.

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       index.addElement(key);
       Object obj = super.put(key,value);
       System.out.println("inside OrderedHashTable Put method index size = " + index.size());
       return obj;
public synchronized Object remove(Object key){
       int indx = index.indexOf(key);
       index.removeElementAt(indx);
       Object obj = super.remove(key);
       return obj;
public synchronized Enumeration getOrderedEnumeration(){
       return index.elements();
public synchronized Object getByIndex(int indexValue){
       Object obj1 = index.elementAt(indexValue);
       Object obj2 = super.get(obj1);
       return obj2;
   public synchronized int indexOf(Object key){
    return index.indexOf(key);
    public synchronized int getIndexSize() {
        return index.size();
    }Everything seemed to work fine util I tried to add objects using a "for" loop such as this one :
private synchronized void testOrderedHashTable(){
        OrderedHashTable test = new OrderedHashTable();
        for (int i = 1 ; i<15; i++){
             System.out.println("adding Object No " + i);
             String s = new String("string number = "+i);
             test.put(new Integer(i),s);
             System.out.println("-----------------------------------");
        //try to list the objects
        Enumeration e = test.getOrderedEnumeration();
        while (e.hasMoreElements()){
            Integer intObj = (Integer) e.nextElement();
            System.out.println("nextObject Number = "+ intObj);
    }Here is the console output :
Generic/JSR179: adding Object No 1
Generic/JSR179: inside OrderedHashTable Put method index size = 1
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 2
Generic/JSR179: inside OrderedHashTable Put method index size = 2
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 3
Generic/JSR179: inside OrderedHashTable Put method index size = 3
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 4
Generic/JSR179: inside OrderedHashTable Put method index size = 4
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 5
Generic/JSR179: inside OrderedHashTable Put method index size = 5
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 6
Generic/JSR179: inside OrderedHashTable Put method index size = 6
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 7
Generic/JSR179: inside OrderedHashTable Put method index size = 7
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 8
Generic/JSR179: inside OrderedHashTable Put method index size = 8
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 9
Generic/JSR179: inside OrderedHashTable Put method index size = 10
Generic/JSR179: inside OrderedHashTable Put method index size = 10
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 10
Generic/JSR179: inside OrderedHashTable Put method index size = 11
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 11
Generic/JSR179: inside OrderedHashTable Put method index size = 12
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 12
Generic/JSR179: inside OrderedHashTable Put method index size = 13
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 13
Generic/JSR179: inside OrderedHashTable Put method index size = 14
Generic/JSR179: -----------------------------------
Generic/JSR179: adding Object No 14
Generic/JSR179: inside OrderedHashTable Put method index size = 15
Generic/JSR179: -----------------------------------
Generic/JSR179: nextObject Number = 1
Generic/JSR179: nextObject Number = 2
Generic/JSR179: nextObject Number = 3
Generic/JSR179: nextObject Number = 4
Generic/JSR179: nextObject Number = 5
Generic/JSR179: nextObject Number = 6
Generic/JSR179: nextObject Number = 7
Generic/JSR179: nextObject Number = 8
Generic/JSR179: nextObject Number = 9
Generic/JSR179: nextObject Number = 9
Generic/JSR179: nextObject Number = 10
Generic/JSR179: nextObject Number = 11
Generic/JSR179: nextObject Number = 12
Generic/JSR179: nextObject Number = 13
Generic/JSR179: nextObject Number = 14
You can notice that the output seems correct until the insertion of object 9.
At this point the vector size should be 9 and the output says it is 10 elements long ...
In the final check you can notice the 9 was inserted twice ...
I think the problem has something to do with the automatic resizing of the vector but I'm not really sure. Mybe the resizing is done in a separate thread and the new insertion occurs before the vector is resized ... this is my best guess ...
I also tested this in a pure J2SE evironment and I don't have the same strange behavior
Can anybody tell me what I am doing wrong or how I could avoid this problem ?
Thanks a lot !
Cheers Alex

Am i doing anything wrong?Uhm, yes. Read the API doc for addElement() and for addAll()

Problems with RandomAccessFile

Hello!
I have a problem with reading data from file which was written with RandomAccessFile
I write data with writeChars() method and then try to read what i wrote with readLine() method.
But if i wrote ie 3333
when i read it i have *3*3*3*3
* = looks like small square ( it seems to me that it is just a free space)
Does anybody know why this happens?
Look please at this code with my explanations :
public static void main(String[] args){
   try{
        RandomAccessFile outputStream = new RandomAccessFile("a/new.data", "rw");
        outputStream.seek(0);
        outputStream.writeChars("3333" + "\n");
        outputStream.writeChars("test");
        outputStream.seek(0);
        String s = outputStream.readLine();
        String s1 = outputStream.readLine();
        System.out.println(s + " s");// here i receive instead 3333     *3*3*3*3 ( * is a small square)
        System.out.println(s1 + " s1" ); // the same thing
        outputStream.close();
    }catch(Exception exc){System.out.println("exception");}
}Thank you for any ideas.
Timur.

The funky characters you are seeing are bytes with value of 0 read by readString(), converted into Java chars.
Your problem is as follows: you write data with writeChars() which writes every character using writeChar() [which in turn writes every char as a 2-byte value, high byte first] but you read data using readLine() which uses read() in a loop. read() reads every single byte of data from the file and converts it into a 16-bit Java char.
Thus, you double the length of your "string" by inserting zeros (for an ASCII string) when you read it back in your code.
There are several ways to make sure you read back correct data:
- write it using writeBytes() -- but be aware that this will discard the high byte of every char and this is only good for ASCII etc [i.e. your code will not be Unicode-friendly]
- write the string using writeUTF() and read it via readUTF(). This will be Unicode-friendly but will not allow you to use readLine(). However, that method is documented as not being Unicode-firiendly, see
http://java.sun.com/j2se/1.3/docs/api/java/io/RandomAccessFile.html#readLine()
- do not use a RandomAccessFile at all. Instead, use a FileWriter to write your data and a BufferedReader wrapping a FileReader to read your data.
Vlad.

Still Having Problems With Applets!!!!

First i'd like to thank all who responded to my last post regarding a downloadable copy of the J2SE API Documentation. I have downloaded it and am quite content.
I am still, however having a problem with my applets (all applets at that). Like i said before. I can view any applets i want through the command prompt using appletviewer. My problem is residing in execution directly through Microsoft Internet Explorer 5.x.
When i open the .html file containing my applet, the file loads in the browser but the applet does nothing. When i mouseover the applet a message is displayed in the browser's status bar stating "loading class. classname: class not found".
I have tried every applet i can get my hands on including downloaded applets from applet resource sites (even the example applets that came with the JDK1.4 when i downloaded it). They all react the same way, but will execute fine with the direct command prompt reference to appletviewer.
It's getting very irritating. I have tries everything including setting the classpath in the command prompt. I'm loosing hope of a solution so if anyone might have an idea of what i need to do to fix my problem, or anything i am doing wrong or haven't done, please give me a hint or help.
I am loving the java language and wish to further my knowledge and farmiliarity with it but i need to make sure everything works.
Sorry for rambling and i thank whoever offers a reply in advance.
ChanceH

1. Check the codebase parameter in the html file that calls the applet
for example if you have an applet named MyApplet.class inside a directory applets and your html file outside that directory you should have a codebase like this "applets/".
<applet CODE="MyApplet.class" codebase="applets/" WIDTH=640
HEIGHT=480 ALIGN= center>
</applet>
2. Be sure that your IE support java check the properties and enable the JVM.
3. If your JVM version does not support Java 2, applets build on Java 2 will not work.

Problem with J2SE 5.0

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