Question about Java SE Source Code

I was wondering, what is Java SE written in? Can't be Java right? Since thats like the chicken and the egg. Can't write in Java unless you have a platform to interpret Java code into byte code, but if the platform is written in Java... what is interpreting the platform? The platform can't interpret itself right?
Little confused about it ^, I didn't post in the thread about open source Java since everyones just fighting on there about how old or new the news is. To tell ya the truth, I heard about it yesterday but didn't expect it so soon. Its nice that its here, its now fully Linux friendly. :D
I might download the code and take a look at it if its written in Java.

I was wondering, what is Java SE written in? Can't be
Java right? Since thats like the chicken and the egg.
Can't write in Java unless you have a platform to
interpret Java code into byte code, but if the
platform is written in Java... what is interpreting
the platform? The platform can't interpret itself
right?
So you write the 0.0.1 compiler and runtime in something else.
Using that you create and compile a Java version that you call 0.0.2.
You now have a compiler written in Java that can compile Java.
The runtime is a bit more complex as it needs some platform specific bootstrapping code, but most of that can be written in Java as well.
And that's no theory, it's what actually happens (and not just with Java).
Not everything is Java, but a good chunk certainly is (or can be).

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When binding to an address and port number, the application can also specify an integer backlog parameter. This represents the maximum number of incoming TCP connections which the system will queue internally. [...]
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1- .netrc file is in $HOME directory but i can't
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Ok, thanks
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Hello,
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The code seems quite long, and wondered if anyone could advise if this is the best way to play a wav file?
And could anyone explain if the EXTERNAL_BUFFER_SIZE should allows be set to 128000;
Thank you
import java.io.File;
import java.io.IOException;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;
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                                                             audioFormat);
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I didnot go thru the code you posted but I know that the following workstry {
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        // At present, ALAW and ULAW encodings must be converted
        // to PCM_SIGNED before it can be played
        AudioFormat format = stream.getFormat();
        if (format.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
            format = new AudioFormat(
                    AudioFormat.Encoding.PCM_SIGNED,
                    format.getSampleRate(),
                    format.getSampleSizeInBits()*2,
                    format.getChannels(),
                    format.getFrameSize()*2,
                    format.getFrameRate(),
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        Clip clip = (Clip) AudioSystem.getLine(info);
        // This method does not return until the audio file is completely loaded
        clip.open(stream);
        // Start playing
        clip.start();
    } catch (MalformedURLException e) {
    } catch (IOException e) {
    } catch (LineUnavailableException e) {
    } catch (UnsupportedAudioFileException e) {
    }

Question about java 5.0 & j2me & wireless toolkit

Hi,
I maybe have a dumb question, but to me it's not totally clear. I am currently developing an application (for J2ME and J2SE) which uses RSA encryption. So I found out that before Java 5.0 RSA encryption wasn't supported, but starting from Java 5.0 it is. So my question now is. If I use the RSA encryption from Java 5.0, can I still use it in my cell phone? And which Java version runs in my cell phone?
It not clear to me, but maybe someone will be so nice to respond...
Can my/any cellphone run Java 5.0 code? So what if I use the mentioned RSA-cipher... or generics...enumerations... On what does it depend whether I can use it for my cell phone or not?
Does it just depend on the compiler? the JVM on my phone? or even the wireless toolkit?
Thank you very much in advance.
Sincerely.

bump...
anyone?

Question about Java Errors

I have some questions about some java errors
1. what kind of errors are contained in Error class?
2.does this class contain only runtime errors?
3. if the question number 2 is positive, what about InstantiationError which is a compile error and is a subclass of Error.
4.When our program is out of memory, which processes are done for an error to be produced. is the error actually from OS or VM?

I have some questions about some java errors
1. what kind of errors are contained in Error class?An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch.
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3. if the question number 2 is positive, what about
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Question about Java apps structure

Hello guys,
I'm a professional C++ programmer and I would like to start learning Java. I'm reading about Java from here and there and would like to ask you about how a java program is structured compared to C++.
So in C++, I have main.cpp (or any other file name, doesn't matter), which contains a the main() function, and I have .h and .cpp class files that I instantiate (basically) in my main function to get my program to work.
In Java, I'm confused and can't really find the "general" rule to how stuff are organised. I noticed that every class has a main function (why?), and there's no global scope. And "somehow", file names must exactly be equal to the class names.
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Thank you for any efforts :-)
Edited by: 927494 on 13.04.2012 07:02
Edited by: 927494 on 13.04.2012 09:10

Thank you guys for the replies. I still have some more doubts :-)
Do I have to have a file for the implementation and a file for the definitons, like cpp and header files? or just everything inside the class?
Why does Netbeans fail to compile when I change the class name? what should I change with the class name in general to have it compile correctly? From what I understand till now, the top level class's name (the class with the main() function that's gonna be executed) has to be equal to the file name (and I got that this is the sufficient condition for the app to compile), while the same file can have more classes if I wish. Did I get that right?
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Hello, I am working on a Java applet application and would like to choose a Java-based scalable server framework to use within my applcation. I have found a few like xsocket or QuickServer and have a question about other. And, also, which is the one You may advise? Yours sincerely, Slawek

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Client-
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(3) Say that my application is a single executable file like this,
class X{
public static void main(String[]$$$){
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At this point, say that my neighbor accepted the two executables, he executed the jre.exe and has jre6 in his system, now he double clicks on my X.jar ... it's a console application and jar files are not associated with the java.exe launcher since java 5, but with javaw which doesn't open any console ... how do i make it so a console opens and prints "Console, where are you?" ... do I ask my neighbor-customer to add a couple of lines to his path and open his console and (please) enter java -jar jarfile.jar? ... isn't it too much? ... i hope i'm wrong cause this is kind of discouraging
(4) I've read that by installing a more recent version of a jre on a system that has an older jre (there to help other applications work), I might be causing a problem for the other applications to run ... I guess that's the reason why that Readme kind of encourage to redistribute a "private" version of a jre (one that doesn't come with a java.exe launcher ... any feedback on this?
(5) I'm reading a lot of hype about Java Web Start ... it looks better than the traditional jar/jre deployment ... but setting up a MIME type to *.jnlp, it doesn't come with some free hosting I've checked ... somebody can recommend a free hosting service that allows to set a *.jnlp MIME? (I'll appreciate a suggestion here, cause I would like to test Web Start)... and, anyhow, how you people compare it with the paradigm of the single executable file?.
Thanks. Your feedback is highly appreciated.

jorgelbanda wrote:
..(5) I'm reading a lot of hype about Java Web Start ... It's gratifying to think that someone who wants to deploy apps., has the common sense to search first! You would not guess how I often I hear "I wanna' make an EXE" shortly followed by "What's webstart?".
...it looks better than the traditional jar/jre deployment ... but setting up a MIME type to .jnlp, it doesn't come with some free hosting I've checked ... OK. You cannot define new mime types, but perhaps the site already has it defined. An easy way to check is to upload 'any old file' that ends in .jnlp and use the [mime type checker|http://pscode.org/mime/] to see what content type it is served as.
..somebody can recommend a free hosting service that allows to set a .jnlp MIME? (I'll appreciate a suggestion here, cause I would like to test Web Start)... I'm pretty sure the Google based sites offer it.
Note that I edited the asterisks out of your post, to avoid the forum software parsing half the reply as bold.

Why are the Java Library source code classes not indented properly?

I have always admired the design of a lot of classes and frameworks in the JDK. I read the source code a lot to see how the developers coded a particular class, how they designed it and how they write the javadocs.
But one thing I observed was the improper indentation of the source code. Why is this so?

I have always admired the design of a lot of classes
and frameworks in the JDK. I read the source code a
lot to see how the developers coded a particular
class, how they designed it and how they write the
javadocs.
But one thing I observed was the improper indentation
of the source code. Why is this so?Repeating what was said above....do not look upon the Java API as an example of how to do anything, not for design, not for code implementations and not even for code structure.

Question about Java SE Source Code

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