Java Forum

in the java code : byte aPictArrayUnpacked = new byte ; in the c++ code : JNIEXPORT void JNICALL Java_tracker_UnpackPict ( JNIEnv * aEnv , jobject aObj , jbyteArray aPictArrayUnpacked ) { jbyte * lBodyUnpacked = aEnv -> GetByteArrayElements (

in the java code : byte aPictArrayUnpacked = new byte ; in the c++ code : JNIEXPORT void JNICALL Java_tracker_UnpackPict ( JNIEnv * aEnv , jobject aObj , jbyteArray aPictArrayUnpacked )

Hi, I have a question on file writing. I am not very experienced in Java programming. My hobby right now is to write an applet where 2 persons could play Go together (it is a board game). The offline interface is done but I was wondering how to send information between the two players. Since I am not very experienced in Java and I am just a...

Hi, im about to start learning how to program in JAVA 2 and was wondering what software i should buy to learn the language. I have downloaded the software development kit 1.4 but find the DOS based interface very difficult to use as i am from the GUI age and hate DOS. I have heard that Borland J Builder is the best development enviornment, i...

Trying to figure out how to use the following program to zip up files in another directory other than current "." Using current works fine, I substitute it with a path "c:\\stuff" I get the following run-time error: Adding: file1.txt java.io.FileNotFoundException: file1.txt (The system cannot find the file specified)

i've recently started using Scripting to launch java in windows in a fairly crude way and am wondering if there are any other suggestions on ways to do it without buying anything and not JAR either..... currently i place a shortcut point to a file (say X.wsf) that is in the same directory as my class to launch and use scripting to open a...

Hi all, I'm looking for an on line Java tutorial that covers recent J2EE releases. Any suggestions?

Hi, I know how to do an action listener with a button but now I want to try something a bit harder. This is what I want to do... When you user presses the JButton it looks at the JComboBox to see if it is selected. If it is, a sound is played. If it isn't, nothing happens. I'm not sure how to do this so if someone could give me a simple...

Anyone have any experience with inexpensive development environments for Mac OS X? I am a dabbler, not a pro, so I don't need an "Enterprise" version of anything. Thanks, Rich

Please help, I am learning java and have been stuck with this problem. I have been trying to figure it out on my own, but I am getting nowhere. The problem is this; I need to create a class named shirt with three data fields. I need a constructor that will take arguments for the sleeve and collar fields.I need to be able to use this to...

I need a java english dictionary api, and it needs the following features, in order of importance: To verify given words (duh). To select a random word based on length. To rearrange a collection of letters into meaningful words, eg given not, producing not, ton, and maybe even no, on, and to.

In JavaME gibt es ja keinen Befehl, um eine Textdatei zeilenweise (readLine) einzulesen. Wie kann ich dies anders lösen? Ich habe schon probiert mit readUTF immer 40 char einzulesen und zu gucken, ob ein Zeilenumbruch darin vorkommt, wenn n icht wieder 40 u.s.w. Aber das hat alles nicht so wirklich funktioniert. Gibt es da schon einen...

Hello I was running the Image Browser example (from the JAI book by Lawrence Rodrigues) with a very large image, specifically one of the size 12,000 x 6,000 pixels, and the image does not render inside the view port when using the original size display mode, the image appears to be loaded in memory, and the application appears to be...

I wanted to make a Java application which would dial a telephone number using the modem. When the person on the other end lifts up the telephone (answers the phone), the application should start playing an audio file(eg. .wav file). The approach I took was using the Java Communications API(javax.comm.). As my modem is connected to the...

I am using the following code in a servlet to send data back to a J2ME application:

Hi, Learning Java, want to play with XML. I have a text file that looks like this. # PER 2:04 AM 06/09/2003 # plotfile for a circle of radius 5 # at the origin but rotated 25 degrees about the y axis # y is up, x is to the right, z is away from you 721 4.53154, 0.00000, -2.11309

Well, not exactly, bu tclose to that. I whish to call a method that has, say, String as an argument. Now, i haven't been in touch with Java in a while so i don't remember the syntax. When i go: object.method (new String ); the compiler naggs about missing "]". How do i create an array without explicitly assigning a variable name to it?

I have an application that works perfectly... and at one point loads a class that is in a jar file listed in my $CLASSPATH. If I jar the application and create the appropriate manifest to run it, it starts working fine until it gets to the spot where it loads the class (Class.forName()), and then it gives me a ClassNotFound exception. My...

I am trying to return an array of strings (basicaly the contents of the textfield) to the main class... when i put this piece of code it tells me that i need to declare the array of strings final but if i do then they don't change in the action listener. any suggestions on how to make this work? public String drawLoginPopUp( ) {

This may not be the correct place to post this; however, please bear with me. Platform: Solaris 9 iPlanet Web Server Java Servlets/JSP website I have a servlet that displays the contents of a directory as links available for downloading/viewing. I have also locked this directory down using LDAP through the web administration page of...

Hi all, i got a few questions about transforming into pdf format. i found fop on web and i made all these examples. but for all examples you have to have files. my problem is that i have to generate document object (i made it with jdom). then i transform it in String. now i'd like to transform that String into pdf file. Is it possible? i...

Hello, I need to view EMF (or WMF) file in the applet. Also some '+' and '-' buttons will be provided and actions on theese buttons will magnifying and minifying. Is there some possibility for this or not? Thanks.

Hello, i am relatively new to programming, Java being the first language im learning. At the moment im having trouble changing the setEnable value of a button, relative to the state of a JTextArea, ie setEnable(false) if the JTextArea is empty, and once somthing IS typed into the TextArea the button is Enabled, i cant find any listeners for...

Hello, I'm trying to find a way to flexibly filter a column in a row of data read from a file. I will have data type of that column, the operation to be performed on it (like >, <, <= etc.) and the value to compare it to stored in a database. If I'm to write it in a procedural language it would be a big case statement like this: case int...

Hi, what effect will it have on my java process if I use a) -J-mx80m option when I compile it. b) run the program with -Xmx256m option. c) if I use both, what happens i.e. of the setting is the max of the heapsize 80 or 256. Thanks, Patrik