compile « class file « Java I/O Q&A





1. Compiling ANTLRWorks generated class files    stackoverflow.com

I am using ANTLRWorks to create ANTLR grammars. I have a valid grammar and the parser and lexer source files are generated as well. I have also tried debugging the generated ...

2. Determine whether .class file was compiled with debug info?    stackoverflow.com

How can I determine for any Java .class file if that was compiled with debug info or not? How can I tell exactly what -g{source|lines|vars} option was used?

3. JavaCC: I wish to generate java classes from dymanicly generated jj files and to compile them at runtime    stackoverflow.com

I am refactoring a project which uses javaCC to create a proprietary language parser during compile time. Due to the fact that different variations of languages can exist at the same ...

4. Why does Java generate Multiple .class files on compilation?    stackoverflow.com

In Java, on compilation we get a .class file for each class( including nested classes and interfaces) defined in the source file.

What is the reason for this multiple .class file generation? ...

5. How does the java compiler find classes without header files?    stackoverflow.com

When we refer to a class className in jar, how does it know whether it's defined or not when there's no header files(like in c/c++) ?

6. Do your javadocs get compiled into your class files?    stackoverflow.com

When you compile your java files, does it also embed your javadocs and comments into the class file? For example, if you have large javadocs, does it effect the overall size of ...

7. How to invoke Rhino compiled JavaScript methods (class files) in the Java program?    stackoverflow.com

I compiled following JavaScript file, "test.js", into the "test.class" :

var test = (function () {
  var that = {};

  that.addNumbers = function (a, b) {
    return ...

8. Anyway to get compilation flags used in building a .class file?    stackoverflow.com

I have a bunch of .class files that I did not myself build. From these .class files, is it possible to know the various compilation flags used for building them? Things like... ...

9. How do I run Java .class files?    stackoverflow.com

I've compiled a HelloWorld program, and I'm using the command prompt to run it. The .class file is named HelloWorld2.class The file is located in C:\Users\Matt\workspace\HelloWorld2\bin Here's what I'm getting when I ...





10. Using Xcode 4.x to open .class (java compiled) files    stackoverflow.com

I used to use Xcode 3 to open compiled java files. It automatically decompiled it. This way, I was able to read the name of the methods that where available in ...

11. How to include existing code/class file when compiling in Java    stackoverflow.com

I am a complete newbie with Java. I use notepad++ to write Java code, and then compile and execute using command line on the Windows Platform How do I reuse existing code ...

12. Why am I getting a NoClassDefFoundError when I run a Java class file from the command line in Linux?    stackoverflow.com

I am trying to run a test.class file from the linux command line. I compiled the file using javac test.java which produced the test.class file. When I run the ...

13. Java compilation of a .java file without a public class    stackoverflow.com

Okay, so a java source file must have at least one public class and the file should be called "class-name.java". Fair enough. Hence, if I have a class, then the following would ...

14. Compile map reduce java file (containing main) with a class definition in a different java file    stackoverflow.com

I am trying to compile kmeans.java which uses a FloatArrayWritable class . I have defined this class in FloatArrayWritable.java:

public class FoatArrayWritable implements Writable {

    public ArrayWritable array;

  ...

15. How does byte[] get compiled in the class file?    coderanch.com

Hi, If I have a method which has a byte[] as its variable, public void f1() { byte[] matchBytes = {0x50, 0x4e, 0x47}; ... } like this, how does that compile into a class file? When I open the compiled class file, and search for '0x50' '0x4e' '0x47', nothing is found. And what if I have a class which has static ...

16. compile multiple class files    coderanch.com





18. Why does the class file compile in a different place    coderanch.com

Dear All, Sorry for posting a lot of questions lately but i still do not get it. I have a java file, but when i compile it it creates a folder then a it places the class file in it, unlike the normal compilations where the class file and the java file are in the same place. Another thing, when i ...

19. Trouble compiling .class file - Tried Sun's solutions    coderanch.com

Hi, all! I'm trying to compile from the command line for the first time. I can compile fine (ie., without an error message), but I don't see any nice HelloWorldApp.class file appearing in my directory. I understand this is a common issue. I've read the threads here and have implemented the steps at Sun's link: http://java.sun.com/javase/6/webnotes/install/jdk/install-windows.html#Environment. Still no luck... Any suggestions? ...

20. Swapping a .class file out for another compiled from command line...    coderanch.com

Okay. I've been wrestling this decompiled code to get this application to compile and run locally but the more errors I fix the more I uncover. Today it dawned on me I may or may not need to do this... The particular piece I have to update seems insular and for the sake of this question I'll assume it is and ...

21. Compiling two public scope java classes in a .java file    coderanch.com

Hi, If I have two default scope classes like(class Test{} and class Test2{}) in a file named it with Test.java or Test2.java, it will compile and why it is not compiling two classes(public class Test{} and public class Test2{}) in a file named it with Test.java or Test2.java, will not compile. Thankyou.

22. Compiling Code without a class file!    coderanch.com

hey Guys, first let me tell you the project details, Details - Its a very small project having 3 classes and certain number of jars in its class path in the batch file. now for the problem - Out of those 3 classes - I have the problematic situation in just one small method in a small class - Situation - ...

23. Compiling a file that has reference to a class contained in another UNCOMPILED file.    coderanch.com

Yes. If I hadn't, the compiler would not have been able to find A.java which is in the pkg folder. pkg has both A.java and B.java. The problem is that since A.java references class B and class B doesn't exist as of now, the compilation should have failed. But the compilation is successful and the file B.class gets created as a ...

24. More than one class in a file, compile one class - all get compiled    coderanch.com

But then there is more to this. Because if I have this source: public class MyFirstClass { public static void main(String[] args) { System.out.println("Hello World!"); } } And save it to a file called anything.java then if I javac anything.java I get error: javac anything.java anything.java:1: class MyFirstClass is public, should be declared in a file name d MyFirstClass.java public class ...

25. how to manipulate a .class file without complex compiling    java-forums.org

Guys, I desperately need help here. I am not familiar with Java at all. I am trying to customize a web interface of an IP-PBX application. There is a .class file that I need to modify to proceed with the customization but I have no idea how to do it. I only need to modify a line in the file and ...

26. Need help to compile java files to class    java-forums.org

Were there any errors? Where did you look for the .jar file? Copy the contents of the command prompt window for when you execute the jar command. To copy the contents of the command prompt window: Click on Icon in upper left corner Select Edit Select 'Select All' - The selection will show Click in upper left again Select Edit and ...

27. Class file is being deleted on compiling    forums.oracle.com

DatagramMessage one=new DatagramMessage("here",duke,9001); TCPclient.sendString("127.0.0.1", 9001); } catch (UnknownHostException ex) { System.err.println(ex); } ********************** the error i get is: Exception in thread "main" java.lang.NoClassDefFoundError: aston/net/DatagramMessage at TCPclient.main(TCPclient.java:81) /////////////////////////////////////////////////////////////////////////////////// the code for DataMessage is: package aston.net; import java.net.InetAddress; /** * A class to use with MyServerDatagramSocket for * returning a message and the sender's address * @author M. L. Liu */ public class ...

28. Failing to generate a class file on compiling....    forums.oracle.com

Calling all night owls, wonder if anyone would be kind enough to help me out here... I am a compleete newbie to java trying to teahc myself using online tutorials etc, would not claim to be an IT genius either but am not computer iliterate having studied elementary C++ at uni and am able to program complex PIC applictions, but I ...

29. Help Needed, Can't run java class files after I compile them    forums.oracle.com

Hello, I'm having a big problem with trying to learn java. After a long while of messing with stuff, I've finally got things to compile and make a .class file I'm just using the HelloWorldApp example from the tutorial. When I try java HelloWorldApp, I get the following: Error occurred during initialization of VM Unable to load native library: Can't find ...

30. How to create an .exe file of the compiled class    forums.oracle.com

JSmooth just doesn't fulfill your requirements. If you can use JSmooth, you can just as well skipping the native part because the system's able to run a JARed program just as well. If you really want to go without a JRE, either look at InstallAnywhere which blows your 150 kB app to 15 MB by attaching an "internal" JRE to the ...

32. How to compile java classes with libraries using a bat file?    forums.oracle.com

I am trying to compile my java files They are located under /src/HelloWorldApp/HelloWorld/Hello.java The Hello.java requires a hello.jar located in /lib folder to compile All the compiled classes must be stored the /classes folder What classpath should i set to? I am looking for relative paths and not absolute paths What must i put in the compile.bat file to make it ...

33. Applet external class files not included in compilation    forums.oracle.com

Hi folks, Im at my wits end here hopefully someone can help me. I am writing an applet using eclipse. I have to reference an external API to do some specific functionality. Everything compiles just fine , but when I look at the jar file the classes from the external API are not included so I get a "class not found ...

34. compile class file, check for code structure quality    forums.oracle.com

now i am trying to develop a system for my college final year project..the main function is to help the lecturer to mark the student java assignment any way to compile the java file..just to check for the error? if got error then 0 mark..no error got mark..and then check for the code structure and so...base on that ..to decide the ...

35. Compiling on a dual core machine and running the class files on linux.    forums.oracle.com

Have you tried it? What effect are you seeing that you feel may be because of this? In general, it should have no effect, that does not mean it will not in some extreme cases, but it definately should not, and I (personally) don't know of any instances where it has. I assume you are having some type of problem? If, ...

36. Compiling 1.4 class files with jdk 1.5    forums.oracle.com

Hello guys, is there some way to compile my source files to class-files for JRE 1.4 out of my JDK 1.5? When I've written a program, I always put it in JAR-Files. But I can't run these on machines with JRE 1.4! I would be very happy about a fast answer! Thanks

37. Compile java by another java and save the class file in a spec location.    forums.oracle.com

Hi, I want to compile a java program by another java program and save the resultant class file into a specific location. But I could get the class file in the same location where the main class exist. but i want the class file in some other location. I was tried like this, Runtime.getRuntime().exec("javac processInput.java /c c: test"); Please give me ...