source « class file « Java I/O Q&A





1. the main class in a java source file?    stackoverflow.com

im new to java. the standard code that is created after i created a new project in netbeans is:

package helloworldapp;

public class Main {

    public static void main(String[] args) {
 ...

2. Except classes and interfaces is there anything else we can write in a java source file?    stackoverflow.com

Except classes and interfaces is there anything else we can write in a java source file? because what ever .java file i have seen will have either class or interface in ...

3. Retrieve method source code from class source code file    stackoverflow.com

I have here a String that contains the source code of a class. Now i have another String that contains the full name of a method in this class. The method ...

4. source file can't have more than one public class    stackoverflow.com

we can declare only one public file in a source file and file name must match the public class name is there any reason to this restriction....

5. Get Class Annotations from Java Source File    stackoverflow.com

I'm parsing Java Source Files to collect various informations about my classes. Therefore I'm using the JavaParser, since I could not find a good alternative (good suggestions have the ...

6. Converting class to Java source file    coderanch.com

Hi guys, I don't know if this topic belongs here but I am gonna explain my litte problem anyway. By mistake I deleted some part of Java code in my app. I tried to restore Windows to save the source file but it didn't work. I didn't get back the original source code no matter what I tried. But instead I ...

9. only one PUBLIC CLASS per source file..... But Why..?????    coderanch.com

Lets say i have ten java classes and i want all of them to be public. It implies(according to java) that i need to declare each of them in a different source file. But that is so irritating. Why is it so strictly compulsory..?? Will it be a problem if i have al my public classes in the same source file..?? ...





10. how to convert .class file to source file    coderanch.com

Hi mohan posting the same question in multiple forums and using the words 'urgent' rerely help so try to avoid them anyway you have decompilers avaiable for converting the .class files into source code , you can do a google search and you will find plenty of them out there , the one i am using is Cavaj DeCompiler which is ...

12. why do we have atmost one public class in a source file    coderanch.com

Hi Divya, The reason for this is to force a coding convention onto programmers. If you are looking at somebody else's source, then all you should be interested in is the public classes. If the public classes are in files of the same name, its easy to find them. I believe thats the the theory anyway... ------------------ - Daniel

13. Classes in source file    coderanch.com

15. Is there a way to convert a class file back to java source?    coderanch.com

there are a pretty good no. of decompilers available. they can convert class files back to understandable but a bit different java code. Most of ur variable names will also be retained, though in some cases, it will use its own nomenclature. Also see obfuscators which are used to complicate the code beyond understandable limits.

16. JAVA class file source code.    coderanch.com





17. Public Class in a source file    coderanch.com

It is just a requirement enforced by many Java compilers (javac included) ; it's not part of the language definition. It allows the compiler to find classes that it may need to compile while it's in the process of compiling another class. [ July 14, 2003: Message edited by: Ernest Friedman-Hill ]

18. difference between a source file and a class file    coderanch.com

sourcepath - where to find sources files, with text of java program. Class path - in your sources you can use already compiled classes (for example your friend wrote some class but you don't have his source text, but only compiled version .class), if you wish to use the class in your program, compiler should check signature of functions (it likes ...

19. One Public Class Per Source File?    coderanch.com

20. Multiple classes in one source code file    coderanch.com

Hi there. I have placed 1 public and 1 default class in a file. The name matches the public class name. class OtherClass{ public static void main(String[] args){ System.out.println("Inside OtherClass main"); } } public class ClassTester{ public static void main (String[] args) { System.out.println("Inside ClassTester main"); } } I had intended for the JVM to execute the public class and not ...

21. class name and source file name    coderanch.com

I read it is mandatory to have the same name for the public class as the source filename for the program to compile. I also read it somewhere that it is a compiler constraint to have the same name at both the places. Could someone please give me an insight into it. Why exactly same name is needed, is it tht ...

22. why a class must be named in the name of public class in a source file?    coderanch.com

The soul is dyed the color of its thoughts. Think only on those things that are in line with your principles and can bear the light of day. The content of your character is your choice. Day by day, what you do is who you become. Your integrity is your destiny - it is the light that guides your way. - ...

24. Source file and public class    coderanch.com

25. why only one public class per source file?    coderanch.com

*I* think the point is that each compilation unit has a single public interface represented by that public class. Now, this allows the source for a given class to be found by a compiler or a debugger e.g. when you compile a single class the compiler will search for source files for external references that might not have been compiled, or ...

27. Two classes defined in the same source file ??    coderanch.com

Hello all. I'm making my way through 'Head First Java' and have encountered what seems to be a contradiction... Early on (on page 7) the book emphasizes that code structure in Java requires that a source file hold one and only one class definition. Later in the book (pg. 73) there is an example to demonstrate instance variables. I typed the ...

28. only 1 public class per source file    coderanch.com

29. Two classes with public access specifier in a single source file    coderanch.com

Why? Because it made things simpler for the authors of the first Java compiler. Only public classes are visible outside of their package; therefore, under some circumstances you'll need to easily find the source for a class in another package. If that class is guaranteed to be in a file named after the class, the task becomes trivial.

30. two public classes in same source file?    coderanch.com

Today I have given a code public class A { class B b; } public class B { class A a; } and he asked is there any error?? I told him we can't place two public classes in a single source file..He said no it is possible. then he changes the code as public class A { class B b; ...

31. class file to source file    coderanch.com

32. how to import custom made class in source file    coderanch.com

Hi every body. I have few questions . Let say we created a class named Car in our source file. In the same source file I want to create two objects car1,car2, based on class Car( that is i want to create two instances of class Car) Can i create these objects as shown below: Car car1 = new Car(); Car ...

34. Getting source from class files    forums.oracle.com

35. *Added* code to existing source file, compiled it, and class file shrunk    forums.oracle.com

Another newbie here. Fortunately, my classpath is ok, so I'm able to compile a .java file. I added one line of code (System.out.println) to write the value of a variable to a log. After compiling with javac, I noticed that the resulting [new] class file was smaller than the existing class file. I looked at each of the class files with ...

37. How do you load raw java source (.java) files for use in a ClassLoader?    forums.oracle.com

I'm fairly new to Java, so I'm not sure if this can be done or not, but: I'm attempting to create a program that will allow users to extend the functionality by writing their own Java "extensions". These extensions are located in a directory parallel to the JAR file and will be called at a certain moment. I have tried using ...

38. Multiple class definitions in a single java source file    forums.oracle.com

Just my two cents, but if I have a "helper" class, I place it in a separate file and omit the public declaration. One can conceivably do the same and instead put them in the same source file. However, if other people are going to maintain your code, it is unusual to expect multiple classes per file.

39. why only one public class in a source file?    forums.oracle.com

PhHein wrote: Because the JLS says so. It does? From section 7.6 of the JLS (third edition): When packages are stored in a file system (7.2.1), the host system may choose to enforce the restriction that it is a compile-time error if a type is not found in a file under a name composed of the type name plus an extension ...

40. more than one "class file" generated when I compile my source code    forums.oracle.com

Hi, I have a file call "abc.java" when I want to compile it, i get a "warning" message that I'm using a deprecated line, but the class files generated are: abc.class abc$1.class abc$2.class Also I compile a class that does'nt use the "deprecated keyword" but also I obtain files like: xyz.class xyz$1.class .... So my question is: why those $1 files ...

43. only one PUBLIC CLASS per source file..... But Why..?????    forums.oracle.com

Lets say i have ten java classes and i want all of them to be public. It implies(according to java) that i need to declare each of them in a different source file. But that is so irritating. Why is it so strictly compulsory..?? Will it be a problem if i have al my public classes in the same source file..?? ...

44. class file to source code    forums.oracle.com

45. Finding which source is the correct one for a compiled class file    forums.oracle.com

I have a compiled class (myclass.class) and 3 source files for it (myclass.java). Is there any method, utility, or software that will let me find which source file is the correct one? I have about a 100 of these classes which have a lot of copies of the source and we don't know which source is the correct one. The compiled ...

46. help::::::multiple class files with single source file    forums.oracle.com

private void create() { jLabel1 = new JLabel(); jLabel2 = new JLabel(); jTextField1 = new JTextField(); jPasswordField1 = new JPasswordField(); jButton1 = new JButton(); jframe = new JFrame(); contentPane = (JPanel)this.getContentPane(); // // jLabel1 // jLabel1.setHorizontalAlignment(SwingConstants.LEFT); jLabel1.setForeground(new Color(0, 0,0)); jLabel1.setText("USERNAME:"); jLabel1.setFont(new Font("Lucida Sans",Font.ITALIC,12)); // // jLabel2 // jLabel2.setHorizontalAlignment(SwingConstants.LEFT); jLabel2.setForeground(new Color(0,0,0)); jLabel2.setText("PASSWORD:"); jLabel2.setFont(new Font("Lucida Sans",Font.ITALIC,12)); // // jTextField1 // jTextField1.setForeground(new Color(0, 0, ...