Cannot compile inner classes

I have java source files that were created in another IDE. Some of these source files contain inner classes. When I attempt to compile them in JDev9i, the inner classes are not output.
Has anyone experienced this problem in JDev?

When I compile the source files containing inner classes, JDev does not output any Outerclass$xxx.class files, and the compiler complains that (for example):
D:\path_to_source\source.java
-Error(50,3): class VCMailer FileOpen$1 not found in class VCMailer.VCMailer
There are no compile errors other than not being able to find the inner class files. FYI, the same file, unaltered, compiles without a problem in my other IDE. Building or making makes no difference, and the problem occurs whether it's the individual file, the project, or the workspace.
I've done a test, creating a new class within the same project with a simple structure such as:
package VCMailer;
public class test {
public test() {
class innerTest{
public innerTest(){
This source file properly outputs an inner class. Strange.
Matthew

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I have an applet with inner classes (the applet is contained in a single .java file). When I compile the applet, a number of *$*.class files are created for the inner classes. However, a friend of mine compiles the same .java file and he gets a single .class file. He can't see any files corresponding to the inner classes. My compiler is version 1.4.0, his is 1.4.2. Can you suggest how my friend can generate the *$*.class files corresponding to the inner classes?
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Let me try again. My friend gets a single .class file.
If he invokes the applet like this:
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This maybe just an interpretation of the language standard, but the compiler behavaviour is different from previous versions of JDeveloper and other Java IDE's, with no explanation found.
Using JDeveloper 9.02.829 the following error is received.
Error(13,9): class test$abc not found in class test.test
when compiling the following class
package test;
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class abc { }
public test()
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abc a = new abc();
The solution is to ensure the package name and class name are different (case sensitive) iff the class contains an inner class
Whilst this can be done it can pose a problem porting older code into this release of JDeveloper, whilst no problem exists with other IDE's or older versions of the JDevloper IDE.
The question is this a bug or a feature?

This is a bug that got fixed a while back. The bug is with
the fact that the class and the package have the same name.
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Ant not always compiling inner classes

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Problem Compiling Inner Class

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Why inner classes cannot have static declarations ?

Hi Friends,
When i tried to make static declarations on a inner class which is non static, i am getting compilation error saying "inner classes cannot have static declarations". I want to know reason behind this implementation.
Code which i have tried:
public class TestOuter
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static int i =10;
public static boolean validate(int a){
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so I think if the
outer class is not static , then Inner class can't be
static as well. This is incorrect. An enclosed class can be indeed static while the outer is not, and vice versa.
The difference between static/non static in regards to enclosed classes is that the static ones are 'top-level' and cannot access the members of the enclosing class.
The effect of making an enclosed class static means there is only one instance of any variables, no matter how many instances of the outer class are created. In this situation how could the static inner class know which variables to access of its non static outer class. Of course the answer is that it could not know, and thus an static inner class cannot access instance variables of its enclosing class.
Now, regarding non-static inner classes, and trying to give a valid answer to the original post:
As with instance methods and variables, a non-static inner class is associated with an instance of its enclosing class and has direct access to that object's instance variables and methods.
TestOuter outer = new TestOuter();
TestOuter.TestInner inner = outer.new TestInner();Because an inner class is associated with an instance (inner class implicitly keeps a reference to the object of the enclosing class that created it), it cannot define any static members itself. Static members cannot access the this pointer.
So, in an ordinary (non-static) inner class, the link to the outer class object is achieved with a special this reference. A static inner class does not have that special this reference, nor would a static method/variable of an ordinary (non-static) inner class.

Compiler error when useing switch statements in an inner class

I have defined several constants in a class and want to use this constans also in an inner class.
All the constants are defined as private static final int.
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Look at an example:
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Just a though:
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HELP: Cannot refer to non-final variable inside inner class

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It is already set to that - it does look correct in Eclipse, honest.
It's just the block that's gone crazy with the formatting. I've spent around 10 minutes trying to tweak it just so it displays correctly but it wasn't making sense.
I'd rather not turn this conversation into a judgement of my code-style - I already understand that it doesn't conform to the 'Java way' and I've had Java programmers bash me about it for a long time.

BUG: Oracle Java Compiler bug with anonymous inner classes in constructor

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Compiler bug with generics and private inner classes

There appears to be a bug in the sun java compiler. This problem was reported against eclipse and the developers their concluded that it must be a problem with javac.
Idea also seems to compile the example below. I couldn't find a bug report in the sun bug database. Can somebody tell me if this is a bug in javac and if there is a bug report for it.
https://bugs.eclipse.org/bugs/show_bug.cgi?id=185422
public class Foo <T>{
private T myT;
public T getT() {
return myT;
public void setT(T aT) {
myT = aT;
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public static void main(String[] args) {
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myBar.setT(new Baz());
System.out.println(myBar.getT().toString());
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@Override
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Eclipse compiles and runs the code even though the Baz inner class is private.
javac reports:
Bar.java:1: Bar.Baz has private access in Bar
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^
1 error

As I said in my original post its not just eclipse that thinks the code snippet is compilable. IntelliJ Idea also parses it without complaining. I haven't looked at the java language spec but intuitively I see no reason why the code should not compile. I don't think eclipse submitting bug reports to sun has anything to do with courage. I would guess they just couldn't be bothered.

Why Inner class cannot access static variables

Why is it that inner class can use only static final variables of the outerclass, and not ordinary static variables of the outer class. "Yes the JLS sepcifies that only final static variables can be used inside an inner class, esp a non blank final variable". But why this restriction.
Thanks.

so what are final static variables treated as if they
are not variables. So if the final static value is
not loaded when the class is loaded how will the
class know about the value.??The actual value wil be substituted for the name of a static final value at compile time. That's why you can use them in switch statements where you can't use any variable variable.
This is something to watch out for, by the way, because if you use a public static final value from one class in another the actual value will be compiled into the using class, so if you change the value where it's defined the class using it will have the old value until it's recompiled.

Cannot compile class with a package

Hello,
I am trying to implement the package example from the SUN Tutorial. It can be found on the page: http://java.sun.com/docs/books/tutorial/java/interpack/QandE/packages-questions.html
I think I am doing like described but it doesn�t work. The files are stored like following on my machine:
D:\Test\Java\mygame\Shared\Utilities.java               (this file can be compiled)
D:\Test\Java\mygame\Server\Server.java                    (can�t be compiled)
D:\Test\Java\mygame\Client\Client.java                    (can�t be compiled)
I have no CLASSPATH set (but I tried), Java is installed in C:\Java\j2sdk, I also tried D:\mygame\Shared\Utilities|Server|Client.java
The error message is:
cannot resolve symbol
Are there any further prerequisites?
Thank you

This is a minimal explanation of packages.
Assume that your programs are part of a package named myapp, which is specified by this first line in each source file: package myapp;
Also assume that directory (C:\java\work\) is listed in the CLASSPATH list of directories.
Also assume that all your source files reside in this directory structure: C:\java\work\myapp\
Then a statement to compile your source file named aProgram.java is:
C:\java\work\>javac myapp\aProgram.java
And a statement to run the program is:
java myapp.aProgram
(This can be issued from any directory, as Java will search for the program, starting the search from the classpath directories.)
Explanation:
Compiling
A class is in a package if there is a package statement at the top of the class.
The source file needs to be in a subdirectory structure. The subdirectory structure must match the package statement. The top subdirectory must be in the classpath directory.
So, you generate a directory structure C:\java\work\myapp\ which is the [classpath directory + the package subdirectory structure], and place aProgram.java in it.
Then from the classpath directory (C:\java\work\) use the command: javac myapp\aProgram.java
Running
Compiling creates a file, aProgram.class in the myapp directory.
(The following is where people tend to get lost.)
The correct name now, as far as java is concerned, is the combination of package name and class name: myapp.aProgram (note I omit the .class) If you don't use this name, java will complain that it can't find the class.
To run a class that's NOT part of a package, you use the command: java SomeFile (assuming that SomeFile.class is in a directory that's listed in the classpath)
To run a class that IS part of a package, you use the command java myapp.aProgram (Note that this is analogous to the command for a class not in a package, you just use the fully qualified name)
Here is a reference: http://java.sun.com/j2se/1.4.1/docs/tooldocs/findingclasses.html

Cannot compile inner classes

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