CODEWITHSUNDEEP
javaclass
Chai
Chai

Reputation: 141

Java class files with $ symbol

I have a class with name StreamGo. It has 4 more class files with the same name like - StreamGo$1, StreamGo$2 etc. All these class files have different set of code. How do I merge them? And why does these class files get created with $1 and $2 etc?

Please help.

Upvotes: 0

Views: 236

Answers (3)

UVM
UVM

Reputation: 9914

If there is an inner class in your java file, then the compiler will create a class file with name of Java file along with $. You cannot combine these class files. But if you are copying these class files, make sure you are copying all the class files starting with $ symbol! else it will not work

Upvotes: 1

ruakh
ruakh

Reputation: 183341

Those class files are automatically generated for anonymous inner classes defined inside StreamGo.java. For example, if you have something like this:

final Runnable runnable = new Runnable() {
    public void run() {
        // ...
    }
};

then you'll have a StreamGo$1.class for the anonymous implementation of Runnable that you've defined here.

Named nested classes will do much the same, except that you'll get their names instead of the number part.

Upvotes: 2

SLaks
SLaks

Reputation: 887459

These are compiler-generated classes for anonymous classes that you create in your class.

Since Java bytecode requires a separate .class file for each class, you cannot merge them.

You may want to put all of your .class files into a .jar.

Upvotes: 1

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