[N33D3DR3LI3F]

Hey, I'm new to the java programming and I have been learning about viruses also. So i'm trying to make a virus in java, that will search for the main method of a class and if there is a main class then it would alter the data of the arrays and all the other data variables present in that main class. So any ideas, help is welcome. 

PS. I know its a stupid idea but help me out in it. Thanks.

[Sogomn]

Java reflections allow you to load classes at runtime so that might be a good starting point.
You won't be able to make proper malware with Java tho.

[N33D3DR3LI3F]

Java reflections allow you to load classes at runtime so that might be a good starting point.
You won't be able to make proper malware with Java tho.

yeah because of the limitations of java, thanks btw

[CheesyBread]

yeah because of the limitations of java, thanks btw

Well with the Java Native Interface you could get around those issues, but you would still have to dive into a little bit of C or C++ programming. Of course with the amount of native programming necessary, you might as well just write the whole damn thing in C++.

[matt]

You can use a bytecode manipulation API like ASM, BCEL, JavaAssist & ByteBuddy to edit method bodies at runtime.

[matt]

Update: you're not even needing to change method bodies so it could be done with reflection, use a ClassLoader to load the class and then create a new instance using reflection and then change the fields