Hello tj23 and welcome to the Java Programming Forums.
Java is an object oriented language so the code flow differs from a procedural language like Visual Basic 6.
There are some exceptions but Java code will always start from the Main method. For example,
public static void main (String[] args){
//Starting code here..
}
If you use this as your starting point then you should be able to see what methods are called from here and work out the code flow.
For more information try these links:
Lesson: A Closer Look at the "Hello World!" Application (The Java™ Tutorials > Getting Started)
Trail: Learning the Java Language (The Java™ Tutorials)