Question

I have been trying to learn Java for the past week, and have been able to produce reasonable codes so far. However, I seem to have a problem in understanding the Java naming convention.

I just looked at a tutorial which says that class names should start with an upper case. If I look at the codes so far I have wrote, I have actually used lower case names, such as:

import java.io.*;
import java.util.*;

class orange implements Comparator {
    public int mango(...) {
    }
}

class jason {
    public static void main(String args[]) throws java.io.IOException {
        {
            // Content here
        }
    }
}

As you can see, both my class names start with a lower case.

When I compile and execute the program, I don’t get any compile errors, and everything works as expected. I should have thought, since the class name starts with lower case, it would end up with a compile error: but this hasn’t happened. Why?

If it helps, I run OpenJDK and IcedTea.

Answer 1

A naming convention is a rule to follow as you decide what to name
your identifiers (e.g. class, package, variable, method, etc..) and it
is not an EXCEPTION.

A good programmer must and will follow the naming conventions specified in any programming language for a neat and effective program.

Refer to this page for more Java naming conventions.