What is the meaning of the "default access specifier" in Java?

This is my answer to this question on Quora.

There are four access specifiers in Java: public, private, protected, and default. Three of them use their associated word, while default uses none. They appear as follows:

1
2
3
4
5
6
public class JavaApplication {
    Object object1;
    public Object object2;
    private Object object3;
    protected Object object4;
}

“object1” has default access. As others have said, that means that you can only access that feature (be it class, variable, method, etc.) from classes within the same package.