Java: Subpackage visibility?

Question

I have two packages in my project: odp.proj and odp.proj.test. There are certain methods that I want to be visible only to the classes in these two

Answer 1

Without putting the access modifier in front of the method you say that it is package private.
Look at the following example.

package odp.proj;
public class A
{
    void launchA() { }
}

package odp.proj.test;
public class B
{
    void launchB() { }
}

public class Test
{
    public void test()
    {
        A a = new A();
        a.launchA()    // cannot call launchA because it is not visible
    }
}