Fix bug in JavaAdapter.java of cannot override method in multi-layer interface

[mulingLHY]

Supposing that the program has a java abstract class as follows

interface C{
  public int methodInterfaceC(String str)
//...
}

interface B extends C{
//...
}

class A implements B{
//...
}

This PR fixes a bug in JavaAdapter that the method public int methodInterfaceC(String str) cannot be overrided correctly in javascript byJavaAdapter(Packages.A,{methodInterfaceC:function(){}},null)

[tuchida]

Could you write a unit test that shows what you are able to do?

This seems to be the test for JavaAdapter.
https://github.com/mozilla/rhino/blob/db5ce1665d06a3afb9cac9d556811fb6fc1fdc05/testsrc/doctests/javaadapter.doctest
Or you may want to add the file here.
https://github.com/mozilla/rhino/tree/db5ce1665d06a3afb9cac9d556811fb6fc1fdc05/testsrc/org/mozilla/javascript/tests

[mulingLHY]

Could you write a unit test that shows what you are able to do?

This seems to be the test for JavaAdapter.
https://github.com/mozilla/rhino/blob/db5ce1665d06a3afb9cac9d556811fb6fc1fdc05/testsrc/doctests/javaadapter.doctest
Or you may want to add the file here.
https://github.com/mozilla/rhino/tree/db5ce1665d06a3afb9cac9d556811fb6fc1fdc05/testsrc/org/mozilla/javascript/tests

Supposing that the program has a java abstract class as follows and I want to extend class A and override the method methodInInterfaceC in interface C, the current method getOverridableMethods cannot obtain such method. Considering that the methods in the interface are all public, I It can be solved by changing getDeclaredMethods to getMethods for interface.

interface C{
  public void methodInterfaceC()
//...
}

interface B extends C{
//...
}

Class A implements B{
//...
}

I found this probem when I was about to extend android.widget.BaseAdapter and override methods getCount,getView... which is declared in interfce android .widget.Adapter
I am an amateur from China and my English is not very good. If the expression is inaccurate or inappropriate, please forgive me.

[tuchida]

Thanks.
Perhaps you may want to create JavaAdapterTest.java. This will be helpful for you.
https://github.com/mozilla/rhino/blob/8442718d94434e4e1c054b6228d0d4b1603b2878/testsrc/org/mozilla/javascript/tests/InterfaceAdapterTest.java

Can you write test?

I am an amateur from China and my English is not very good. If the expression is inaccurate or inappropriate, please forgive me.

I don't understand English either, so I use a translation tool.

[mulingLHY]

Can you write test?

I still can’t use github proficiently, so I don’t know whether you mean this.
https://github.com/mulingLHY/rhino/blob/master/testsrc/org/mozilla/javascript/tests/TestJavaAdapter.java

[tuchida]

It looks good.
I think you commit to the wrong branch. Try to commit to patch-1 instead of master.

[tuchida]

Good! Please wait a moment for the owner to confirm.

[gbrail]

Thanks for doing this! I have a few specific comments.

Also, could you update the PR description with a bit longer explanation of what changed, combined with a small example like the one in your test? That will help a lot in writing the release notes.

[gbrail]

OK, you have answered lots of our questions. Thanks!