Hi I am doing android development, and found something weird while using socket API.

Question

Editorial Team

Asked: May 30, 20262026-05-30T10:58:11+00:00 2026-05-30T10:58:11+00:00

Between sockets that I created from

ServerSocket server = new ServerSocket(4444);
Socket client = server.accept();

and

client.getPort();

is not 4444.

Since the port number is almost random, the client cannot communicate with server application.
Any piece of information or advice will be helpful!

The full sample project is here.

Thanks in advance!

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Editorial Team · Answer 1 · 2026-05-30T10:58:12+00:00

Editorial Team

Referenced from Head First Java:

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