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Networking Concepts

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Networking Concepts

java.net covers sockets, URLs, addresses. Socket = endpoint for TCP communication.

URL/URLConnection fetch remote resources.

Always handle IOException.

Write one tiny example for Networking Concepts. Compile, print one result, and say the output out loud before you type.

Use Networking Concepts only when the problem needs it. Don’t force it into every program. Know one beginner trap.

Let's take this on the board with one tiny Main class — no extra files. Networking Concepts — prints local machine host name and IP — basic networking API. Start from main, go line by line, and stop at each print. That output is the proof for Networking Concepts.

Exam tip

Client socket needs host + port.

Example

import java.net.InetAddress;
public class Main {
  public static void main(String[] args) throws Exception {
    InetAddress local = InetAddress.getLocalHost();
    System.out.println(local.getHostName());
    System.out.println(local.getHostAddress());
  }
}

Networking Concepts — prints local machine host name and IP — basic networking API.

Short notes

DefNetworking Concepts is a Java idea you should explain with one small example.
RuleKnow the keyword / API used for Networking Concepts. Type a tiny Main and print one result.
RememberFor Networking Concepts, say the output before you code.
TrapNetworking Concepts — only memorising the heading. No example, no trap.
Socket = endpoint
URL for resources

import java.net.InetAddress; public class Main { public static void main(String[] args) throws Exception { InetAddress local = InetAddress.getLocalHost(); System.out.println(local.getHostName()); System.out.println(local.getHostAddress()); } }

Networking Concepts

Example

Short notes

Questions

Networking Concepts

Example

Short notes

Questions