Web Server (Java)

Minimal Java socket servers implemented in three variants:

• Single-threaded server with a simple client
• Multi-threaded server with a simple client
• Thread pool-based server

Requirements

• Java JDK 11 or newer (javac and java on PATH)
• Linux/macOS shell (commands use Bash)

Project layout

• singleThreaded/ — package singleThreaded with Server and Client on port 8090
• multiThreaded/ — package multiThreaded with Server and Client on port 8010
• threadPool/ — package threadPool with Server on port 8010

Build

From the project root (/home/raghu/Documents/webserver):

mkdir -p out
javac -d out singleThreaded/*.java
javac -d out multiThreaded/*.java
javac -d out threadPool/*.java

This compiles all sources into the out/ directory, preserving package structure.

Run: Single-threaded variant

Server (port 8090):

java -cp out singleThreaded.Server

Client (in a separate terminal):

java -cp out singleThreaded.Client

Expected: client prints a single line response from the server.

Run: Multi-threaded variant

Server (port 8010):

java -cp out multiThreaded.Server

Client (spawns many concurrent requests):

java -cp out multiThreaded.Client

Expected: multiple responses printed, one per client thread.

Run: Thread pool variant

Server (port 8010, fixed-size pool):

java -cp out threadPool.Server

Note: There is no client for this variant in the repo. You can:

• Reuse multiThreaded.Client against port 8010, or
• Use nc to test: printf 'ping\n' | nc localhost 8010

Clean

rm -rf out

Notes

• Ensure no other process is using ports 8090 or 8010.
• Servers log basic connection info to stdout and run until terminated (Ctrl+C).