( This project is implemented using JDK 19 )
With this project you can interact with a local server on your PC that receives a command from the client and gives back some informations or results.
You can run the code using an IDE (for example: IntelliJ IDEA from JetBrains ). If you want to use the terminal ( for GNU/Linux or MacOS ) or the command prompt ( for Windows ), you have to install the JRE 19 on your machine.
To check the java version using the terminal :
$ java -version
You should get something similar to this :
To install JRE 19 using the terminal, use the following command :
Debian/Ubuntu
$ sudo apt install openjdk-19-jre
Arch Linux
$ sudo pacman -S jre-openjdk
Fedora
$ sudo dnf install -y java-19-openjdk
OpenSuse
$ sudo zypper --non-interactive install java-19-openjdk
In order to use this project the right way and see how it functions, you need to follow the following steps :
- Connect to the local server using port-number 2022 ( other port-numbers won´t be accepted )
-
Connect the client with the server :
- Ip-Address : localhost or 127.0.0.1
- Port : 2022
- As a client give one of the following commands and you will get some information from the server depending on which command is passed on :
| Command | Output | Command | Output |
|---|---|---|---|
| ECHO message | message | HISTORY | all given commands |
| CURRENT TIME | the current time ( format : HH:mm:ss ) | HISTORY k | the last k given commands. If k > the number of all given commands, you will get all guven commands. |
| CURRENT DATE | the current date ( format : dd.MM.yyyy) | LIST country | a list of all universities in the given country |
| ADD num1 num2 | num1 + num2 | LATEST NEWS | the latest news using an API GET request from tagesschau |
| SUB num1 num2 | num1 - num2 | HOLIDAYS x | all the holidays in Germany in year x |
| MUL num1 num2 | num1 * num2 | PING | PONG |
| DIV num1 num2 | num1 / num2 | others | ERROR |
-
Some examples :
-
List all universities in Germany :
