Update scripts in readme

Author: bcExpt1123

README.md

@@ -101,13 +101,13 @@ Implementation and usage of graphs.
 
 ## Usage
 
-Each algorithm and data structure has its own folder. Navigate to the folder of the algorithm or data structure you want to use and compile the Java file:
+Run code:
 ```sh
-javac FileName.java
+  mvn clean compile exec:java
 ```
-Run the compiled Java file:
+Run test:
 ```sh
-java FileName
+  mvn test
 ```
 
 ## Contributing

pom.xml

@@ -12,6 +12,7 @@
         <maven.compiler.source>23</maven.compiler.source>
         <maven.compiler.target>23</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <exec.mainClass>org.alda.Main</exec.mainClass>
     </properties>
 
 </project>