implemented basic FileReader functions in main.java

expressions.txt

-1 + xy^2 - (31 * x)y
\ No newline at end of file
+1 + xy^2 - (31 * x)y
+1 + x^2 - (3 * x)
+2x + 0,5x^2 - 1
\ No newline at end of file

src/Application.java

+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
 import java.util.Arrays;
 import java.util.List;
 
 public class Application {
     public static void main(String[] args) {
+        BufferedReader reader;
+        String datapath = "expressions.txt";
+        try {
+            System.out.println("Reading the file:");
+            reader = new BufferedReader(new FileReader(datapath));
+            String line = reader.readLine();
+            while(line != null) {
+                System.out.println(line);
+                line = reader.readLine();
+            }
+            System.out.println();
+            reader.close();
+        }
+        catch (IOException e ) {
+            e.printStackTrace();
+        }
         //List with a fitting String to be parsed into multiple tokens
         List<String> test = Arrays.asList("1 + xy^2 - (31 * x)y");
         //Iterates through every String