Fixed write bytecode into file

src/main/java/CompilerInput.txt

@@ -1,3 +1,3 @@
-public class Example() {
+public class Example {
 
 }

src/main/java/bytecode/ClassCodeGen.java

@@ -4,6 +4,7 @@ import ast.ClassNode;
 import ast.FieldNode;
 import ast.MemberNode;
 import ast.MethodNode;
+import java.io.File;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.Opcodes;
 
@@ -34,7 +35,14 @@ public class ClassCodeGen {
     }
 
     private void printIntoClassFile(byte[] byteCode, String name) {
-        String filePath = "./classFileOutput/" + name + ".class";
+        String filePath = "src/main/java/classFileOutput/" + name + ".class";
+
+        String directoryPath = "src/main/java/classFileOutput";
+        File directory = new File(directoryPath);
+        if (!directory.exists()) {
+            directory.mkdirs();
+        }
+
 
         try {
             FileOutputStream fileOutputStream = new FileOutputStream(filePath);