diff --git a/src/main/java/de/maishai/Compiler.java b/src/main/java/de/maishai/Compiler.java
index bb9ff7c..043d1cf 100644
--- a/src/main/java/de/maishai/Compiler.java
+++ b/src/main/java/de/maishai/Compiler.java
@@ -3,11 +3,14 @@ package de.maishai;
 import de.maishai.antlr.DecafLexer;
 import de.maishai.antlr.DecafParser;
 import de.maishai.ast.records.Class;
+import de.maishai.ast.records.Program;
 import de.maishai.typedast.CodeGenUtils;
 import de.maishai.typedast.typedclass.TypedClass;
 import org.antlr.v4.runtime.*;
 
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
 
 /**
  * Decaf language Compiler
@@ -34,27 +37,35 @@ public class Compiler {
                 """);
     } */
 
-    public static Class generateAST(String fromSource) {
-        CharStream input = CharStreams.fromString(fromSource);
-        DecafLexer lexer = new DecafLexer(input);
-        CommonTokenStream tokens = new CommonTokenStream(lexer);
-        DecafParser parser = new DecafParser(tokens);
-        DecafParser.ClassContext tree = parser.class_(); //Parsen
-        return ASTGenerator.generateAST(tree);
-    }
-
-    public static Class generateASTFromFile(String sourcePath) {
-        ANTLRInputStream antlrInputStream;
-        try {
-            antlrInputStream = new ANTLRFileStream(sourcePath);
-        } catch (IOException e) {
-            System.out.println("Ungültiger Dateipfad D:");
-            throw new RuntimeException("Ungültiger Dateipfad D:");
+    public static Program generateAST(List<String> fromSources) {
+        List<Class> classes = new ArrayList<>();
+        for (String fromSource : fromSources) {
+            CharStream input = CharStreams.fromString(fromSource);
+            DecafLexer lexer = new DecafLexer(input);
+            CommonTokenStream tokens = new CommonTokenStream(lexer);
+            DecafParser parser = new DecafParser(tokens);
+            DecafParser.ClassContext tree = parser.class_(); //Parsen
+            classes.add(ASTGenerator.generateAST(tree));
         }
-        return generateAST(antlrInputStream.toString());
+        return new Program(classes);
     }
 
-    public static TypedClass generateTypedASTFromAst(Class ast) {
+    public static Program generateASTFromFile(List<String> sourcePaths) {
+        List<String> sources = new ArrayList<>();
+        for (String sourcePath : sourcePaths) {
+            ANTLRInputStream antlrInputStream;
+            try {
+                antlrInputStream = new ANTLRFileStream(sourcePath);
+            } catch (IOException e) {
+                System.out.println("Ungültiger Dateipfad D:");
+                throw new RuntimeException("Ungültiger Dateipfad D:");
+            }
+            sources.add(antlrInputStream.toString());
+        }
+        return generateAST(sources);
+    }
+
+    public static TypedClass generateTypedASTFromAst(Program ast) {
         TypedClass typedAST = new TypedClass();
         typedAST = (TypedClass) typedAST.startConversion(ast);
         return typedAST;
@@ -64,35 +75,42 @@ public class Compiler {
         return typedAST.codeGen();
     }
 
-    public static byte[] generateByteCodeArray(String fromSource) {
-        Class ast = generateAST(fromSource);
+    public static byte[] generateByteCodeArray(List<String> fromSources) {
+        Program ast = generateAST(fromSources);
         TypedClass typedAST = generateTypedASTFromAst(ast);
         return generateByteCodeArrayFromTypedAst(typedAST);
     }
 
-    public static byte[] generateByteCodeArrayFromFile(String sourcePath) {
-        ANTLRInputStream antlrInputStream;
-        try {
-            antlrInputStream = new ANTLRFileStream(sourcePath);
-        } catch (IOException e) {
-            System.out.println("Ungültiger Dateipfad D:");
-            throw new RuntimeException("Ungültiger Dateipfad D:");
+    public static byte[] generateByteCodeArrayFromFile(List<String> sourcePaths) {
+        List<Class> classes = new ArrayList<>();
+        for (String sourcePath : sourcePaths) {
+            ANTLRInputStream antlrInputStream;
+            try {
+                antlrInputStream = new ANTLRFileStream(sourcePath);
+            } catch (IOException e) {
+                System.out.println("Ungültiger Dateipfad D:");
+                throw new RuntimeException("Ungültiger Dateipfad D:");
+            }
+            DecafLexer lexer = new DecafLexer(antlrInputStream);
+            CommonTokenStream tokens = new CommonTokenStream(lexer);
+            DecafParser parser = new DecafParser(tokens);
+            DecafParser.ClassContext tree = parser.class_(); //Parsen
+            Class ast = ASTGenerator.generateAST(tree);
+            classes.add(ast);
         }
-        DecafLexer lexer = new DecafLexer(antlrInputStream);
-        CommonTokenStream tokens = new CommonTokenStream(lexer);
-        DecafParser parser = new DecafParser(tokens);
-        DecafParser.ClassContext tree = parser.class_(); //Parsen
-        Class ast = ASTGenerator.generateAST(tree);
-        TypedClass typedAST = generateTypedASTFromAst(ast);
+        Program program = new Program(classes);
+        TypedClass typedAST = generateTypedASTFromAst(program);
+        //TODO: Für jede Klasse einzeln Bytecode generieren
         return generateByteCodeArrayFromTypedAst(typedAST);
     }
 
-    public static void generateByteCodeFileFromFile(String sourcePath, String classname) {
+    public static void generateByteCodeFileFromFile(List<String> sourcePath, String classname) {
         byte[] bytes = generateByteCodeArrayFromFile(sourcePath);
+        //TODO: Für jede Klasse einzeln Bytecode schreiben
         CodeGenUtils.writeClassfile(bytes, classname);
     }
 
     public static void main(String[] args) {
-        generateByteCodeFileFromFile("src/main/resources/JavaTestfiles/ClassCanBeTyped.java", "ClassCanBeTyped");
+        generateByteCodeFileFromFile(List.of("src/main/resources/JavaTestfiles/ClassCanBeTyped.java"), "ClassCanBeTyped");
     }
 }
diff --git a/src/main/java/de/maishai/ast/records/Node.java b/src/main/java/de/maishai/ast/records/Node.java
index 2e3cf76..0d3e782 100644
--- a/src/main/java/de/maishai/ast/records/Node.java
+++ b/src/main/java/de/maishai/ast/records/Node.java
@@ -1,4 +1,4 @@
 package de.maishai.ast.records;
 
-public sealed interface Node permits Block, Class, Constructor, Expression, Declaration, Method, Parameter, Statement {
+public sealed interface Node permits Block, Class, Constructor, Declaration, Expression, Method, Parameter, Program, Statement {
 }
diff --git a/src/main/java/de/maishai/ast/records/Program.java b/src/main/java/de/maishai/ast/records/Program.java
new file mode 100644
index 0000000..11d85b8
--- /dev/null
+++ b/src/main/java/de/maishai/ast/records/Program.java
@@ -0,0 +1,6 @@
+package de.maishai.ast.records;
+
+import java.util.List;
+
+public record Program(List<Class> classes) implements  Node {
+}
diff --git a/src/main/java/de/maishai/typedast/typedclass/TypedClass.java b/src/main/java/de/maishai/typedast/typedclass/TypedClass.java
index 2e9fab6..31a2989 100644
--- a/src/main/java/de/maishai/typedast/typedclass/TypedClass.java
+++ b/src/main/java/de/maishai/typedast/typedclass/TypedClass.java
@@ -123,9 +123,9 @@ public class TypedClass implements TypedNode {
         return type;
     }
 
-    public TypedNode startConversion(Class c) {
+    public TypedNode startConversion(Program p) {
         Map<String, Type> local = new HashMap<>();
-
+        Class c = p.classes().get(0);
         return new TypedClass(c);
     }