diff --git a/resources/syntaxtreegenerator/Sealed.ast b/resources/syntaxtreegenerator/Sealed.ast
new file mode 100644
index 00000000..24423ca0
--- /dev/null
+++ b/resources/syntaxtreegenerator/Sealed.ast
@@ -0,0 +1,144 @@
+class Shape {
+
+Shape(){
+    super(());
+  }
+  Shape(){
+    super(());
+  }
+
+}class Circle {
+
+Circle(){
+    super(());
+  }
+  Circle(){
+    super(());
+  }
+
+}class Rectangle {
+
+Rectangle(){
+    super(());
+  }
+  Rectangle(){
+    super(());
+  }
+
+}class TransparentRectangle {
+
+TransparentRectangle(){
+    super(());
+  }
+  TransparentRectangle(){
+    super(());
+  }
+
+}class FilledRectangle {
+
+FilledRectangle(){
+    super(());
+  }
+  FilledRectangle(){
+    super(());
+  }
+
+}class Square {
+
+Square(){
+    super(());
+  }
+  Square(){
+    super(());
+  }
+
+}class WeirdShape {
+
+WeirdShape(){
+    super(());
+  }
+  WeirdShape(){
+    super(());
+  }
+
+}class Expr {
+
+}class ConstantExpr {
+
+  java.lang.Integer i;
+ConstantExpr(java.lang.Integer i){
+    super(());
+    this.i = i;
+  }
+  java.lang.Integer i(){
+    return this.i;
+  }
+
+  ConstantExpr(java.lang.Integer i){
+    super(());
+    this.i = i;
+  }
+
+}class PlusExpr {
+
+  Expr a;
+  Expr b;
+PlusExpr(Expr a, Expr b){
+    super(());
+    this.a = a;
+    this.b = b;
+  }
+  Expr a(){
+    return this.a;
+  }
+
+  Expr b(){
+    return this.b;
+  }
+
+  PlusExpr(Expr a, Expr b){
+    super(());
+    this.a = a;
+    this.b = b;
+  }
+
+}class TimesExpr {
+
+  Expr a;
+  Expr b;
+TimesExpr(Expr a, Expr b){
+    super(());
+    this.a = a;
+    this.b = b;
+  }
+  Expr a(){
+    return this.a;
+  }
+
+  Expr b(){
+    return this.b;
+  }
+
+  TimesExpr(Expr a, Expr b){
+    super(());
+    this.a = a;
+    this.b = b;
+  }
+
+}class NegExpr {
+
+  Expr e;
+NegExpr(Expr e){
+    super(());
+    this.e = e;
+  }
+  Expr e(){
+    return this.e;
+  }
+
+  NegExpr(Expr e){
+    super(());
+    this.e = e;
+  }
+
+}
\ No newline at end of file
diff --git a/resources/syntaxtreegenerator/javFiles/Sealed.jav b/resources/syntaxtreegenerator/javFiles/Sealed.jav
new file mode 100644
index 00000000..b7a68e5a
--- /dev/null
+++ b/resources/syntaxtreegenerator/javFiles/Sealed.jav
@@ -0,0 +1,21 @@
+public abstract sealed class Shape
+    permits Circle, Rectangle, Square, WeirdShape {  }
+
+public final class Circle extends Shape {  }
+
+public sealed class Rectangle extends Shape 
+    permits TransparentRectangle, FilledRectangle {  }
+public final class TransparentRectangle extends Rectangle {  }
+public final class FilledRectangle extends Rectangle {  }
+
+public final class Square extends Shape {  }
+
+public non-sealed class WeirdShape extends Shape {  }
+
+public sealed interface Expr
+    permits ConstantExpr, PlusExpr, TimesExpr, NegExpr { }
+
+public record ConstantExpr(int i)       implements Expr { }
+public record PlusExpr(Expr a, Expr b)  implements Expr { }
+public record TimesExpr(Expr a, Expr b) implements Expr { }
+public record NegExpr(Expr e)           implements Expr { }
\ No newline at end of file
diff --git a/src/test/java/syntaxtreegenerator/TestNewFeatures.java b/src/test/java/syntaxtreegenerator/TestNewFeatures.java
index 3bf0cfe8..067dc0f4 100644
--- a/src/test/java/syntaxtreegenerator/TestNewFeatures.java
+++ b/src/test/java/syntaxtreegenerator/TestNewFeatures.java
@@ -69,6 +69,26 @@ public class TestNewFeatures {
         }
     }
 
+    @Test
+    public void sealedTest() {
+        try {
+            FileInputStream fileIn = new FileInputStream(javFiles.get("Sealed")[1]);
+            String expectedAST = new String(fileIn.readAllBytes());
+            fileIn.close();
+            expectedAST = expectedAST.replaceAll("TPH [A-Z]+", "TPH");
+            File srcfile = javFiles.get("Sealed")[0];
+            JavaTXCompiler compiler = new JavaTXCompiler(srcfile);
+            String resultingAST = new String(ASTPrinter.print(compiler.sourceFiles.get(srcfile)));
+            resultingAST = resultingAST.replaceAll("TPH [A-Z]+", "TPH");
+            System.out.println("Expected:\n" + new String(expectedAST));
+            System.out.println("Result:\n" + new String(resultingAST));
+            assertEquals("Comparing expected and resulting AST for Sealed.jav", expectedAST, resultingAST);
+        } catch (Exception exc) {
+            exc.printStackTrace();
+            fail("An error occured while generating the AST for Sealed.jav");
+        }
+    }
+
     @Test
     public void switchTest() {
         try {