3 files changed, 58 insertions, 0 deletions
diff --git a/output/ex20.java b/output/ex20.java
new file mode 100644
index 0000000..87dca29
--- /dev/null
+++ b/output/ex20.java
@@ -0,0 +1,22 @@
+class ex20 {
+    public static void main(String[] a){
+        System.out.println(new A().start());
+    }
+}
+
+class C extends B{
+}
+
+class B extends A{
+}
+
+class A{
+
+    A a;
+    C c;
+
+    public int start(){
+        a = c;
+        return 0;
+    }
+}
diff --git a/output/ex21.java b/output/ex21.java
new file mode 100644
index 0000000..2bb11a3
--- /dev/null
+++ b/output/ex21.java
@@ -0,0 +1,24 @@
+class test66{
+    public static void main(String[] a){
+        System.out.println(new Test().start());
+    }
+}
+
+class Test2 extends Test{
+}
+
+class Test{
+
+    Test test;
+
+    public int start(){
+        test = test.next();
+        return 0;
+    }
+
+    public Test next() {
+        Test2 test2;
+        test2 = new Test2();
+        return test2;
+    }
+}
diff --git a/output/negative/ExtendMissing.java b/output/negative/ExtendMissing.java
new file mode 100644
index 0000000..72a487a
--- /dev/null
+++ b/output/negative/ExtendMissing.java
@@ -0,0 +1,12 @@
+class ExtendMissing {
+    public static void main(String[] a){
+	System.out.println(new Test().start());
+    }
+}
+
+class Test extends NotPresent {  //TE
+
+    public int start(){
+	return 0;
+    }
+}