unit tests for nest based access control

core-java-11/src/main/java/com/baeldung/Outer.java

@@ -0,0 +1,24 @@
+package com.baeldung;
+
+import java.lang.reflect.Method;
+
+public class Outer {
+
+  public void outerPublic() {
+  }
+
+  private void outerPrivate() {
+  }
+
+  class Inner {
+
+    public void innerPublic() {
+      outerPrivate();
+    }
+
+  	public void innerPublicReflection(Outer ob) throws Exception {
+      Method method = ob.getClass().getDeclaredMethod("outerPrivate");
+      method.invoke(ob);
+  	}
+  }
+}