Differences

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--- java:instanceof [2017/02/14 09:16] – gthanos
+++ java:instanceof [2020/02/25 09:33] (current) – external edit 127.0.0.1
@@ Line 20: / Line 20: @@
 <code java InstanceofDemo.java>
 class InstanceofDemo {
-    public static void main(String[] args) {
+  public static void main(String[] args) {
-        Parent obj1 = new Parent();
+    Parent obj1 = new Parent();
-        Parent obj2 = new Child();
+    Parent obj2 = new Child();
-        System.out.println("obj1 instanceof Parent: "
+    System.out.println("obj1 instanceof Parent: "
-            + (obj1 instanceof Parent));
+      + (obj1 instanceof Parent));
-        System.out.println("obj1 instanceof Child: "
+    System.out.println("obj1 instanceof Child: "
-            + (obj1 instanceof Child));
+      + (obj1 instanceof Child));
-        System.out.println("obj1 instanceof MyInterface: "
+    System.out.println("obj1 instanceof MyInterface: "
-            + (obj1 instanceof MyInterface));
+      + (obj1 instanceof MyInterface));
-        System.out.println("obj2 instanceof Parent: "
+    System.out.println("obj2 instanceof Parent: "
-            + (obj2 instanceof Parent));
+      + (obj2 instanceof Parent));
-        System.out.println("obj2 instanceof Child: "
+    System.out.println("obj2 instanceof Child: "
-            + (obj2 instanceof Child));
+      + (obj2 instanceof Child));
-        System.out.println("obj2 instanceof MyInterface: "
+    System.out.println("obj2 instanceof MyInterface: "
-            + (obj2 instanceof MyInterface));
+      + (obj2 instanceof MyInterface));
-    }
+  }
 }
 </code>
+Το παραπάνω πρόγραμμα εκτυπώνει
+<code>
+obj1 instanceof Parent: true
+obj1 instanceof Child: false
+obj1 instanceof MyInterface: false
+obj2 instanceof Parent: true
+obj2 instanceof Child: true
+obj2 instanceof MyInterface: true
+</code>
+|Προηγούμενο: [[ :java:comparable | Συγκρίνοντας αντικείμενα μεταξύ τους  ]] | [[:toc|Περιεχόμενα]] | Επόμενο: [[ :java:nested_classes | Εμφωλευμένες Κλάσεις ]]|