Create Instanceof.java

Author: juned-56

Instanceof.java

@@ -0,0 +1,42 @@
+interface Instanceof{}  
+class A implements Instanceof
+{  
+public void a()
+{
+    System.out.println("a  is method");
+    }  
+}  
+class B implements Instanceof
+{  
+public void b()
+{
+    System.out.println("b is method");
+    }  
+}  
+  
+class Call
+{  
+    void invoke(Instanceof p)
+{   //upcasting  
+    if(p instanceof A)
+{  
+    A a=(A)p;   //Downcasting   
+    a.a();  
+}  
+if(p instanceof B)
+{  
+    B b=(B)p;   //Downcasting   
+    b.b();  
+}  
+  
+    }  
+}       //end of Call class  
+  
+class Test4{  
+public static void main(String args[])
+{  
+    Instanceof p=new B();  
+    Call c=new Call();  
+    c.invoke(p);  
+    }  
+}