use of instanceof operator

mradulvarshney · web-flow · commit cfc946b3e393 · 2021-11-11T19:12:49.000+05:30
diff --git a/InstrumentMain.java b/InstrumentMain.java
@@ -0,0 +1,64 @@
+abstract class Instrument
+{
+    public abstract void Play();
+}
+    class Piano extends Instrument
+    {
+        public void Play()
+        {
+            System.out.println("Piano is playing tan tan tan tan");
+        }
+    }
+
+    class Flute extends Instrument
+    {
+        public void Play()
+        {
+            System.out.println("Flute is playing toot toot toot toot ");
+        }
+    }
+
+    class Guitar extends Instrument
+    {
+        public void Play()
+        {
+            System.out.println("Guitar is playing tin tin tin");
+        }
+    }
+
+    class InstrumentMain {
+
+        public static void main(String args[]) {
+            Instrument A[] = new Instrument[10];
+            for (int i = 0; i< 10; i++) {
+                switch (i % 3)
+                {
+                    case 0: {
+                        A[i] = new Piano();
+                        break;
+                    }
+                    case 1: {
+                        A[i] = new Flute();
+                        break;
+                    }
+                    case 2: {
+                        A[i] = new Guitar();
+                        break;
+                    }
+                }
+            }
+            for (int i = 0; i < 10; i++) {
+                System.out.println((i + 1));
+                A[i].Play();
+                if (A[i] instanceof Piano) {
+                    System.out.println("Piano");
+                }
+                if (A[i] instanceof Flute) {
+                    System.out.println("Flute");
+                }
+                if (A[i] instanceof Guitar) {
+                    System.out.println("Guitar");
+                }
+            }
+        }
+    }
