Create InterfaceDemo.java

premph · web-flow · commit 05cd52764c33 · 2018-06-27T15:00:30.000+05:30
diff --git a/Abstract and Interface/InterfaceDemo.java b/Abstract and Interface/InterfaceDemo.java
@@ -0,0 +1,29 @@
+interface InterfaceDemo
+{
+    // abstract method
+    public void square();
+ 
+    // default method
+    default void show()
+    {
+      System.out.println("This is a defult method");
+    }
+}
+ 
+class TestClass implements InterfaceDemo
+{
+    // implementation of square abstract method
+    public void square(int a)
+    {
+        System.out.println(a*a);
+    }
+ 
+    public static void main(String args[])
+    {
+        TestClass d = new TestClass();
+        d.square(4);
+ 
+        // default method executed
+        d.show();
+    }
+}
