Data update

Task/Singleton/Java/singleton-4.java

@@ -0,0 +1,20 @@
+class Singleton
+{
+    private static Singleton myInstance;
+    public static Singleton getInstance()
+    {
+        if (myInstance == null)
+        {
+            myInstance = new Singleton();
+        }
+
+        return myInstance;
+    }
+
+    protected Singleton()
+    {
+        // Constructor code goes here.
+    }
+
+    // Any other methods
+}