Data commit

Task/Object-serialization/Kotlin/object-serialization.kotlin

@@ -0,0 +1,57 @@
+// version 1.2.0
+
+import java.io.*
+
+open class Entity(val name: String = "Entity"): Serializable {
+    override fun toString() = name
+
+    companion object {
+        val serialVersionUID = 3504465751164822571L
+    }
+}
+
+class Person(name: String = "Brian"): Entity(name), Serializable {
+    companion object {
+        val serialVersionUID = -9170445713373959735L
+    }
+}
+
+fun main(args: Array<String>) {
+    val instance1 = Person()
+    println(instance1)
+
+    val instance2 = Entity()
+    println(instance2)
+
+    // serialize
+    try {
+        val out = ObjectOutputStream(FileOutputStream("objects.dat"))
+        out.writeObject(instance1)
+        out.writeObject(instance2)
+        out.close()
+        println("Serialized...")
+    }
+    catch (e: IOException) {
+        println("Error occurred whilst serializing")
+        System.exit(1)
+    }
+
+    // deserialize
+    try {
+        val inp = ObjectInputStream(FileInputStream("objects.dat"))
+        val readObject1 = inp.readObject()
+        val readObject2 = inp.readObject()
+        inp.close()
+        println("Deserialized...")
+        println(readObject1)
+        println(readObject2)
+    }
+    catch (e: IOException) {
+        println("Error occurred whilst deserializing")
+        System.exit(1)
+    }
+    catch (e: ClassNotFoundException) {
+        println("Unknown class for deserialized object")
+        System.exit(1)
+    }
+}