You work as an application developer at Certkiller .com. You have recently created a multithreaded application to manage Certkiller .com’s inventory system. 
The fulfillment task has to be executed on a regular basis， while other tasks are performed in the application. The task does not need any input to start. 
You are required to create and start the fulfillment thread using the appropriate code.What code should you use？（）

You work as an application developer at Certkiller .com. Certkiller .com has asked you to create a multi-threaded application， which executes a critical database 
backup operation on an hourly basis. You define this operation with the following code： 
public void BackupDB （） { 
//Implementation code } 
You then create a Thread object for the purpose of invoking this method. 
You need to ensure that the thread is scheduled for execution before any other thread at runtime.What should you do？（）