Interface Workflow

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Multiple Threads

Be careful !!!!

Computers with strong CPU and huge memory will cause programmers use multiple threads to speed their programs. Multiple thread is necessary.

• put some calculation to the background
• put an unsave thread to a separate thread 

Creating threads:

import java.lang.*;public class Counter extends Thread
{                     
        public void run()                      
        {             
        ....           
        }

}
or

import java.lang.*;
public class Counter implements Runnable
{
        Thread T;                       
        public void run()                      
        {                             
        ....           
        }
}
Be careful !!!

Be careful of your multiple threads!!!!   Sometimes, they may cause problem, especially in GUI.

Example:

When pop up a dialog box, and change the screen orientation, the screen will no respone. After review and chang some multiple threads, the bug is disappeared.

 Reason:

The dialog box will stop all the threads, some GUI threads also will stop. This causes the screen no respone.

Conclusion:

Use multiple threads is necessary, but be careful.