make new thread for send mail Id in java

I am working in online application, in which there is facility of creating group. I want facility to send mail to all group user when any activity done in group. like comments , start new discussion etc.开发者_如何学Python But problem is that . if any small activity i send thorusand of mail at run time. it slow the performance.

For that i am thinking to create new independent thread. to send mail which send mail to thousand of user and main thead with out any problem come to group page.

How i will make new thread in class. thanks in advances.

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new Thread(new Runnable() {
    @Override
    public void run() {
       // do stuff here
    }
}).start();

This is the accepted Java pre-1.5 way. You can take a look at the java.util.concurrent package and the executor framework.