Now I want to use java to realize a program similar to random number extraction.

You don't need six threads, one is enough, and a loop will do.

Similar js

& lt! DOCTYPE? HTML & gt

& lthtml & gt

& lthead & gt

& ltmeta? charset="UTF-8 "? /& gt;

& lttitle & gt model? PAGE & lt/title & gt;

& lt style? type="text/css " >

*{

Margin:? 0;

Fill:? 0;

}

Table? {

Margin:? 0? Automatic;

Border:? 1px? Solid? Black;

Border folding:? Collapse;

Border:? 1px? Solid? Black;

}

td? {

Border:? 1px? Solid? Black;

}

# Lottery? {

Background color:? Red;

}

& lt/style & gt;

& lt script? type = " text/JavaScript " & gt;

var? Painting? =

{

Timer? :? Empty,

Sleep? :? 60,

rnd? :? '000000000',

Initialize? :? Function? ()

{

var? Lottery? =? This, the lottery? =? document.getElementById? ("lucky draw");

var? tr? =? Lottery. insertRow? (0);

var? arr? =? This. arr? =? This. rnd.split? ('');

For what? (? var? Me? =? 0; ? Me? & lt? Array length; ? i++)

{

var? td? =? tr.insertCell? (transmission unit length);

td.style.textAlign? =? Center';

var? n? =? document.createTextNode? (arr[I]);

TD . appendchild(n);

}

var? Cells? =? lottery . rows[lottery . rows . length? -? 1]. Cell [0];

cell.style.textAlign? =? Center';

cell.colSpan? =? Array length;

cell.children[0]。 onclick? =? this.start

cell.children[ 1]。 onclick? =? this.stop

},

Start? :? Function? ()

{

What if? (! Drawing. Timer)

{

var? Row? =? Draw. Lottery. Line [0];

Painting. Timer? =? setInterval? (function? ()

{

For what? (? var? Me? =? 0; ? Me? & lt? draw . arr . length; ? i++)

{

row.cells[i]。 Child node [0]. nodeValue? =? mathmatics Floor? (Math.random? ()? *? 10);

}

},? draw . sleep);

}

},

Stop? :? Function? ()

{

What if? (! ! Drawing. Timer)

{

clearInterval? (draw . timer);

Painting. Timer? =? null

}

}

};

window.onload? =? Function? ()

{

draw.init? ();

}

& lt/script & gt;

& lt/head & gt;

& ltbody & gt

& lt table? Id= "lottery ticket">

& lttr & gt

& lttd & gt

& lt input? type="button "? Value= "Start the lottery"? /& gt; ?

& lt input? type="button "? Value= "Stop the lottery"? /& gt;

& lt/TD & gt;

& lt/tr & gt;

& lt/table & gt;

& lt/body & gt;

& lt/html & gt;