setting the lower limit for random number function

How to set the lower limit for this

<%= (int) (Math.random() * 60) %>

Now it give number from 0 to 60 if i want number 开发者_高级运维in between 50 to 60 so how to set it. Thanks

    <%= (int) (Math.random() * 10 + 50) %>

That is,

   <%= (int) (Math.random() * (Max-Min) + Min) %>

Better use java.util.Random.

Random random = new Random();
// ...
int i = 50 + random.nextInt(11);

(note that nextInt() is exclusive)

Unrelated to the concrete problem, Java code should be placed in Java classes rather than JSP files.

(Math.random() * 10) will give you a random number between 0 and 10. I'll leave it up to you to figure out how to translate that to between 50 and 60...