java - Efficiency of Random Method -

i read not want make new instances when unnecessary. not sure if understand saying. problem repeat of in logcat:

08-09 17:12:11.300: d/dalvikvm(19620): gc_for_alloc freed 2281k, 23% free 9365k/12048k, paused 12ms, total 12ms

so better have method:

public int rand(int i) {     int rand = new random().nextint(i);     return rand; }

than have method:

public int rand(int i) {     return new random().nextint(i); }

if calling rand() lot? why or why not? helping newb!

do this:

class ... {    private final random dice = new random();    public int rand(int i) {     return dice.nextint(i);   }  }

that way, calling new random() once, instead of every time generate number.

Shashtri