how to use Random () to create circles in a frame

You can generate numbers in any range by using code like this:

// Do this once

Random rnd = new java.util.Random();

// Use rnd to get random numbers in a given range (starting from zero):

int rn1 = rnd.nextInt(50); // number in range 0..49

int rn2 = rnd.nextInt(25); // number in range 0..24

// And you can modify the range like this:

int rn3 = rnd.nextInt(50) + 50; // number in range 50..99

int rn4 = rnd.nextInt(25) + 1; // number in range 1..25

int rn5 = rnd.nextInt(201) - 100; // number in range -100..100

TimRyanNZa at 2007-7-12 1:31:33 >

yourRandom.nextInt(bound);

will return an integer between 0 and the bound.

For example, yourRandom.nextInt(5) will return something between 0 (inclusive) and 5 (exclusive)

if you want to have something between "x" (not being 0) and "y", y being > x then it's :

x+yourRandom.nextInt(y-x);

for example, to have something between 3 (inclusive) and 7 (exclusive):

3+yourRandom(7-3)

EDIT: sorry for the dup ^^

calvino_inda at 2007-7-12 1:31:33 >