import java.util.Random;
/** Generate random integers in a certain range. */
public final class RandomNumbersRange
{
public static final void main(String aArgs[])
{
int START = 1;
int END = 10;
Random random = new Random();
for (int count = 1; count <= 10; ++count)
{
showRandomInteger(START, END, random);
}
}
private static void showRandomInteger(int aStart, int aEnd, Random aRandom){
if ( aStart > aEnd ) {
throw new IllegalArgumentException("Start cannot exceed End.");
}
//get the range, casting to long to avoid overflow problems
long range = (long)aEnd - (long)aStart + 1;
// compute a fraction of the range, 0 <= frac < range
long fraction = (long)(range * aRandom.nextDouble());
int randomNumber = (int)(fraction + aStart);
log("Generated : " + randomNumber);
}
private static void log(String aMessage){
System.out.println(aMessage);
}
}