The program below uses IF, ELSE IF and ELSE to test the distribution of random numbers produced by Java:
Java > cat prog49.java
public class prog49
{
public static void main (String args[])
{
int one = 0;
int two = 0;
int three = 0;
int x;
for(x=1;x<=30000;x++)
{
int random1 = (int)(Math.random()*3)+1;
if (random1 == 1)
one++;
else
if (random1 == 2)
two++;
else
if (random1 == 3)
three++;
else
System.out.println("Program error");
}
System.out.println("Number of 1's = " + one);
System.out.println("Number of 2's = " + two);
System.out.println("Number of 3's = " + three);
}
}
Java > javac prog49.java
Java > java prog49
Number of 1's = 9986
Number of 2's = 10053
Number of 3's = 9961
Java >
