35 lines
968 B
Java
35 lines
968 B
Java
// collectionsindepth/RandomBounds.java
|
|
// (c)2016 MindView LLC: see Copyright.txt
|
|
// We make no guarantees that this code is fit for any purpose.
|
|
// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
|
|
// Does Math.random() produce 0.0 and 1.0?
|
|
// {java RandomBounds lower}
|
|
import onjava.*;
|
|
|
|
public class RandomBounds {
|
|
static void usage() {
|
|
System.out.println("Usage:");
|
|
System.out.println("\tRandomBounds lower");
|
|
System.out.println("\tRandomBounds upper");
|
|
System.exit(1);
|
|
}
|
|
public static void main(String[] args) {
|
|
if(args.length != 1) usage();
|
|
new TimedAbort(3);
|
|
switch(args[0]) {
|
|
case "lower":
|
|
while(Math.random() != 0.0)
|
|
; // Keep trying
|
|
System.out.println("Produced 0.0!");
|
|
break;
|
|
case "upper":
|
|
while(Math.random() != 1.0)
|
|
; // Keep trying
|
|
System.out.println("Produced 1.0!");
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
}
|