primethreads.java

java21pro_source 21天学通java2全书源代码

public class PrimeThreads {
    public static void main(String[] arguments) {
        PrimeFinder[] finder = new PrimeFinder[arguments.length];
        for (int i = 0; i < arguments.length; i++) {
            try {
                long count = Long.parseLong(arguments[i]);
                finder[i] = new PrimeFinder(count);
                System.out.println("Looking for prime " + count);
            } catch (NumberFormatException nfe) {
                System.out.println("Error: " + nfe.getMessage());
            }
        }
        boolean complete = false;
        while (!complete) {
            complete = true;
            for (int j = 0; j < finder.length; j++) {
                if (!finder[j].finished)
                    complete = false;
            }    
            try {
                Thread.sleep(1000);
            } catch (InterruptedException ie) {
                // do nothing
            }
        }
        for (int j = 0; j < finder.length; j++) {
            System.out.println("Prime " + finder[j].target
                + " is " + finder[j].prime);
        }    
    }
}