//AdaptRandDoubles.java
package my.eckel;

import java.nio.*;
import java.util.*;

public class AdaptRandDoubles extends RandDoubles implements Readable {
    private int count;
    public AdaptRandDoubles(int count) {
        this.count = count;
    }
    @Override
    public int read(CharBuffer cb) {
        if (count-- == 0)
            return -1;
        String result = Double.toString(next()) + " ";
        cb.append(result);
        return result.length();
    }
    public static void main(String[] args) {
        Scanner s = new Scanner(new AdaptRandDoubles(2));
        while (s.hasNextDouble())
            System.out.println(s.nextDouble() + " ");
    }
}
//------------------------------------------------------------
//RandDoubles.java
package my.eckel;

import java.util.*;

public class RandDoubles {
    private static Random rand = new Random(47);
    public double next() { return rand.nextDouble(); }
    public static void main(String[] args) {
        RandDoubles rd = new RandDoubles();
        for (int i = 0; i < 7; i++)
            System.out.println(rd.next() + " ");
    }
}