Main:

import java.util.Scanner;

public class Main {
	public static void main(String[] meow) {
		Scanner scan = new Scanner(System.in);
		Double d = scan.nextDouble();   // User must enter data
		PowerGenerator pg = new PowerGenerator(d);
		System.out.println(pg.next());  // 1.0
		System.out.println(pg.next());  
		System.out.println(pg.next());  
		System.out.println(pg.next());  
		System.out.println(pg.next());
		System.out.println(pg.next());
		System.out.println(pg.next());  // d^6
	}
}

PowerGenerator:

public class PowerGenerator {
	private double factor;
	private int exponent;
	private double result = 1;
	
	public PowerGenerator(double aFactor) {
		factor = aFactor;
		exponent = 0;
	}
	
	public double next() {
		// Three different examples for writing this; two are
		// commented out
		
//		double returnValue = result;  
//		result = result*factor;		  
//		return returnValue;			  
		
		double returnValue = Math.pow(factor, exponent);  
		exponent = exponent + 1;		  
		return returnValue;			  
		
//		return Math.pow(factor, exponent++);
	}
}