Answer to problem 64:
package com.company;

public class Point
{

    private int x;
    private int y;
    public Point() //Default constructor
    {
        x=0;
        y=0;
    }
    public Point(int x1, int y1) //Default constructor
    {
        x = x1;
        y = y1;
    }
    public void setX(int x1)
    {
        x = x1;
    }
    public void setY(int y1)
    {
        y = y1;
    }
    public int getX()
    {
        return x;
    }
    public int getY()
    {
        return y;
    }
    public void PrintPoint()
    {
        System.out.println("Point p1 = ("+x+","+y+")");
    }
    public double DistanceToOrigin()
    {
        return (Math.sqrt(x*x+y*y));
    }
    public void translatePoint(int dx, int dy)
    {
        x = x + dx;
        y = y + dy;
    }

}















package com.company;
import java.text.DecimalFormat;
public class ClientPoint {
    public static void main (String[] args){

        Point p1 = new Point();

        Point p2 = new Point();

        DecimalFormat distanceFormat = new DecimalFormat("#0.00");
        System.out.println(" The distance is "+distanceFormat.format(p2.DistanceToOrigin()));

        p1.PrintPoint();

        double distance = p1.DistanceToOrigin();
        System.out.println(distance);

        p2.setX(-3);
        Point p3 = new Point();
        p3.setX(p2.getX()); // set value of p3 to p2.

        p3.translatePoint(3,4);
        p3.PrintPoint();

    }
}



Answer to problem 67.
package com.company;
/*
   Arush Adabala
   1/15/2019
   Reads and states sentence types
 */
import java.util.*;
import java.lang.*;

public class Decrypter {
    public static void main(String[] args)
    {
        Scanner input = new Scanner(System.in);
        System.out.println("Please type a string with nine characters or more below");
        String sentence = input.next();

        char character1 = sentence.charAt(0); // reads first char
        char character2 = sentence.charAt(2); // reads third char
        char character3 = sentence.charAt(4); // reads fifth char
        char character4 = sentence.charAt(6); // reads seventh char
        char character5 = sentence.charAt(8); // reads ninth char
        int stringlength = sentence.length();

        if(stringlength>=9){
            System.out.println(character1+character2+character3+character4+character5);
        }
        else{
            System.out.println("invalid input.");
        }
    }
}