Creating Program That Will Estimate Child Height Based On Height Of Parents
Jun 19, 2014
I am trying to create a program that will estimate a child height based on the height of the parents. It should ask the user to enter a String representing the gender, so m or M for a male and f or F for a female. The program must handle both upper or lower case gender entries. I need it to ask the user for the height of both parents in two parts:
1. for Feet and store in an int variable.
2. for inches and store and int variable.
So for example if the father is 6' 2'', the user would enter 6 when asked for feet and 2 when asked for inches. Convert the height of the each parent to inches. hint 12" in one foot.
Apply the following formulas based on gender (must use an if statement(s)):
Hmale_child = ((Hmother * 13/12) + Hfather)/2
Hfemale_child = ((Hfather * 13/12) + Hmother)/2
I cannot figure out what is missing from my code
<import java.util.Scanner;
public class ChildHeight
{
public static void main(String[] args) {
Scanner scannerObject = new Scanner(System.in);
String gender;
String male;
String female;
[Code] ....
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Sep 29, 2014
Below mentioned classes, create object system accept in both way so what is it significant.
============
ABC obj = new Test();
Test obj = new Test();
==================
--file ABC class
class ABC{ public void disp() { System.out.println("disp() method of parent class"); }
public void abc() { System.out.println("abc() method of parent class"); } }
--file Test class
class Test extends ABC{ public void disp(){ System.out.println("disp() method of Child class"); }
public void xyz(){ System.out.println("xyz() method of Child class"); }
public static void main( String args[]) { //Parent class reference to child class object
ABC obj = new Test(); obj.disp(); obj.abc(); }}
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private static final int HEIGHT = 20;
[code]....
The problem arises at the portion of the code that says
private int Y = game.getHeight() - 70;
I am not actually getting any compiler errors, but when I try to run the program, the command prompt pops up with this message:
Exception in thread "main" java.lang.NullPointerException
at Racquet.<init>(Racquet.java:19)
at Game.<init>(Game.java:10)
at Game.main(game.java:58)
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[Code] .....
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[Code] ...
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[Code] ....
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{
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[code]....
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[Code] ....
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