Helppp!!! PLEASE!!

Question

i want to write a program...that simulates a machine working...it gives to the client, coofee, tea and chocolate..and gives change, money put in the machine must be same price or > than the price of the product...the machine has 3 compartiments, one has products, other ingredientes and the other has the compartiments were the change and money is keeped.
I will call compartiments
C1- Product given to the client as a 4 products: Cofee 2 types..Strong Coffee without milk,coffee with milk, chocolate, tea
C2- Ingredientes : Milk, Sugar, Cofee, Tea, Chocolate, Water
C3- Money: 5 types of coins 100 of each..500 in total...euros
2�,1�,0.5�,0.2�,0.1�
Strong Cofee :1dl of water e 10g os cofee � Price 0,3�;
Cofee with milk:0,5 dl of water, 0,5 dl of Millk e 10g of cofee Price:0,4�;
Tea :(2dl of water e 20g of tea) �Price 0,4�;
Chocolate : 2dl of milk 40g of chocolate Price� 0,5�.
Total of ingredients in compartment:
water and milk (size in decilitres), both in maximimum quantaties of 5 litres;
cofee and tea and chocolate (sized in grams), all in maximum quantatie of 2Kg;
 there is a adicional ingrediente that is sugar (sized or given in grams), with maximum quantatie of 1Kg.

Answer 1

Listen, that's not the way it works around here.
People won't do your homework for you.
Take your time thinking about the problem.
Collect ideas on how to solve your problem using OO design.
Start coding.
Then, if you come across problems while coding, paste sample code here and ask specific questions, and chances are good you will get a lot of help really fast.
It's generally a good idea to aquire a basic level of knowledge about Java first:
http://java.sun.com/j2se/1.4.1/docs/api/
http://developer.java.sun.com/developer/onlineTraining/
or read a book on Java (I recommend Deitel & Deitel for beginners).
BTW - start small ... try printing 'Hello World!' to the screen, increase complexity little by little ...