Loops in method are never executed??

Question

Hello,
I have a short program that I wrote to practice manipulating arrays and to
practice modular design. The source compiles and the program executes,
however the 2 loops in the process() method are never entered, I have tried
do-while loops and the for loop(which was effective for the same program
written with non-modular design). the program will execute the
System.out.println("\nThe array values recieved are:\n");
inside of the process(), but ignores the 2 for loops. I have purposely declared int size; without a value such as int size=0, because I am prompting the user to enter a value for the array and I pass that value into the size of the array.
I have worked and researched for a couple of days on this. I will post the
code below and any help would be greatly appreciated. Thanks, Jeff
import java.io.PrintStream;
import javabook2.*;
public class Tester
public static void main (String [] args)
{  App a;
a = new App();
a.start();
class App//data members of the App class
SimpleInput input;
String tittle;
int size;
double [] rainfall;
public App()
{ //constructor
input = new SimpleInput();
rainfall = new double[size];
public void start()//start method
describe();
process();
public void describe()//prompts the user for info
tittle = SimpleInput.getString("What is your name?\n");
System.out.println("\nNice to meet you " + tittle);
System.out.println("\nWe are now going to get some practice with arrays!");
size = SimpleInput.getInteger("\nPlease enter the size of your array:");
System.out.println("\nThe size array you specified is " + size);
System.out.println("You will be prompted " + size +" times for rainfall values.");
public void process() // array method, declared in the start() method
for( int i =0; i<rainfall.length; i++)
rainfall[i] = SimpleInput.getDouble("\nPlease enter rainfall amount " +(i + 1));
System.out.println("\nThe array values recieved are:\n");
for( int i=0; i<rainfall.length; i++)//.length is used if you dont know the size of aray
System.out.println(rainfall );

Answer 1

Add rainfall = new double[size]; as the first
statement in your process method.Thank you all for your responses. I tried adding the above statement as the first line in the process() method and the program worked perfectly. I learned that I tried to construct the array before I even got the value from the user, and that after I got the value is when I should have just passed that value into the array size. thanks, Jeff