CS 101 NOtes 11/11/10

Arrays - a variable that contain multiple
        data values 

Arrays are created as follows:

   int arrName[];

The square brackets indicate this is an array.

   arrName = new int [100];

The above code allocated memory for 100 integers

Most often people declare arrays as follows:

   int arrName2[] = new int [500];

For our SoundSample arrays, we create the array
   using the getSamples() method of the Sound class.

   SoundSample sampArr1[] = s1.getSamples();

   where s1 is a Sound object that already exists.

You may see arrays in JAVA create as:

    int[] arrName3;

After the memroy is allocated, to access the 
values in the array, we need to use subscripts.

      arrName [3] 

The valid subscript values range from zero to
    the length of the array minus 1

 The array:
      int arrName4[] = new int[100];
     has length of 100
     has valid subscribt from 0 to 99

for (int i = 0 ; i < arrName4.length ; i++)
    arrName4[i] = i * 2;

for (int i = 0 ; i < arrName4.length ; i++)
    arrName4[i] = arrName4[i] * 10;

for (int i = 0 ; i < arrName4.length ; i++)
    System.out.println ("arrName4[" + i + "] : " 
                        + arrName4[i]);