How do I turn this for loop into a for each loop?

[Mary Seelye]

public void increaseVolume2()
  {
    SoundSample[] sampleArray = this.getSamples();
    SoundSample sample = null;
    int value = 0;
   
    //loop through all the samples in the array
    for (int i = 0; i < sampleArray.length; i++)
    {
      sample = sampleArray[i];
      value = sample.getValue();
      sample.setValue((int) (value * 2));
    
    }
  }

[Monomachus]

Well I found using google this link:
Using Foreach Loops in J2SE 1.5

So you need to implement Iterable interface and create an Iterator method for your class. In your case it should be SoundSample.

class Catalog implements Iterable<Product> {
   private List<Product> products = new ArrayList<Product>();
   void add(Product product) {
      products.add(product);
   }
   
   public Iterator<Product> iterator() {
      return products.iterator();
   }
}

Catalog catalog = new Catalog();

catalog.add(new Product("1", "pinto", new BigDecimal("4.99")));
catalog.add(new Product("2", "flounder", new BigDecimal("64.88")));
catalog.add(new Product("2", "cucumber", new BigDecimal("2.01")));

for (Product product: catalog)
   product.discount(new BigDecimal("0.1"));
   
for (Product product: catalog)
   System.out.println(product);

[Mary Seelye]

I'm not quite sure what you're doing here.
I need it to stay as close to what I have as possible.

[Mary Seelye]

I think I figured it out.

This is what I have now and it works just fine:

public void increaseVolume3()
  {
    SoundSample[] sampleArray = this.getSamples();
    int value = 0;
   
    //loop through all the samples in the array
       for (SoundSample sample : sampleArray)
    {
      
      value = sample.getValue();
      sample.setValue((int) (value * 2));
    
    }
  }