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Utility classes, APIs and tools for Java

There is a newer version: 0.99-alpha1

package net.sf.javagimmicks.util;

/**
 * An implementation of {@link Supplier} that creates the instance when it is
 * requested for the first time using an underlying {@link Supplier} which is
 * commonly known as "lazy loading" pattern.
 * 
 * @param 
 *           the type of object the container can carry
 */
public class LazySupplier extends AbstractLazySupplier
{
   private E _instance;

   /**
    * Creates a new instance for the given {@link Supplier}
    * 
    * @param supplier
    *           the {@link Supplier} to use for creating the instance
    */
   public LazySupplier(final Supplier supplier)
   {
      super(supplier);
   }

   @Override
   protected E getInstance()
   {
      return _instance;
   }

   @Override
   protected void setInstance(final E instance)
   {
      _instance = instance;
   }
}