HTMLCreativeAsset htmlCreativeAsset = new MobileDisplayCreativeAsset();
htmlCreativeAsset.setAssetFilename(mobileAssetFileName);
mobileDisplayCreative.setCreativeAssets(new HTMLCreativeAsset[]{htmlCreativeAsset});
// Save the mobile display creative.
CreativeSaveResult creativeSaveResult = service.saveCreative(mobileDisplayCreative,
campaignId);
// Display the new creative ID.
System.out.printf("Mobile display creative with ID \"%s\" was created.%n",
creativeSaveResult.getId());
}