magento 2 load product by attributes code example

Example 1: magento load product by id

$productId = 20;
$product = Mage::getModel('catalog/product')->load($productId);

Example 2: Magento2: How to load product by id

<?php
    namespace Test\Module\Block;
    use Magento\Catalog\Api\ProductRepositoryInterface;
    class Product extends \Magento\Framework\View\Element\Template
     {
          protected $productRepository; 
          protected $_storeManager; 

          public function __construct(
            \Magento\Framework\App\Action\Context $context,
            ProductRepositoryInterface $productRepository
          ) {
              parent::__construct($context);

              $this->productRepository = $productRepository;
          }
          public function getProduct()
          {

              $productId=1;
              return $product = $this->productRepository->getById($productId);
          }
      }