How to display post from a category in wordpress?

How to display post from a category in wordpress? 

Simply copy and paste the code in your php file and change the category id which one you want to show.

<h4>Latest Post</h4>
          <ul class="list-blog">
 <?php
            query_posts(array('category__in' => array(4),'posts_per_page' => 4));
            while(have_posts()) { the_post();
            ?>
            <li>
            <?php
            $post_thumbnail_id = get_post_thumbnail_id($post->ID);
          
            $post_thumbnail_url = wp_get_attachment_url( $post_thumbnail_id );
            if($post_thumbnail_url!='')
            {
                $post_thumbnail_url = $post_thumbnail_url;
            }else
            {
                $post_thumbnail_url = get_template_directory_uri().'/img/noimg.jpg';
            }
            ?>
             <img width="60" height="60" alt="" class="img-square" src="<?php echo $post_thumbnail_url;?>">
             <div class="title">
                <a href="<?=get_permalink($post->ID)?>" rel="bookmark" title="<?php the_title(); ?>"><?php the_title(); ?></a><br>
                <span class="date time"><?php the_time(__ ('F j, Y')) ?></span>               
              </div>
            </li>
            <?php } wp_reset_postdata();?>   
          </ul>