public String first(String text) {
return text.substring(0, 1);
}
 
@EventHandler(priority = EventPriority.HIGHEST)
public void blockPlace(BlockPlaceEvent bpe)
{
    // Block placed by player
    Block block = bpe.getBlock();
 
    // Get the blocks material relative to the block placed by the player
    Material main = block.getType();
    Material up1 = block.getRelative(BlockFace.UP, 1).getType();
    Material up2 = block.getRelative(BlockFace.UP, 2).getType();
    Material down1 = block.getRelative(BlockFace.DOWN, 1).getType();
    Material down2 = block.getRelative(BlockFace.DOWN, 2).getType();
 
    // Concatenate the first letters of each of the materials
    String materialFirstLetters = first(up1.toString()) + first(up2.toString()) +
                                  first(main.toString()) + first(down1.toString()) +
                                  first(down2.toString());
 
    // Regex pattern
    String regex = "DIJ..|I.DJ.|..IDJ";
 
    // Check if the first letters of the materials match the regex pattern
    if (materialFirstLetters.matches(regex))
    {
        System.out.println("Antenna Created");
    }
}

For my final year project I had to build an n-tier web application from scratch using design patterns such as MVC, Command, Factory, Service, and DAO and technologies such as Java, JSP, JSTL, Tomcat, JUnit, XML, HTML/CSS, Javascript, MySQL.

Homepage. Displays featured books, latest books, newest members, and recent reviews.

All Books. Displays list of books which can be sorted by Title, Price, Rating, or Release Date.

Book (top). Shows the books title, image, rating and

Book (bottom). Shows similar themed books. Reviews by the users which can be filtered.

Profile. Shows profile of user and their recent reviews.