As close as one can get to a Java typedef. That is, wrapping a type. Lots of boilerplate code for something that could be so short and concise.

FirstName.java

/**
 * A first name.
 * <p>
 * In other programming languages, you would be able to write something like
 * <code>
 * typedef FirstName String;
 * </code>
 */
public class FirstName {
  private String firstName;
  
  public FirstName(String firstName) {
    this.firstName = firstName;
  }
  
  public String value() {
    return firstName;
  }
}