Properly formatted code from http://stackoverflow.com/questions/9560319/string-in-java-class

User.java

public class User {
	public String[] usernames;

	public User(String[] names) {
		usernames = names;
	}

	public String[] getUsernames() {
		return usernames;
	}

	public void setUsernames(String[] usernames) {
		this.usernames = usernames;
	}
}