Star Trek "Galactic Conquest" Game Contest Submission (Java)

/**
 * Smallest part of the Galaxy is the Sector. 
 * 
 * @author Robert Bettinelli 
 * @version 1.0.0
 */
public class Sector
{
    // Sector Info. 
    private String sector;
    private int sheild;
    private boolean isEnemy;

    /**
     * Sector Defualts to '.' (Empty Space)
     */
    public Sector()
    {
        // initialise instance variables
        sector = ".";
        isEnemy = false;
        sheild = 75;
    }

    /**
     * getSector - Whats in space. 
     * 
     * @return     Sector - Contents of Sector in space.  
     */
    public String getSector()
    {
        return sector;
    }
    
    /**
     * getSheild - Strength of Sheild of Enemy @ Location
     * 
     * @return sheild 
     */
    public int getSheild()
    {
        return sheild;
    }
     /**
     * setSheild - Strength of Sheild of Enemy @ Location
     * 
     * @param sheildValue
     */
    public void setSheild(int sheildValue)
    {
        sheild = sheildValue;
    }
     /**
     * hitSheild - Reduce strength of Sheild of Enemy @ Location
     * 
     * @param hitSheild 
     */
    public void hitSheild(int hitSheild)
    {
        sheild -= hitSheild;
    }
     /**
     * isEnemy - space occupied by Enemy
     * 
     * @return isEnemy
     */
    public boolean isEnemy()
    {
        return isEnemy;
    }
    /**
    * setSector - Change contents of sector in space. 
    * 
    * @param  space   Contents of space. 
    */
    public void setSector(String space)
    {
        sector = space;
    }
}