/*
 * IPv4address.java
 *
 * Created on September 16, 2003, 6:00 PM
 */

/**
 *
 * @author  Tazeen
 */
import java.lang.Integer;

public class IPv4address implements address {
    
    private int a = 0;
    
    private int b = 0;
    
    private int c = 0;
    
    private int d = 0;
    
    /** Creates a new instance of IPv4address */
    public IPv4address() {
    }
    
    public IPv4address(int w, int x, int y, int z) throws addressOutOfRangeException
    {
        if (!inRange(w))
            throw new addressOutOfRangeException(Integer.toString(w)+" is not within 0 and 255");
        else if (!inRange(x))
            throw new addressOutOfRangeException(Integer.toString(x)+" is not within 0 and 255");
        else if (!inRange(y))
            throw new addressOutOfRangeException(Integer.toString(y)+" is not within 0 and 255");
        else if (!inRange(z))
            throw new addressOutOfRangeException(Integer.toString(z)+" is not within 0 and 255");
        else 
        {
            a = w;
            b = x;
            c = y;
            z = z;
        }
    }
    
    public String toString() {
   
        return Integer.toString(a) + "." + Integer.toString(b) + "." + Integer.toString(c) + "." + Integer.toString(d);
    }
    
    public int getA() { 
        return a;
    }
    
    public int getB() {
        return b;
    }
    
    public int getC() {
        return c;
    }
    
    public int getD() {
        return d;
    }
    
    public boolean equals(IPv4address a1) {
        
        if ((a1.getA() == getA()) &&
            (a1.getB() == getB()) &&
            (a1.getC() == getC()) &&
            (a1.getD() == getD()))
            return true;
        else
            return false;
    }
    
    private boolean inRange(int x)
    {
        return (x>=0) && (x<=255);
    }
}