ChessMove (Upnp application)

package com.loloof64.j2se.cling_chess_exp;

public class ChessMove {

    public int startFile, startRank, endFile, endRank;

    public ChessMove(){

    }

    public ChessMove(int startFile, int startRank, int endFile, int endRank) {
        this.startFile = startFile;
        this.startRank = startRank;
        this.endFile = endFile;
        this.endRank = endRank;
    }

    public int packValue(){
        return startFile << 24 | startRank << 16 | endFile << 8 | endRank;
    }

    public static ChessMove unpack(int packedValue){
        int eRank = packedValue & 0xFF;
        packedValue >>= 8;
        int eFile = packedValue & 0xFF;
        packedValue >>= 8;
        int sRank = packedValue & 0xFF;
        packedValue >>= 8;
        int sFile = packedValue;
        return new ChessMove(sFile, sRank, eFile, eRank);
    }

    public String toString(){
        return String.format("ChessMove[%d %d %d %d]", startFile, startRank, endFile, endRank);
    }

}