point.java

来自「Program helping you to remember the rout」· Java 代码 · 共 37 行

public class Point { 
    String description;
    int    time;
    int    direction;
    int    tripId;
    int    id;

    byte[] pack() { 
        byte[] desc = Converter.packString(description);
        byte[] buf = new byte[desc.length + 9];
        Converter.packInt(buf, 0, tripId);
        Converter.packInt(buf, 4, time);
        buf[8] = (byte)direction;
        System.arraycopy(desc, 0, buf, 9, desc.length);
        return buf;
    }

    void unpack(byte[] buf) {        
        tripId = Converter.unpackInt(buf, 0);
        time = Converter.unpackInt(buf, 4);
        direction = buf[8];
        description = Converter.unpackString(buf, 9, buf.length - 9);
    }

    Point(int id, byte[] buf) { 
        this.id = id;
        unpack(buf);
    }

    Point(int tripId, int direction, String description, int time) { 
        this.tripId = tripId;
        this.direction = direction;
        this.description = description;
        this.time = time;
    }        
}