www.pudn.com > Java_UML_library.rar > ObjId.java

// 
//  Unified Library Application 
//  Case study in Unified Modeling Language Toolkit 
// 
//  ObjId.java: represents a object id, a class that works as 
//  "pointer" to any persistent object in the system. 
// 
//  Copyright (c) 1998 John Wiley & Sons, Inc. All rights reserved. 
//  Reproduction or translations of this work beyond that permitted 
//  in Section 117 of the 1976 United States Copyright Act without 
//  the express written permission of the copyright owner is unlawful. 
//  Requests for further information should be addressed to Permissions 
//  Department, John Wiley & Sons, Inc. The purchaser may make back-up 
//  copies for his/her own use only and not for distribution or resale. 
//  The Publisher assumes no responsibility for errors, omissions, or 
//  damages, caused by the use of these programs of from the use of the 
//  information contained herein. 
 
package util; 
 
import java.io.*; 
 
public class ObjId 
{ 
    private String classname; 
    private int number; 
    public ObjId() 
    { 
        classname = "NotSet"; 
        number = 0; 
    } 
    public ObjId(String name, int num) 
    { 
        classname = name; 
        number = num; 
    } 
    public String getName() 
    { 
        return classname; 
    } 
    public int getId() 
    { 
        return number; 
    } 
    public boolean equals(Object obj) 
    { 
        if (!obj.getClass().getName().equals("util.ObjId")) 
            return false; 
        ObjId comp = (ObjId) obj; 
        if (classname.equals(comp.classname) && 
            number == comp.number) 
            return true; 
        else 
            return false; 
    } 
    public void write(RandomAccessFile out) 
        throws IOException 
    { 
        out.writeUTF(classname); 
        out.writeInt(number); 
    } 
    public void read(RandomAccessFile in) 
        throws IOException 
    { 
        classname = in.readUTF(); 
        number = in.readInt(); 
    } 
}