package model;import Exception.*;import java.io.*;public abstract class Account implements Serializable, Cloneable {	private long id;	private String password;	private String name;	private String personId;	private String email;	private double balance;	public Account() {	}	public Account(String password, String name, String personId, String email) {		this();		this.id = getNextId();		this.password = password;		this.name = name;		this.personId = personId;		this.email = email;	}	private static synchronized long getNextId() {		/*		 * 從文件里讀取一個id值		 */		DataInputStream in = null;		long sid = 10000;		try {			// FileInputStream fin=new			// FileInputStream("/home/soft01/workspace/mybam/Data/id.txt");			FileInputStream fin = new FileInputStream(					"D:\\sh_workspace\\Bank\\Data\\id.txt");			in = new DataInputStream(fin);			sid = in.readLong();		} catch (FileNotFoundException e) {		} catch (IOException e) {		} finally {			try {				if (in != null)					in.close();			} catch (IOException e) {			}		}		sid++;		/*		 * 把新的id值寫回文件		 */		DataOutputStream out = null;		try {			// FileOutputStream fou=new			// FileOutputStream("/home/soft01/workspace/mybam/Data/id.txt");			FileOutputStream fou = new FileOutputStream(					"D:\\sh_workspace\\Bank\\Data\\id.txt");			out = new DataOutputStream(fou);			out.writeLong(sid);		} catch (FileNotFoundException e) {		} catch (IOException e) {		} finally {			try {				if (out != null)					out.close();			} catch (IOException e) {			}		}		return sid;	}	public long getId() {		return id;	}	public double getBalance() {		return balance;	}	public void setBalance(double balance) {		this.balance = balance;	}	public String getEmail() {		return email;	}	public String getName() {		return name;	}	public String getPassword() {		return password;	}	public String getPersonId() {		return personId;	}	/*	 * 為什么存款方法deposit()提供實現,而把取款方法withdraw()設計成抽象方法?	 */	public final synchronized void deposit(double money) {		this.balance = this.balance + money;	}	public abstract void withdraw(double money)			throws BusinessException.BalanceNotEnoughException;	public String toString() {		return this.getName() + "\t" + this.getPersonId() + "\t"				+ this.getEmail();	}	/*	 * 	 * @see java.lang.Object#equals(java.lang.Object)	 */	@Override	public boolean equals(Object o) {		if (this == o)			return true;		if (o == null)			return false;		if (this.getClass() != o.getClass())			return false;		Account c = (Account) o;		boolean flag = true;		if (!(this.password.equals(c.password)))			flag = false;		else if (!(this.name.equals(c.name)))			flag = false;		else if (!(this.personId.equals(c.personId)))			flag = false;		else if (!(this.email.equals(c.email)))			flag = false;		else if (this.getBalance() != c.getBalance())			flag = false;		return flag;	}		@Override	public Object clone() {		try {			return super.clone();		} catch (CloneNotSupportedException e) {			e.printStackTrace();			return null;		}	}	@Override	public int hashCode() {				return new Long(id).hashCode()^password.hashCode()^name.hashCode()		       ^personId.hashCode()^email.hashCode()^new Double(balance).hashCode();	}	}