JAVA中的TRANSIENT

Java中的transient，是用于声明序列化的时候不被存储的

示例：博客原文：http://www.blogjava.net/liuganquan/archive/2007/04/22/112591.html

public class Logon implements Serializable {
    private Date date = new Date(); 
    private String username; 
    private transient String password; 
    Logon(String name, String pwd) { 
        username = name; 
        password = pwd; 
    } 
    public String toString() { 
        String pwd = (password == null) ? "(n/a)" : password; 
        return "logon info: \n " + 
        "username: " + username + 
        "\n date: " + date.toString() + 
        "\n password: " + pwd; 
    } 
    public static void main(String[] args) { 
        Logon a = new Logon("Hulk", "myLittlePony"); 
        System.out.println( "logon a = " + a); 
        try { 
            ObjectOutputStream o = new ObjectOutputStream(new FileOutputStream("Logon.out")); 
            o.writeObject(a); 
            o.close(); 
            // Delay: 
            int seconds = 5; 
            long t = System.currentTimeMillis() + seconds * 1000; 
            while(System.currentTimeMillis() < t); 
            // Now get them back: 
            ObjectInputStream in = new ObjectInputStream(new FileInputStream("Logon.out")); 
            System.out.println("Recovering object at " + new Date()); 
            a = (Logon)in.readObject(); 
            System.out.println( "logon a = " + a); 
        } catch(Exception e) { 
            e.printStackTrace(); 
        } 
    } 
}