|
二级JAVA第六章辅导：Java串行化 |
|
|
|
www.nanhushi.com 佚名 不详 |
|
1. 串行化例子一
ObjectInputStream和ObjectOutputStream。
public class SerializationDemo {
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
Vector list;
BufferedReader reader = new BufferedReader(new InputStreamReader(
System.in));
System.out.print("Checking for previous serialized list");
try {
FileInputStream fin = new FileInputStream("list.out");
ObjectInputStream oin = new ObjectInputStream(fin);
try {
Object obj = oin.readObject();
list = (Vector) obj;
} catch (ClassCastException e) {
// TODO: handle exception
list = new Vector();
} catch (ClassNotFoundException e){
list = new Vector();
}
fin.close();
} catch (FileNotFoundException e) {
// TODO: handle exception
list = new Vector();
}
for (;;){
System.out.println("Menu :-");
System.out.println("1.. Add item");
System.out.println("2.. Delete item");
System.out.println("3.. List items");
System.out.println("4.. Save and quit");
System.out.println("Choice");
String response = reader.readLine();
int choice = Integer.parseInt(response);
switch (choice) {
case 1:
System.out.print("Enter item : ");
String item = reader.readLine();
list.addElement(item);
break;
case 2:
System.out.print("Enter item : ");
String deadItem = reader.readLine();
list.removeElement(deadItem);
break;
case 3:
for (Enumeration e = list.elements(); e.hasMoreElements(); ){
System.out.println(e.nextElement());
}
break;
case 4:
System.out.println("Saving list");
FileOutputStream fout = new FileOutputStream("list.out");
ObjectOutputStream oout = new ObjectOutputStream(fout);
oout.writeObject(list);
fout.close();
System.exit(0);
break;
default:
break;
}
}
} catch (IOException e) {
// TODO: handle exception
System.out.print("I/O error.");
}
}
}
2.用transient声明需要保密的变量。
在串行化过程中，忽略此类变量。
实现java.io.Serializable 接口。
|
|
|
|
| 文章录入：杜斌 责任编辑：杜斌 |
|
上一篇文章： 二级JAVA第六章辅导：对象串行化
下一篇文章： Java语言的接口与类型安全 |
| 【字体：小 大】【发表评论】【加入收藏】【告诉好友】【打印此文】【关闭窗口】 |
| |
|
