FileOutputStream 与FileInputStream

 

public static void saveObjects(ArrayList listData, String fileName) {
FileOutputStream os = new FileOutputStream("fileName.dat");
ObjectOutputStream oos = new ObjectOutputStream(os);
oos.writeObject(listData);
}
public static ArrayList readObjects(String fileName) {
ArrayList listDat;
Object obj;
try{
FileInputStream is = new FileInputStream("fileName.dat");
ObjectInputStream ois = new ObjectInputStream(is);
obj = ois.readObject();
}catch (Exception e) {
e.printStackTrace();
}