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我已经序列化一个ArrayList并将其存储到扩展名为.ser的文件中。我如何反序列化对象并将其存储回ArrayList中。我收到错误Note: Hw5b.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.
如何反序列化ArrayList中的对象<String[]> in java
//Serializing Object
ArrayList<String[]> list = new ArrayList<String []>();
FileOutputStream fout = new FileOutputStream("movie-matrix2.ser");
ObjectOutputStream oos = new ObjectOutputStream(fout);
oos.writeObject(list);
//Deserializing Object
FileInputStream streamIn = new FileInputStream("movie-matrix2.ser");
ObjectInputStream objectInputStream = new ObjectInputStream(streamIn);
list = (ArrayList<String[]>)objectInputStream.readObject();
有解决方法:例如投射到'(ArrayList >)',然后根据需要投射各个元素。或者,避免序列化一个Collection,而不是写'list.toArray(new String [0] [])''。 – VGR
是的,但这会使代码更复杂,而不会增加任何其他类型的安全性。 –