FileOutputStream write binary file to a specified folder

Question

I'm trying to write a binary file to a specified folder, however it keeps giving me an exception. For example, if I write the file without specifying any folder the program writes it with no problem:

public void saveFile(String name) throws IOException {
    ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(name + ".bin"));
    out.writeObject(this);
    out.close();
}

However, when I try to specify the folder the program just doesn't write the file:

public void saveFile(String name) throws IOException {
    File location = new File("/path/" + name + ".bin");
    FileOutputStream fos = new FileOutputStream(location);

    ObjectOutputStream out = new ObjectOutputStream(fos);
    out.writeObject(this);
    out.close();
    fos.close();
}

I tryed several different ways but still no solution. Does anybody know what am I doing wrong?

Answer 1

Check if the class which you want to write is Serializable or not.

public class Foo implements java.io.Serializable{   

    //...

    public void write() throws IOException{
        ObjectOutputStream os = new ObjectOutputStream(new FileOutputStream("Test.bin"));
        os.writeObject(this);
        os.close();
    }   

}

Another problem: If there is no folder named path it cannot write the object

Check your code again.

Answer 2

似乎非序列化的唯一原因是，您可能尚未实现Serializable接口，并且无法正确输入路径名称，例如：-“ C：\\ Users \\ ..”希望它能正常工作