Java c-sharp USES binary serialization deserialization operation data

Java USES binary serialization, deserialization operations, first, to introduce the following java.io related packages, or directly write import java.io.*;
Next, for ease of writing, copy files, and throws declare exceptions

public void test6() throws IOException {

byte[] b = new byte[1024];//Define byte array, buffer
FileInputStream in = new FileInputStream("E:\logo.gif");//Create an input stream object
FileOutputStream out = new FileOutputStream("E:\My.gif");//Create an output stream object
DataInputStream input = new DataInputStream(in);//Create the input binary stream
DataOutputStream dout = new DataOutputStream(out);//Create the output binary stream
int num = input.read(b);//Read the binary file into b 

while (num != -1) {

dout.write(b, 0, num);//Writes the array read to the output stream 

num = input.read(b);//Read 
 again
}

//Close all stream objects 
 in order
input.close();

dout.close();

in.close();

out.close();

System.out.println(" Copy successful! ");

}

Preliminary code, for reference only!
C # using Binary Serialization and deserialization operation first, introducing the namespace using System. The Runtime. Serialization. Formatters. Binary; To manipulate serialization and deserialization
Also, add an indicator class [Serializable] above the class that involves the serialized custom class
Example:
[Serializable]

public class PlayManager

    {

/// <summary>

        /// serialized save data 

        /// </summary>

        public void Save()

        { 

        FileStream fs = null;

            try

            {

                fs = new FileStream(" Save the path to the file ", FileMode.Create);

                BinaryFormatter bf = new BinaryFormatter();

                bf.Serialize(fs,  The object to save );

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

            finally

            {

                fs.Close();

            }

/// <summary>

        /// load serialization information 

        /// </summary>

        public void Load()

        {

FileStream fs = null;

                try

                {

                    fs = new FileStream(" The file path ", FileMode.OpenOrCreate);

                    BinaryFormatter bf = new BinaryFormatter();

                     Object to receive = ( Type of object )bf.Deserialize(fs);   //Casts 

                }

                catch (Exception ex)

                {

                    MessageBox.Show(ex.Message);

                }

                finally

                {

                    fs.Close();

                }   

That's how you serialize files in C#, and it's actually pretty simple. If you don't add try-catch-finally, it's just four lines of code.
Past friends, do you see? Do not understand still can ask!