ObjectOutputStream类reset()方法 (ObjectOutputStream Class reset() method)

• reset() method is available in java.io package.

  reset()方法在java.io包中可用。

• reset() method is used to reset this stream. It reset the stream to the position marked most recently.

  reset()方法用于重置此流。 它将流重置到最近标记的位置。

• reset() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  reset()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• reset() method may throw an exception at the time of resetting the stream.

  reset()方法在重置流时可能会引发异常。

  IOException: This exception may throw when getting any input/output error while writing to the output stream.

  IOException ：在写入输出流时遇到任何输入/输出错误时，可能引发此异常。

Syntax:

句法：

    public void reset();

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

The return type of this method is void, it returns nothing.

此方法的返回类型为void ，不返回任何内容。

Example:

例：

// Java program to demonstrate the example 
// of void reset() method of ObjectOutputStream

import java.io.*;

public class ResetOfOOS {
 public static void main(String[] args) throws Exception {
  // Instantiates ObjectOutputStream , ObjectInputStream 
  // FileInputStream and FileOutputStream
  FileOutputStream file_out_stm = new FileOutputStream("D:\\includehelp.txt");
  ObjectOutputStream obj_out_stm = new ObjectOutputStream(file_out_stm);
  FileInputStream file_in_stm = new FileInputStream("D:\\includehelp.txt");
  ObjectInputStream obj_in_stm = new ObjectInputStream(file_in_stm);

  // By using writeByte() method is to
  // write byte to the stream		
  obj_out_stm.writeByte(65);

  // By using reset() method is to
  // reset the stream 
  obj_out_stm.reset();

  // Write another bytes to the
  // stream
  obj_out_stm.writeByte(66);
  obj_out_stm.writeByte(67);

  // By using flush() method is to
  // flush the stream immediately
  System.out.println("Stream Flushed...");
  obj_out_stm.flush();

  // By using readByte() method is to 
  // read the byte and convert it into
  // char
  for (int i = 0; i < 3; ++i) {
   char ch = (char) obj_in_stm.readByte();
   System.out.println("ch: " + ch + " ");
  }

  // By using close() method is to 
  // close all the streams 
  System.out.println("Stream Shutdown... ");

  file_in_stm.close();
  file_out_stm.close();
  obj_in_stm.close();
  obj_out_stm.close();
 }
}

Output

输出量

Stream Flushed...
ch: A 
ch: B 
ch: C 
Stream Shutdown... 

翻译自: https://www.includehelp.com/java/objectoutputstream-reset-method-with-example.aspx