ObjectOutputStream類writeBytes()方法 (ObjectOutputStream Class writeBytes() method)

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

  writeBytes()方法在java.io包中可用。

• writeBytes() method is used to write the given string as a sequence of bytes.

  writeBytes()方法用于將給定的字符串作為字節序列寫入。

• writeBytes() 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.

  writeBytes()方法是一個非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• writeBytes() method may throw an exception at the time of writing bytes.

  writeBytes()方法在寫入字節時可能會引發異常。

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

  IOException ：在寫入輸出流時遇到任何輸入/輸出錯誤時，可能引發此異常。

Syntax:

句法：

public void writeBytes(String s);

Parameter(s):

參數：

• String s – represents the string to be written.

  字符串s –表示要寫入的字符串。

Return value:

返回值：

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

該方法的返回類型為void ，不返回任何內容。

Example:

例：

// Java program to demonstrate the example // of void writeBytes(String s) method of // ObjectOutputStreamimport java.io.*;public class WriteBytesOfOOS {public static void main(String[] args) throws Exception {// Instantiates ObjectOutputStream , ObjectInputStream // FileInputStream and FileOutputStreamFileOutputStream 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 writeBytes() method is to// write the bytes to the stream obj_out_stm.writeBytes("Java");obj_out_stm.flush();// By using readByte() method is to // read the byte and convert it into// charfor (int i = 0; i < 4; ++i) {char ch = (char) obj_in_stm.readByte();System.out.println("obj_in_stm.readByte(): " + 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

輸出量

obj_in_stm.readByte(): J obj_in_stm.readByte(): a obj_in_stm.readByte(): v obj_in_stm.readByte(): a Stream Shutdown...

翻譯自: https://www.includehelp.com/java/objectoutputstream-writebytes-method-with-example.aspx

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