ByteArrayOutputStream類size()方法 (ByteArrayOutputStream Class size() method)

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

  size()方法在java.io包中可用。

• size() method is used to return the current size of the buffer exists.

  size()方法用于返回緩沖區當前存在的大小。

• size() 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.

  size()方法是一種非靜態方法，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。

• size() method does not throw an exception at the time of returning the size.

  在返回大小時， size()方法不會引發異常。

Syntax:

句法：

public int size();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

Return value:

返回值：

The return type of the method is int, it returns the current size of the buffer exists in this stream.

方法的返回類型為int ，它返回此流中存在的緩沖區的當前大小。

Example:

例：

// Java program to demonstrate the example // of int size() method of ByteArrayInputStreamimport java.io.*;public class SizeOfBAOS {public static void main(String[] args) throws Exception {byte[] b_arr = {97,98,99,100};ByteArrayOutputStream BAOS = null;try {// Instantiates ByteArrayOutputStreamBAOS = new ByteArrayOutputStream();// By using write() method is to// write b_arr to the BAOSBAOS.write(b_arr);// By using toString() method is // to represent the BAOS as a stringSystem.out.println("BAOS.toString(): " + BAOS.toString());// By using size() method is// to return the size of the// streamint s_size = BAOS.size();System.out.println("BAOS.size(): " + s_size);} catch (Exception ex) {System.out.println(ex.toString());} finally {if (BAOS != null)BAOS.close();}} }

Output

輸出量

BAOS.toString(): abcd BAOS.size(): 4

翻譯自: https://www.includehelp.com/java/bytearrayoutputstream-size-method-with-example.aspx

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