ByteArrayOutputStream类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()方法用于返回缓冲区当前存在的大小。

• 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。

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

  在返回大小时， size()方法不会引发异常。

Syntax:

句法：

    public int size();

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

方法的返回类型为int ，它返回此流中存在的缓冲区的当前大小。

Example:

例：

// Java program to demonstrate the example
// of int size() method of ByteArrayInputStream
import 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 ByteArrayOutputStream
BAOS = new ByteArrayOutputStream();
// By using write() method is to
// write b_arr to the BAOS
BAOS.write(b_arr);
// By using toString() method is
// to represent the BAOS as a string
System.out.println("BAOS.toString(): " + BAOS.toString());
// By using size() method is
// to return the size of the
// stream
int 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

输出量

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

翻译自: https://www.includehelp.com/java/bytearrayoutputstream-size-method-with-example.aspx