Java ByteArrayOutputStream size（）方法与示例

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