BufferedWriter类close()方法 (BufferedWriter Class close() method)

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

  close()方法在java.io包中可用。

• close() method is used to flushes the characters from the stream and later will close it by using close() method.

  close()方法用于从流中清除字符，以后将使用close()方法将其关闭。

• close() 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.

  close()方法是一个非静态方法，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。

• close() method may throw an exception at the time of the closing stream.

  close()方法在关闭流时可能会引发异常。

  IOException: This exception may throw an exception while performing input/output operation.

  IOException ：在执行输入/输出操作时，此异常可能会引发异常。

Syntax:

句法：

    public void close();

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 void, it returns nothing.

该方法的返回类型为void ，不返回任何内容。

Example:

例：

// Java program to demonstrate the example
// of void close() method of
// BufferedWriter
import java.io.*;
public class CloseBR {public static void main(String[] args) {try {// Instantiates StringWriter
StringWriter str_w = new StringWriter();
// Instantiates BufferedWriter
BufferedWriter buff_w = new BufferedWriter(str_w);
// Append "Hello" in buff_with the
// help of append()
buff_w.append("Hello...");
// Close the stream and free
// system resources linked with
// this stream buff_w
buff_w.close();
// we can't perform append() on
// buff_w because this stream is
// already closed
buff_w.append("World!!!");
// Read Buffer
System.out.println("" + str_w.getBuffer());
} catch (IOException ex) {System.out.println("buff_str: " + ex.getMessage());
}
}
}

Output

输出量

buff_str: Stream closed

翻译自: https://www.includehelp.com/java/bufferedwriter-close-method-with-example.aspx