Java BufferedWriter close（）方法与示例

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