stringwriter_Java StringWriter getBuffer（）方法与示例

stringwriter

StringWriter类的getBuffer()方法 (StringWriter Class getBuffer() method)

getBuffer() method is available in java.io package.
getBuffer()方法在java.io包中可用。
getBuffer() method is used to get the StringBuffer that holds the present buffer value.
getBuffer()方法用于获取保存当前缓冲区值的StringBuffer。
getBuffer() 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.
getBuffer()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。
getBuffer() method does not throw an exception at the time of returning StringBuffer.
返回StringBuffer时， getBuffer()方法不会引发异常。

Syntax:

句法：

    public StringBuffer getBuffer();

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 StringBuffer, it returns the StringBuffer itself that holds the current buffer value.

该方法的返回类型为StringBuffer ，它返回保存当前缓冲区值的StringBuffer本身。

Example:

例：

// Java program to demonstrate the example 
// of StringBuffer getBuffer() method of StringWriter
import java.io.*;
public class GetBufferOfFSW {
public static void main(String[] args) throws Exception {
StringWriter str_w = null;
String str = "Java World!!!";
try {
// Instantiates StringWriter
str_w = new StringWriter();
str_w.write(str);
// By using getBuffer() method is to
// get the buffer of this str_w stream
StringBuffer str_b = str_w.getBuffer();
System.out.println("str_w.getBuffer(): " + str_b);
} catch (Exception ex) {
System.out.println(ex.toString());
} finally {
// with the help of this block is to
// free all necessary resources linked
// with the stream
if (str_w != null) {
str_w.close();
}
}
}
}

Output

输出量