filterwriter

FilterWriter類flush()方法 (FilterWriter Class flush() method)

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

  flush()方法在java.io包中可用。

• flush() method is used to flush out the string from this FilterWriter stream.

  flush()方法用于從此FilterWriter流中清除字符串。

• flush() 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.

  flush()方法是一種非靜態(tài)方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• flush() method may throw an exception at the time of flushing the stream.

  flush()方法在刷新流時可能會引發(fā)異常。

  IOException: This exception may throw when getting any input/output error.

  IOException ：遇到任何輸入/輸出錯誤時，可能引發(fā)此異常。

Syntax:

句法：

public void flush();

Parameter(s):

參數(shù)：

• It does not accept any parameter.

  它不接受任何參數(shù)。

Return value:

返回值：

The return type of the method is void, it returns nothing.

該方法的返回類型為void ，不返回任何內(nèi)容。

Example:

例：

// Java program to demonstrate the example // of void flush() method of FilterWriterimport java.io.*;public class FlushOfFW {public static void main(String[] args) throws Exception {Writer w_stm = null;FilterWriter fw_stm = null;String str = "Java World!!!";try {// Instantiates StringReader and // FilterReaderw_stm = new StringWriter();fw_stm = new FilterWriter(w_stm) {};// By using write() method is to// write the given string to the// stream fw_stmfw_stm.write(str);// By using flush() method is to// flush the stream fw_stmfw_stm.flush();System.out.println("w_stm.toString(): " + w_stm.toString());} catch (Exception ex) {System.out.println(ex.toString());} finally {// with the help of this block is to// free all necessary resources linked// with the streamif (fw_stm != null) {fw_stm.close();}}} }

Output

輸出量

w_stm.toString(): Java World!!!

翻譯自: https://www.includehelp.com/java/filterwriter-flush-method-with-example.aspx

filterwriter

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