java reader

Reader類ready()方法 (Reader Class ready() method)

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

  ready()方法在java.io包中可用。

• ready() method is used to check whether this stream is ready to be read or not.

  ready()方法用于檢查此流是否已準備好被讀取。

• ready() 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.

  ready()方法是一種非靜態方法，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。

• ready() method may throw an exception at the time of checking the state of the stream.

  在檢查流的狀態時， ready()方法可能會引發異常。

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

  IOException：遇到任何輸入/輸出錯誤時，可能引發此異常。

Syntax:

句法：

public boolean ready();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

Return value:

返回值：

The return type of the method is boolean, it returns true when this stream is ready (i.e. input data is available for the next read) otherwise it returns false.

該方法的返回類型為boolean ，當此流準備就緒時(即輸入數據可用于下一次讀取)返回true，否則返回false。

Example:

例：

// Java program to demonstrate the example // of boolean ready() method of Readerimport java.io.*;public class ReadyOfR {public static void main(String[] args) throws Exception {Reader r_stm = null;try {// Instantiates Readerr_stm = new StringReader("JavaWorld!!!!");// By using ready() method is to// check whether this stream r_str// is ready to be read or notboolean status = r_stm.ready();System.out.println("r_stm.ready(): " + status);} 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 (r_stm != null) {r_stm.close();}}} }

Output

輸出量

r_stm.ready(): true

翻譯自: https://www.includehelp.com/java/reader-ready-method-with-example.aspx

java reader

總結

以上是生活随笔為你收集整理的java reader_Java Reader ready（）方法与示例的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。