OutputStream類close()方法 (OutputStream 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 close this OutputStream stream and free all system resources linked with this stream and it cannot be re-opened and perform any output operation once it is closed.

  close()方法用于關(guān)閉此OutputStream流并釋放與此流鏈接的所有系統(tǒng)資源，并且一旦關(guān)閉它就無(wú)法重新打開并執(zhí)行任何輸出操作。

• 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()方法是一個(gè)非靜態(tài)方法，只能通過(guò)類對(duì)象訪問(wèn)，如果嘗試使用類名稱訪問(wèn)該方法，則會(huì)收到錯(cuò)誤消息。

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

  close()方法在關(guān)閉流時(shí)可能會(huì)引發(fā)異常。

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

  IOException ：在執(zhí)行過(guò)程中遇到任何輸入/輸出錯(cuò)誤時(shí)，可能引發(fā)此異常。

Syntax:

句法：

public void close();

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 close() method // of OutputStreamimport java.io.*;public class CloseOfOS {public static void main(String[] args) throws Exception {OutputStream os_stm = null;InputStream is_stm = null;int val = 65;try {// Instantiates FileOutputStream and // FileInputStream os_stm = new FileOutputStream("D:\\includehelp.txt");is_stm = new FileInputStream("D:\\includehelp.txt");// By using close() method is to close// the stream and when we call write, read// after closing the stream will result an // exceptionos_stm.close();// Loop to write byte to the streamfor (int i = 0; i < 3; ++i) {os_stm.write(val);val++;}// Loop to read byte from the streamfor (int i = 0; i < 3; ++i) {char ch = (char) is_stm.read();System.out.println("ch: " + ch);}} catch (Exception ex) {System.out.println("Stream Closed Before...");} finally {// with the help of this block is to// free all necessary resources linked// with the streamif (is_stm != null) {is_stm.close();if (os_stm != null) {os_stm.close();}}}} }

Output

輸出量

Stream Closed Before...

翻譯自: https://www.includehelp.com/java/outputstream-close-method-with-example.aspx

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