FileInputStream類close()方法 (FileInputStream 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 FileInputStream and free all system resources linked with this stream.

  close()方法用于關閉此FileInputStream并釋放與此流鏈接的所有系統資源。

• 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。

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

  close()方法在關閉流時可能會引發異常。

  IOException: This exception may throw while getting any input/output error or when this stream is closed by close() method.

  IOException ：在獲取任何輸入/輸出錯誤時或通過close()方法關閉此流時，可能引發此異常。

Syntax:

句法：

    public void close();

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 void, it returns nothing.

該方法的返回類型為void ，不返回任何內容。

Example:

例：

// Java program to demonstrate the example 
// of void close() method of FileInputStream
import java.io.*;
public class CloseOfFIS {
public static void main(String[] args) throws Exception {
FileInputStream fis_stm = null;
int count = 0;
try {
// Instantiates FileInputStream
fis_stm = new FileInputStream("D:\\includehelp.txt");
// By using read() method is to read
// a byte from fis_stm
count = fis_stm.read();
// Display corresponding bytes value
byte b = (byte) count;
// Display value of b
System.out.println("fis_stm.read(): " + b);
// By using close() method is to close
// close the stream     
fis_stm.close();
// when we call read() method after
// closing the stream will result an exception
count = fis_stm.read();
} 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 (fis_stm != null) {
fis_stm.close();
}
}
}
}

Output

輸出量

fis_stm.read(): 0
java.io.IOException: Stream Closed

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