ByteArrayInputStream類reset()方法 (ByteArrayInputStream Class reset() method)

• reset() method is available in java.util package.

  reset()方法在java.util包中可用。

• reset() method is used to reset this ByteArrayInputStream to the last time marked position and when no user defines mark position set so it takes default mark position i.e. 0.

  reset()方法用于將此ByteArrayInputStream重置為上次標記的位置，并且在沒有用戶定義標記位置的情況下，它使用默認標記位置，即0。

• reset() 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.

  reset()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。

• reset() method does not throw an exception at the time of reset this stream.

  在重置此流時， reset()方法不會引發異常。

Syntax:

句法：

public void reset();

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 reset() method of // ByteArrayInputStreamimport java.io.*;public class ResetBAIS {public static void main(String[] args) throws Exception {byte[] by = {97,98,98,99};// Instantiates ByteArrayInputStream ByteArrayInputStream byte_s = new ByteArrayInputStream(by);// By using available() method is to// return the no. of bytes to be left // for readingInteger n_byte = byte_s.available();System.out.println("Left avail bytes = " + n_byte);// Read character from the streamchar ch1 = (char) byte_s.read();char ch2 = (char) byte_s.read();char ch3 = (char) byte_s.read();System.out.println("ch1: " + ch1);System.out.println("ch2 : " + ch2);System.out.println("byte_s.mark(5): ");// By using mark() method isto// set the limit the number of byte// to be read byte_s.mark(5);System.out.println("ch3: " + ch3);System.out.println("buff_str.reset(): ");// Reset the position of the// stream to the position last// mark() method calledbyte_s.reset();// Read from the streadchar ch4 = (char) byte_s.read();char ch5 = (char) byte_s.read();// Display characterSystem.out.println("ch4: " + ch4);System.out.println("ch5: " + ch5);byte_s.close();} }

Output

輸出量

Left avail bytes = 4 ch1: a ch2 : b byte_s.mark(5): ch3: b buff_str.reset(): ch4: c ch5: ?

翻譯自: https://www.includehelp.com/java/bytearrayinputstream-reset-method-with-example.aspx

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