The reset() method of PushbackReader Class in Java is used to reset the Stream. In the case of PushbackReader, this method always throws an exception as this method isn’t supported by the PushbackReader.
Syntax:
public void reset()
Parameters: This method do not accepts any parameter.
Return Value: This method do not returns any value.
Exception: This method throws IOException always as the reset() method is not supported.
Below methods illustrates the working of reset() method:
Program 1:
// Java program to demonstrate// PushbackReader reset() method import java.io.*;import java.util.*; class GFG { public static void main(String[] args) { try { // Initializing a StringReader // and PushbackReader String s = "GeeksForGeeks"; StringReader stringReader = new StringReader(s); PushbackReader pushbackReader = new PushbackReader(stringReader); // reset the stream position pushbackReader.reset(); // Close the stream using reset() pushbackReader.close(); System.out.println("Stream Closed."); } catch (Exception e) { System.out.println(e); } }} |
Output:
java.io.IOException: mark/reset not supported
Program 2:
// Java program to demonstrate// PushbackReader reset() method import java.io.*;import java.util.*; class GFG { public static void main(String[] args) { try { // Initializing a StringReader // and PushbackReader String s = "GFG"; StringReader stringReader = new StringReader(s); PushbackReader pushbackReader = new PushbackReader(stringReader); // reset the stream position pushbackReader.reset(); // Close the stream pushbackReader.close(); System.out.println("Stream Closed."); } catch (Exception e) { System.out.println(e); } }} |
Output:
java.io.IOException: mark/reset not supported
Reference: https://docs.oracle.com/javase/9/docs/api/java/io/PushbackReader.html#reset–
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