Java.io.PushbackReader.reset() Method

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Description

The java.io.PushbackReader.reset() method resets the stream. The reset method of PushbackReader always throws an exception.

Declaration

Following is the declaration for java.io.PushbackReader.reset() method

public void reset()

Parameters

  • NA

Return Value

This method does not return a value.

Exception

  • IOException -- Always, since reset is not supported

Example

The following example shows the usage of java.io.PushbackReader.reset() method.

package com.tutorialspoint;

import java.io.*;

public class PushbackReaderDemo {

   public static void main(String[] args) {
      try {
         String s = "Hello World";

         // create a new StringReader
         StringReader sr = new StringReader(s);

         // create a new PushBack reader based on our string reader
         PushbackReader pr = new PushbackReader(sr, 20);

         // read the first five chars
         for (int i = 0; i < 5; i++) {
            char c = (char) pr.read();
            System.out.print("" + c);
         }

         // change line
         System.out.println();

         // try to reset and get an exception because it is not supported
         pr.reset();

         // close the stream
         pr.close();

      } catch (IOException ex) {
         ex.printStackTrace();
      }
   }
}

Let us compile and run the above program, this will produce the following result:

Hello
java.io.IOException: mark/reset not supported



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