Java.io.BufferedReader.reset() Method

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Description

The java.io.BufferedReader.reset() method resets the stream to the most recent mark.

Declaration

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

public void reset()

Parameters

  • NA

Return Value

This method does not return any value.

Exception

  • IOException -- if the stream is never been marked, or the mark has become invalid

Example

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

package com.tutorialspoint;

import java.io.BufferedReader;
import java.io.StringReader;

public class BufferedReaderDemo {
   public static void main(String[] args) throws Exception {

      String s ="ABCDE";
      StringReader sr = null; 
      BufferedReader br = null;

      try{
 
         sr = new StringReader(s);
         
         // create new buffered reader
         br = new BufferedReader(sr);

         // reads and prints BufferedReader
         System.out.println((char)br.read());
         System.out.println((char)br.read());
         
         // mark invoked at this position
         br.mark(0);
         System.out.println("mark() invoked");
         System.out.println((char)br.read());
         System.out.println((char)br.read());
         
         // reset() repositioned the stream to the mark
         br.reset();
         System.out.println("reset() invoked");
         System.out.println((char)br.read());
         System.out.println((char)br.read());
         
      } catch (Exception e) {
         
         // exception occurred.
         e.printStackTrace();
      }finally{

         // releases any system resources associated with the stream
         if(sr!=null)
            sr.close();
         if(br!=null)
            br.close();
      }
   }
}

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

A
B
mark() invoked
C
D
reset() invoked
C
D



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