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Java StringReader ready() Method with Example

StringReader Class ready() method: Here, we are going to learn about the ready() method of StringReader Class with its syntax and example.
Submitted by Preeti Jain, on April 25, 2020

StringReader Class ready() method

  • ready() method is available in java.io package.
  • ready() method is used to check whether this StringReader stream is ready to be read or not.
  • ready() 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.
  • ready() method may throw an exception at the time of checking the state of the stream.
    IOException: This exception may throw when getting any input/output error while performing.


    public boolean ready();


  • It does not accept any parameter.

Return value:

The return type of the method is boolean, it returns true when input is available for the next read without blocking otherwise it returns false.


// Java program to demonstrate the example 
// of boolean ready() method of StringReader

import java.io.*;

public class ReadyOfSR {
    public static void main(String[] args) throws Exception {
        StringReader str_r = null;

        try {
            // Instantiates StringReader
            str_r = new StringReader("JavaWorld!");

            // By using ready() method is to check 
            // whether this stream str_r is ready to 
            // be read or not
            boolean status = str_r.ready();
            System.out.println("str_r.ready(): " + status);
        } catch (Exception ex) {
        } finally {
            // with the help of this block is to
            // free all necessary resources linked
            // with the stream
            if (str_r != null) {


str_r.ready(): true

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