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Java Reader ready() method with Example
Reader Class ready() method: Here, we are going to learn about the ready() method of Reader Class with its syntax and example.
Submitted by Preeti Jain, on April 27, 2020
Reader Class ready() method
- ready() method is available in java.io package.
- ready() method is used to check whether this 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.
Syntax:
public boolean ready();
Parameter(s):
- It does not accept any parameter.
Return value:
The return type of the method is boolean, it returns true when this stream is ready (i.e. input data is available for the next read) otherwise it returns false.
Example:
// Java program to demonstrate the example
// of boolean ready() method of Reader
import java.io.*;
public class ReadyOfR {
public static void main(String[] args) throws Exception {
Reader r_stm = null;
try {
// Instantiates Reader
r_stm = new StringReader("JavaWorld!!!!");
// By using ready() method is to
// check whether this stream r_str
// is ready to be read or not
boolean status = r_stm.ready();
System.out.println("r_stm.ready(): " + status);
} catch (Exception ex) {
System.out.println(ex.toString());
} finally {
// with the help of this block is to
// free all necessary resources linked
// with the stream
if (r_stm != null) {
r_stm.close();
}
}
}
}
Output
r_stm.ready(): true