Java.io.StringReader.markSupported() Method

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Description

The java.io.StringReader.markSupported() method tells whether this stream supports the mark() operation, which it does.

Declaration

Following is the declaration for java.io.StringReader.markSupported() method

public boolean markSupported()

Parameters

  • NA

Return Value

This method returns true if and only if this stream supports the mark operation.

Exception

  • NA

Example

The following example shows the usage of java.io.StringReader.markSupported() method.

package com.tutorialspoint;

import java.io.*;

public class StringReaderDemo {

   public static void main(String[] args) {

      String s = "Hello World";

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

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

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

         // print if mark is supported
         System.out.println("" + sr.markSupported());

         // close the stream
         sr.close();


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

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

Hello
true



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