Java IO Tutorial - Java CharBuffer.asReadOnlyBuffer()

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Syntax

CharBuffer.asReadOnlyBuffer() has the following syntax.

public abstract CharBuffer asReadOnlyBuffer()

Example

In the following code shows how to use CharBuffer.asReadOnlyBuffer() method.

//from w w w . j  a va 2 s.  c  o m
import java.nio.CharBuffer;
import java.util.Arrays;

public class Main {
  public static void main(String[] args) {
    CharBuffer cb1 = CharBuffer.allocate(50);
    cb1.append("java2s.com");
    cb1.rewind();

    System.out.println(cb1.charAt(2));
    System.out.println(Arrays.toString(cb1.array()));

    
    CharBuffer cb2 = cb1.asReadOnlyBuffer();
    System.out.println(Arrays.toString(cb2.array()));
    

  }
}

The code above generates the following result.

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