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CharBuffer wrap() method in Java
A character array can be wrapped into a buffer using the method wrap() in the class java.nio.CharBuffer. This method requires a single parameter i.e. the char array to be wrapped into a buffer and it returns the new buffer created. If the returned buffer is modified, then the contents of the array are also similarly modified and vice versa.
A program that demonstrates this is given as follows −
Example
import java.nio.*;
import java.util.*;
public class Demo {
public static void main(String[] args) {
try {
char[] arr = { 'A', 'P', 'P', 'L', 'E' };
System.out.println("The array length is: " + arr.length);
System.out.println("Array elements are: " + Arrays.toString(arr));
CharBuffer buffer = CharBuffer.wrap(arr);
buffer.rewind();
System.out.println("
The CharBuffer is: " + Arrays.toString(buffer.array()));
System.out.println("The position is: " + buffer.position());
System.out.println("The capacity is: " + buffer.capacity());
} catch (IllegalArgumentException e) {
System.out.println("Error!!! IllegalArgumentException");
} catch (ReadOnlyBufferException e) {
System.out.println("Error!!! ReadOnlyBufferException");
}
}
}Output
The array length is: 5 Array elements are: [A, P, P, L, E] The CharBuffer is: [A, P, P, L, E] The position is: 0 The capacity is: 5
Updated on: 30-Jul-2019
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