CharBuffer length() methods in Java with Examples
The length() method of java.nio.CharBuffer Class is used to return the length of this character buffer. When viewed as a character sequence, the length of a character buffer is simply the number of characters between the position (inclusive) and the limit (exclusive); that is, it is equivalent to remaining().
Syntax:
public final int length()
Return Value: This method returns the length of this character buffer.
Below are the examples to illustrate the length() method:
Examples 1:
// Java program to demonstrate// length() method  import java.nio.*;import java.util.*;  public class GFG {    public static void main(String[] args)    {          // Declare and initialize the char array        char[] cb = { 'a', 'b', 'c' };          // wrap the char array into CharBuffer        // using wrap() method        CharBuffer charBuffer = CharBuffer.wrap(cb);          // Get the length of the charBuffer        // using length() method        int length = charBuffer.length();          // print the byte buffer        System.out.println("CharBuffer is : "                           + Arrays.toString(                                 charBuffer.array())                           + "\nLength: "                           + length);    }} |
Output:
CharBuffer is : [a, b, c] Length: 3
Examples 2:
// Java program to demonstrate// length() method  import java.nio.*;import java.util.*;  public class GFG {    public static void main(String[] args)    {        // defining and allocating CharBuffer        // using allocate() method        CharBuffer charBuffer            = CharBuffer.allocate(4);          // append char value in charBuffer        // using append() method        charBuffer.append('a');        charBuffer.append('b');          // print the char buffer        System.out.println("CharBuffer before append : "                           + Arrays.toString(                                 charBuffer.array())                           + "\nLength: "                           + charBuffer.length());          // append char value in charBuffer        // using append() method        charBuffer.append('c');          // print the char buffer        System.out.println("\nCharBuffer after append : "                           + Arrays.toString(                                 charBuffer.array())                           + "\nLength: "                           + charBuffer.length());    }} |
Output:
CharBuffer before append : [a, b,, ] Length: 2 CharBuffer after append : [a, b, c, ] Length: 1
Reference: https://docs.oracle.com/javase/9/docs/api/java/nio/CharBuffer.html#length–
