The position(int newPosition) method of java.nio.Buffer Class is used to set this buffer’s position. If the mark is defined and larger than the new position then it is discarded.
Syntax:
public Buffer position(int newPosition)
Parameters: This method takes the newPosition as parameter which is the new position value. It must be non-negative and no larger than the current limit.
Return Value: This method returns this buffer.
Below are the examples to illustrate the position() method:
Examples 1:
// Java program to demonstrate// position() method import java.nio.*;import java.util.*; public class GFG { public static void main(String[] args) { byte[] barr = { 10, 20, 30, 40 }; // creating object of ByteBuffer // and allocating size capacity ByteBuffer bb = ByteBuffer.wrap(barr); // Typecasting ByteBuffer into Buffer Buffer bb1 = (Buffer)bb; // try to set the position at index 2 // using position() method bb1.position(2); // Set this buffer mark position bb1.mark(); // try to set the position at index 4 // using position() method bb1.position(4); // display position System.out.println("position before reset: " + bb.position()); // try to call reset() to restore // to the position we marked bb1.reset(); // display position System.out.println("position after reset: " + bb1.position()); }} |
Output:
position before reset: 4 position after reset: 2
Examples 2:
// Java program to demonstrate// position() method import java.nio.*;import java.util.*; public class GFG { public static void main(String[] args) { // creating object of ByteBuffer // and allocating size capacity ByteBuffer bb = ByteBuffer.allocate(4); // Typecasting ByteBuffer into Buffer Buffer bb1 = (Buffer)bb; // try to set the position at index 1 // using position() method bb1.position(3); // display position System.out.println("position before clear: " + bb1.position()); // try to clear the Buffer // using clear() method bb1.clear(); // display position System.out.println("position after clear: " + bb1.position()); }} |
Output:
position before clear: 3 position after clear: 0
Reference: https://docs.oracle.com/javase/9/docs/api/java/nio/Buffer.html#position-int-
