The rewind() method of java.nio.IntBuffer Class is used to rewind this buffer. The position is set to zero and the mark is discarded. Invoke this method before a sequence of channel-write or get operations, assuming that the limit has already been set appropriately. Invoking this method neither changes nor discards the mark’s value.
Syntax:
public final IntBuffer rewind()
Parameter: The method do not take any parameter.
Return Value: This method returns this buffer.
Below are the examples to illustrate the rewind() method:
Examples 1:
// Java program to demonstrate// rewind() method import java.nio.*;import java.util.*; public class GFG { public static void main(String[] args) { // defining and allocating IntBuffer // using allocate() method IntBuffer intBuffer = IntBuffer.allocate(4); // put char value in intBuffer // using put() method intBuffer.put(10); intBuffer.put(20); // print the int buffer System.out.println( "Buffer before operation: " + Arrays.toString( intBuffer.array()) + "\nPosition: " + intBuffer.position() + "\nLimit: " + intBuffer.limit()); // rewind the Buffer // using rewind() method intBuffer.rewind(); // print the intbuffer System.out.println( "\nBuffer after operation: " + Arrays.toString( intBuffer.array()) + "\nPosition: " + intBuffer.position() + "\nLimit: " + intBuffer.limit()); }} |
Output:
Buffer before operation: [10, 20, 0, 0] Position: 2 Limit: 4 Buffer after operation: [10, 20, 0, 0] Position: 0 Limit: 4
Examples 2:
// Java program to demonstrate// rewind() method import java.nio.*;import java.util.*; public class GFG { public static void main(String[] args) { // defining and allocating IntBuffer // using allocate() method IntBuffer intBuffer = IntBuffer.allocate(5); // put int value in IntBuffer // using put() method intBuffer.put(10); intBuffer.put(20); intBuffer.put(30); // mark will be going to // discarded by rewind() intBuffer.mark(); // print the buffer System.out.println( "Buffer before operation: " + Arrays.toString( intBuffer.array()) + "\nPosition: " + intBuffer.position() + "\nLimit: " + intBuffer.limit()); // Rewind the Buffer // using rewind() method intBuffer.rewind(); // print the buffer System.out.println( "\nBuffer after operation: " + Arrays.toString( intBuffer.array()) + "\nPosition: " + intBuffer.position() + "\nLimit: " + intBuffer.limit()); }} |
Output:
Buffer before operation: [10, 20, 30, 0, 0] Position: 3 Limit: 5 Buffer after operation: [10, 20, 30, 0, 0] Position: 0 Limit: 5
Reference: https://docs.oracle.com/javase/9/docs/api/java/nio/IntBuffer.html#rewind–
