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());
}
} |
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());
}
} |
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–