Método LongBuffer slice() en Java

El método slice() de java.nio.LongBuffer Class se usa para crear un nuevo búfer largo cuyo contenido es una subsecuencia compartida del contenido del búfer dado.

El contenido del nuevo búfer comenzará en la posición actual de este búfer. Los cambios en el contenido de este búfer serán visibles en el nuevo búfer y viceversa. Los valores de posición, límite y marca de los dos búferes serán independientes.

La posición del nuevo búfer será cero, su capacidad y su límite serán el número de enteros largos restantes en este búfer y su marca será indefinida. El nuevo búfer será directo si, y solo si, este búfer es directo, y será de solo lectura si, y solo si, este búfer es de solo lectura.

Sintaxis: 

public abstract LongBuffer slice()

Valor devuelto: este método devuelve el nuevo búfer largo.

A continuación se muestran los ejemplos para ilustrar el método slice():

Ejemplo 1: 

// Java program to demonstrate
// slice() method
 
import java.nio.*;
import java.util.*;
 
public class GFG {
 
    public static void main(String[] args)
    {
 
        // Declaring the capacity of the LongBuffer
        int capacity = 10;
 
        // Creating the LongBuffer
        try {
 
            // creating object of Longbuffer
            // and allocating size capacity
            LongBuffer ib1 = LongBuffer.allocate(capacity);
 
            // putting the value in Longbuffer
            ib1.put(8);
            ib1.put(9);
 
            // prLong the LongBuffer
            System.out.println("Original LongBuffer: "
                               + Arrays.toString(ib1.array()));
 
            // prLong the LongBuffer position
            System.out.println("position: " + ib1.position());
 
            // prLong the LongBuffer capacity
            System.out.println("capacity: " + ib1.capacity());
 
            // Creating a shared subsequence buffer of given LongBuffer
            // using slice() method
            LongBuffer ib2 = ib1.slice();
 
            // prLong the shared subsequence buffer
            System.out.println("shared subsequence LongBuffer: "
                               + Arrays.toString(ib2.array()));
 
            // prLong the LongBuffer position
            System.out.println("position: " + ib2.position());
 
            // prLong the LongBuffer capacity
            System.out.println("capacity: " + ib2.capacity());
        }
 
        catch (IllegalArgumentException e) {
 
            System.out.println("IllegalArgumentException catched");
        }
 
        catch (ReadOnlyBufferException e) {
 
            System.out.println("ReadOnlyBufferException catched");
        }
    }
}

Original LongBuffer: [8, 9, 0, 0, 0, 0, 0, 0, 0, 0]
position: 2
capacity: 10
shared subsequence LongBuffer: [8, 9, 0, 0, 0, 0, 0, 0, 0, 0]
position: 0
capacity: 8

Ejemplo 2:

// Java program to demonstrate
// slice() method
 
import java.nio.*;
import java.util.*;
 
public class GFG {
 
    public static void main(String[] args)
    {
 
        // Declaring the capacity of the LongBuffer
        int capacity = 10;
 
        // Creating the LongBuffer
        try {
 
            // creating object of Longbuffer
            // and allocating size capacity
            LongBuffer ib1 = LongBuffer.allocate(capacity);
 
            // putting the value in floatbuffer
            ib1.put(8);
            ib1.put(9);
            ib1.put(5);
            ib1.put(3);
 
            // prLong the LongBuffer
            System.out.println("Original LongBuffer: "
                               + Arrays.toString(ib1.array()));
 
            // prLong the LongBuffer position
            System.out.println("position: " + ib1.position());
 
            // prLong the LongBuffer capacity
            System.out.println("capacity: " + ib1.capacity());
 
            // Creating a shared subsequence buffer of given LongBuffer
            // using slice() method
            LongBuffer ib2 = ib1.slice();
            ib2.put(2);
            ib2.put(6);
 
            // prLong the shared subsequence buffer
            System.out.println("shared subsequence LongBuffer: "
                               + Arrays.toString(ib2.array()));
 
            // prLong the LongBuffer position
            System.out.println("position: " + ib2.position());
 
            // prLong the LongBuffer capacity
            System.out.println("capacity: " + ib2.capacity());
        }
 
        catch (IllegalArgumentException e) {
 
            System.out.println("IllegalArgumentException catched");
        }
 
        catch (ReadOnlyBufferException e) {
 
            System.out.println("ReadOnlyBufferException catched");
        }
    }
}

Original LongBuffer: [8, 9, 5, 3, 0, 0, 0, 0, 0, 0]
position: 4
capacity: 10
shared subsequence LongBuffer: [8, 9, 5, 3, 2, 6, 0, 0, 0, 0]
position: 2
capacity: 6