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LongBuffer slice() method in Java

  • Last Updated : 05 Aug, 2021

The slice() method of java.nio.LongBuffer Class is used to creates a new Long buffer whose content is a shared subsequence of the given buffer’s content.

The content of the new buffer will start at this buffer’s current position. Changes to this buffer’s content will be visible in the new buffer, and vice versa. The two buffers’ position, limit, and mark values will be independent.

The new buffer’s position will be zero, its capacity and its limit will be the number of Longegers remaining in this buffer, and its mark will be undefined. The new buffer will be direct if, and only if, this buffer is direct, and it will be read-only if, and only if, this buffer is read-only.

Syntax : 

public abstract LongBuffer slice()

Return Value: This method returns the new Long buffer.

Below are the examples to illustrate the slice() method:



Example 1: 

Java




// 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");
        }
    }
}
Output
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

Example 2:

Java




// 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");
        }
    }
}
Output
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

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