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How to use the FloatBuffer slice() method in Java

Ayesha Naeem

The FloatBuffer slice method creates a new buffer from the this buffer. The new buffer shares a slice of the this buffer, which means any changes in the new buffer is reflected in the this buffer and vice versa.

The program needs to include the following header to use the FloatBuffer slice() method:

 java.nio.FloatBuffer 

Syntax

public abstract FloatBuffer slice()

Parameters and return value

The FloatBuffer slice() method accepts no parameters and returns a new float buffer that shares a slice of the original buffer.

The mark, limit, and position of the new buffer are independent of the original buffer.

The new buffer starts from the current position in the original buffer. The position of the new buffer is set to zero, and the mark is undefined. In contrast, the limit and capacity are set to the number of elements remaining in the this buffer, starting from its position.

Example

The following example demonstrates how to use the FloatBuffer slice() method in Java.

The program creates a float array and uses it to create a buffer through the wrap() method. The program then sets the buffer’s position to 3 and implements the FloatBuffer slice() method. Since there are 6 elements in the original buffer and its position is 3, the limit of the new buffer is 3. The position of the new buffer is set to 0.

// Java program to demonstrate
// mark() method

import java.nio.*;
import java.util.*;

public class main {

	public static void main(String[] args)
	{

		try {

			float[] arr = { 11,22,33,44,55,66 };

			//create an Int Buffer
			FloatBuffer buf = FloatBuffer.wrap(arr);

			//set position to index 3
			buf.position(3);

			//create a slice
			FloatBuffer newbuf = buf.slice();

			//display this buf
			System.out.println(	"Original FloattBuffer"+ Arrays.toString(buf.array()));
			System.out.println( "\nPosition: "+ buf.position());
			System.out.println( "\nLimit: "	+ buf.limit());

			//display new float buffer
			System.out.println(	"\nNew FloatBuffer"+ Arrays.toString(newbuf.array()));
			System.out.println( "\nPosition: "+ newbuf.position());
			System.out.println( "\nLimit: "	+ newbuf.limit());

			
			
		}

		catch (InvalidMarkException e) {
			System.out.println("New postion is less than the previous position");
			System.out.println("Exception throws: "
							+ e);
		}
	}
}

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Ayesha Naeem
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