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What is the floatbuffer duplicate() method in Java?

Sarvech Qadir

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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duplicate() is one of the methods of the java.nio.FloatBuffer Class. This method creates a new buffer and duplicates the contents of an existing buffer to the new buffer.

The two buffers are inter-linked: changes in either buffer’s content will be visible in the other.

The following buffer properties are duplicated from the existing buffer:

  1. Capacity: The total number of values we can store in the buffer.
  2. Limit: The total number of values we can add before the buffer is full.
  3. Mark values.
  4. Data.

Syntax

FloatBuffer.duplicate()

Return value

This method returns a new float buffer duplicating the existing buffer.

Code

Here is a coding example of this method.

import java.nio.*;
import java.util.*;
class HelloWorld {
public static void main( String args[] ) {
// initializing an double buffer by allocating memory
FloatBuffer buff = FloatBuffer.allocate(5);
// put values in doubleBuffer using put() method
buff.put(23.2F);
buff.put(21.7F);
// printing buffer
System.out.println("FloatBuffer: "+ Arrays.toString(buff.array()));
// applying the duplicate method
FloatBuffer duplicate_buff = buff.duplicate();
// printing the duplicate buffer
System.out.println("Duplicate Buffer: "+ Arrays.toString(duplicate_buff.array()));
// see if buffer changes apply to duplicate buffer
buff.put(26.4F);
System.out.println("FloatBuffer after adding another value: "+ Arrays.toString(buff.array()));
// printing the duplicate buffer
System.out.println("Duplicate Buffer after changes: "+ Arrays.toString(duplicate_buff.array()));
}
}

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floatbuffer
java

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Sarvech Qadir
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Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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