FloatBuffer allocate() method in Java With Examples Last Updated : 27 May, 2021 Summarize Comments Improve Suggest changes Share Like Article Like Report The allocate() method of java.nio.FloatBuffer Class is used to allocate a new float buffer next to the existing buffer. The new buffer's position will be zero. Its limit will be its capacity. Its mark will be undefined. And each of its elements will be initialized to zero. It will have a backing array, and its array offset will be zero.Syntax: public static FloatBuffer allocate(int capacity) Parameter: This method takes the new buffer's capacity, in float, as a parameter.Return Value: This method returns the new float buffer.Exception: This method throws the IllegalArgumentException if the capacity is a negative integer.Below program illustrates the allocate() method:Examples 1: Java // Java program to demonstrate // allocate() method import java.nio.*; import java.util.*; public class GFG { public static void main(String[] args) { // Declaring the capacity of the FloatBuffer int capacity = 10; // Creating the FloatBuffer // creating object of floatbuffer // and allocating size capacity FloatBuffer fb = FloatBuffer.allocate(capacity); // putting the value in floatbuffer fb.put(8.56F); fb.put(2, 9.61F); System.out.println("FloatBuffer: " + Arrays.toString(fb.array())); } } Output: FloatBuffer: [8.56, 0.0, 9.61, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] Examples 2: To demonstrate IllegalArgumentException Java // Java program to demonstrate // allocate() method import java.nio.*; import java.util.*; public class GFG { public static void main(String[] args) { // Declaring the capacity of the FloatBuffer // by negative integer int capacity = -10; // Creating the FloatBuffer try { // creating object of floatbuffer // and allocating size with negative integer System.out.println("Trying to allocate a negative integer"); FloatBuffer fb = FloatBuffer.allocate(capacity); } catch (IllegalArgumentException e) { System.out.println("Exception thrown: " + e); } } } OutputTrying to allocate a negative integer Exception thrown: java.lang.IllegalArgumentException: capacity < 0: (-10 < 0) Comment More infoAdvertise with us Next Article FloatBuffer compareTo() method in Java With Examples R rohitprasad3 Follow Improve Article Tags : Misc Java Java-Functions Java-FloatBuffer Java-NIO package +1 More Practice Tags : JavaMisc Similar Reads FloatBuffer duplicate() method in Java with Examples The duplicate() method of java.nio.FloatBuffer Class is used to Create a new float buffer that shares the given buffer's content. The content of the new buffer will be that of this buffer. Changes to this buffer's content will be visible in the new buffer, and vice versa; the two buffers' position, 3 min read FloatBuffer compact() method in Java With Examples The compact() method of java.nio.FloatBuffer Class is used to compact the given buffer. The values between the buffer's current position and its limit are copied to the beginning of the buffer. The buffer's position is then set to n+1 and its limit is set to its capacity. The buffer's position is se 3 min read FloatBuffer equals() method in Java with Examples The equals() method of java.nio.FloatBuffer Class is used to check whether or not the given buffer is equal to another object. Two float buffers are equal if, and only if, They have the same element type, They have the same number of remaining elements, and The two sequences of remaining elements, c 4 min read FloatBuffer compareTo() method in Java With Examples The compareTo() method of java.nio.FloatBuffer class is used to compare one buffer to another. Two float buffers are compared by comparing their sequences of remaining elements lexicographically, without regard to the starting position of each sequence within its corresponding buffer. Pairs of float 4 min read FloatBuffer arrayOffset() method in Java With Examples The arrayOffset() method of java.nio.FloatBuffer class is used to return the offset within the buffer's backing array of the first element of the buffer. It means that if this buffer is backed by an array, then buffer position p corresponds to array index p + arrayOffset(). Inorder to check whether 3 min read FloatBuffer put() methods in Java with Examples put(float f) The put(float f) method of java.nio.FloatBuffer Class is used to write the given float into the newly created float buffer at the current position, and then increments the position. Syntax : public abstract FloatBuffer put(float f) Parameters: This method takes the float value f as a pa 6 min read Like