FloatBuffer get() methods in Java with Examples

Last Updated : 24 May, 2019

get()

The get() method of java.nio.FloatBuffer Class is used to reads the float at the given buffer's current position, and then increments the position. Syntax : 
public abstract float get()
Return Value: This method returns the float value at the buffer's current position. Throws: This method throws BufferUnderflowException - If the buffer's current position is not smaller than its limit, then this exception is thrown. Below are the examples to illustrate the get() method: Examples 1: Java 
// Java program to demonstrate
// get() method

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

public class GFG {

    public static void main(String[] args)
    {

        // Declaring the capacity of the FloatBuffer
        int capacity = 5;

        // Creating the FloatBuffer
        try {

            // creating object of floatbuffer
            // and allocating size capacity
            FloatBuffer fb = FloatBuffer.allocate(capacity);

            // putting the value in floatbuffer
            fb.put(8.56F);
            fb.put(9.61F);
            fb.put(1.24F);
            fb.rewind();

            // print the FloatBuffer
            System.out.println("Original FloatBuffer:  "
                               + Arrays.toString(fb.array()));

            // Reads the float at this buffer's current position
            // using get() method
            float value = fb.get();

            // print the Float value
            System.out.println("\nFloat Value: " + value);

            // Reads the  float at this buffer's next position
            // using get() method
            float value1 = fb.get();

            // print the Float value
            System.out.print("\nNext Float Value: " + value1);
        }

        catch (IllegalArgumentException e) {

            System.out.println("\nIllegalArgumentException catched");
        }

        catch (ReadOnlyBufferException e) {

            System.out.println("\nReadOnlyBufferException catched");
        }

        catch (BufferUnderflowException e) {

            System.out.println("\nException throws: " + e);
        }
    }
}
Output: 
Original FloatBuffer:  [8.56, 9.61, 1.24, 0.0, 0.0]

Float Value: 8.56

Next Float Value: 9.61
Examples 2: Java 
// Java program to demonstrate
// get() method

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

public class GFG {

    public static void main(String[] args)
    {

        // Declaring the capacity of the FloatBuffer
        int capacity = 3;

        // Creating the FloatBuffer
        try {

            // creating object of floatbuffer
            // and allocating size capacity
            FloatBuffer fb = FloatBuffer.allocate(capacity);

            // putting the value in floatbuffer
            fb.put(8.56F);
            fb.put(9.61F);

            // print the FloatBuffer
            System.out.println("Original FloatBuffer:  "
                               + Arrays.toString(fb.array()));

            // Reads the float at this buffer's current position
            // using get() method
            float value = fb.get();

            // print the Float value
            System.out.println("\nFloat Value: " + value);

            // Reads the  float at this buffer's next position
            // using get() method
            System.out.print("\nsince the buffer current position is incremented");
            System.out.print(" to greater than its limit ");

            float value1 = fb.get();

            // print the Float value
            System.out.print("\nNext Float Value: " + value1);
        }

        catch (IllegalArgumentException e) {

            System.out.println("\nIllegalArgumentException catched");
        }

        catch (ReadOnlyBufferException e) {

            System.out.println("\nReadOnlyBufferException catched");
        }

        catch (BufferUnderflowException e) {

            System.out.println("\nException throws : " + e);
        }
    }
}
Output: 
Original FloatBuffer:  [8.56, 9.61, 0.0]

Float Value: 0.0

since the buffer current position is incremented to greater than its limit 
Exception throws : java.nio.BufferUnderflowException

get(int index)

The get(int index) method of FloatBuffer is used to read the article at a specified index. Syntax : 
public abstract float get(int index)
Parameters: This method takes index (The index from which the float will be read) as a parameter. Return Value: This method returns the float value at the given index. Exception: This method throws IndexOutOfBoundsException. If index is negative or not smaller than the buffer's limit this exception is thrown. Below are the examples to illustrate the get(int index) method: Examples 1: Java 
// Java program to demonstrate
// get(int index) method

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

public class GFG {

    public static void main(String[] args)
    {

        // Declaring the capacity of the FloatBuffer
        int capacity = 3;

        // Creating the FloatBuffer
        try {

            // creating object of floatbuffer
            // and allocating size capacity
            FloatBuffer fb = FloatBuffer.allocate(capacity);

            // putting the value in floatbuffer
            fb.put(8.56F);
            fb.put(9.61F);
            fb.put(6.61F);

            // print the FloatBuffer
            System.out.println("Original FloatBuffer:  "
                               + Arrays.toString(fb.array()));

            // Reads the float at the index 0 of the floatbuffer
            // using get() method
            float value0 = fb.get(0);

            // print the Float value
            System.out.println("\nFloat Value at index 0: " + value0);

            // Reads the float at the index 1 of the floatbuffer
            // using get() method
            float value1 = fb.get(1);

            // print the Float value
            System.out.println("\nFloat Value at index 1: " + value1);

            // Reads the float at the index 2 of the floatbuffer
            // using get() method
            float value2 = fb.get(2);

            // print the Float value
            System.out.println("\nFloat Value at index 2: " + value2);
        }

        catch (IllegalArgumentException e) {

            System.out.println("\nIllegalArgumentException catched");
        }

        catch (IndexOutOfBoundsException e) {

            System.out.println("\nReadOnlyBufferException catched");
        }

        catch (BufferUnderflowException e) {

            System.out.println("\nException throws : " + e);
        }
    }
}
Output: 
Original FloatBuffer:  [8.56, 9.61, 6.61]

Float Value at index 0: 8.56

Float Value at index 1: 9.61

Float Value at index 2: 6.61
Examples 2: Java 
// Java program to demonstrate
// get() method

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

public class GFG {

    public static void main(String[] args)
    {

        // Declaring the capacity of the FloatBuffer
        int capacity = 3;

        // Creating the FloatBuffer
        try {

            // creating object of floatbuffer
            // and allocating size capacity
            FloatBuffer fb = FloatBuffer.allocate(capacity);

            // putting the value in floatbuffer
            fb.put(8.56F);
            fb.put(9.61F);
            fb.put(6.61F);

            // print the FloatBuffer
            System.out.println("Original FloatBuffer:  "
                               + Arrays.toString(fb.array()));

            // Reads the float at the index 0 of the floatbuffer
            // using get() method
            float value0 = fb.get(0);

            // print the Float value
            System.out.println("\nFloat Value at index 0: " + value0);

            // Reads the float at the index 1 of the floatbuffer
            // using get() method
            float value1 = fb.get(1);

            // print the Float value
            System.out.println("\nFloat Value at index 1: " + value1);

            // Reads the float at the index 2 of the floatbuffer
            // using get() method
            System.out.println("\nTrying to get the float"
                               + " of index greater than its limit ");
            float value2 = fb.get(4);

            // print the Float value
            System.out.println("\nFloat Value at index 2: " + value2);
        }

        catch (IllegalArgumentException e) {

            System.out.println("IllegalArgumentException catched");
        }

        catch (IndexOutOfBoundsException e) {

            System.out.println("Exception thrown: " + e);
        }

        catch (BufferUnderflowException e) {

            System.out.println("Exception throws : " + e);
        }
    }
}
Output: 
Original FloatBuffer:  [8.56, 9.61, 6.61]

Float Value at index 0: 8.56

Float Value at index 1: 9.61

Trying to get the float of index greater than its limit 
Exception thrown: java.lang.IndexOutOfBoundsException
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