FloatBuffer get() methods in Java with Examples

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:

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// 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);
        }
    }
}

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Output:

Original FloatBuffer:  [8.56, 9.61, 1.24, 0.0, 0.0]

Float Value: 8.56

Next Float Value: 9.61

Examples 2:

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// 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);
        }
    }
}

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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:

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// 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);
        }
    }
}

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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:

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// 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);
        }
    }
}

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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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