public static ShortBuffer allocate(int capacity)

// 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 ShortBuffer
        int capacity = 5;
 
        // Creating the ShortBuffer
 
        // creating object of Shortbuffer
        // and allocating size capacity
        ShortBuffer sb = ShortBuffer.allocate(capacity);
 
        // putting the value in Shortbuffer
        sb.put((short)10000);
        sb.put((short)10640);
        sb.put((short)10189);
        sb.put((short)-2000);
        sb.put((short)-16780);
 
        // Printing the ShortBuffer
        System.out.println("ShortBuffer: "
                           + Arrays.toString(sb.array()));
    }
}

ShortBuffer: [10000, 10640, 10189, -2000, -16780]

// 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 ShortBuffer
        // by negative integer
        int capacity = -10;
 
        // Creating the ShortBuffer
        try {
 
            // creating object of shortbuffer
            // 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);
        }
    }
}

Trying to allocate a negative integer
Exception thrown: java.lang.IllegalArgumentException: capacity < 0: (-10 < 0)