Java java.nio.LongBuffer用法及代码示例

// Java program to demonstrate LongBuffer class
// Importing input output classes
import java.nio.*;
// Importing all utility classes
import java.util.*;
// Main Class
public class GFG {
    // Main driver method
    public static void main(String[] args)
    {
        // Declaring and initializing variable to
        // the capacity of the LongBuffer
        int capacity = 5;
        // try block to check for exceptions
        try {
            // creating object of Longbuffer
            // and allocating size capacity
            LongBuffer ib = LongBuffer.allocate(capacity);
            // Adding elements to the objects of Longbuffer
            // class
            // using the pur() method
            ib.put(9);
            ib.put(8);
            ib.put(5);
            ib.rewind();
            // print the original LongBuffer
            // using standard toString() method
            System.out.println(
                "Original LongBuffer: "
                + Arrays.toString(ib.array()));
            // Reads the Long at this buffer's current
            // position using get() method
            Long value = ib.get();
            // Print the Long value
            System.out.println("Long Value: " + value);
            // Reads the Long at this buffer's next position
            // using get() method
            Long value1 = ib.get();
            // Agan, now print the Long value
            System.out.print("Next Long Value: " + value1);
        }
        // Catch blocks to handle the exceptions
        // Catch block 1
        catch (IllegalArgumentException e) {
            // Print the message when there is illegal
            // arguments
            System.out.println(
                "IllegalArgumentException catched");
        }
        // Catch block 2
        catch (ReadOnlyBufferException e) {
            // Print statement when an exception is encountered
            System.out.println(
                "ReadOnlyBufferException catched");
        }
        // Catch block 3
        catch (BufferUnderflowException e) {
            // Print statement when an exception is encountered
            System.out.println("Exception throws: " + e);
        }
    }
}

// Java program to demonstrate LongBuffer class
// Importing required libraries
import java.nio.*;
import java.util.*;
// Main Class
public class GFG {
    public static void main(String[] args)
    {
        // Declaring and initializing variable to
        // capacity of the LongBuffer
        int Capacity = 10;
        // Creating the LongBuffer
        // creating object of Longbuffer
        // and allocating size capacity
        LongBuffer ib = LongBuffer.allocate(Capacity);
        // Inserting the value in Longbuffer
        // Custom entries
        ib.put(11);
        ib.put(5, 22);
        // Print all the elements inside Longbuffer by
        // use of Arrays.toString() method
        System.out.println("LongBuffer: "
                           + Arrays.toString(ib.array()));
    }
}