ponerLargo(valor int)
El método putLong(int value) de java.nio.ByteBuffer Class se usa para escribir ocho bytes que contienen el valor largo dado, en el orden de bytes actual, en este búfer en la posición actual y luego incrementa la posición en ocho.
Sintaxis:
public abstract ByteBuffer putLong(long value)
Parámetros: Este método toma el valor largo a escribir.
Valor devuelto: este método devuelve este búfer.
Excepción: este método arroja las siguientes excepciones:
- BufferOverflowException: si la posición actual de este búfer no es más pequeña que su límite
- ReadOnlyBufferException : si este búfer es de solo lectura
A continuación se muestran los ejemplos para ilustrar el método putLong (valor largo):
Ejemplo 1:
// Java program to demonstrate
// putLong() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 24;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// putting the value in ByteBuffer
// using putLong() method
bb.putLong(23)
.putLong(24)
.putLong(30)
.rewind();
// print the ByteBuffer
System.out.print("Original ByteBuffer: [ ");
for (int i = 1; i <= capacity / 8; i++)
System.out.print(bb.getLong() + " ");
System.out.print("]");
}
catch (BufferOverflowException e) {
System.out.println("Exception throws : " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws : " + e);
}
}
}
Producción:
Original ByteBuffer: [ 23 24 30 ]
Ejemplo 2: Para demostrar BufferOverflowException.
// Java program to demonstrate
// putLong() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 24;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// putting the value in ByteBuffer
// using putLong() method
bb.putLong(23)
.putLong(24)
.putLong(30)
.rewind();
// print the ByteBuffer
System.out.print("Original ByteBuffer: [ ");
for (int i = 1; i <= capacity / 8; i++)
System.out.print(bb.getLong() + " ");
System.out.print("]");
// putting the value in ByteBuffer
// using putInt() method
bb.putLong(234);
}
catch (BufferOverflowException e) {
System.out.println("\n\nbuffer's current position"
+ " is not smaller than its limit");
System.out.println("Exception throws : " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws : " + e);
}
}
}
Producción:
Original ByteBuffer: [ 23 24 30 ] buffer's current position is not smaller than its limit Exception throws : java.nio.BufferOverflowException
Ejemplos 3: Para demostrar ReadOnlyBufferException.
// Java program to demonstrate
// putLong() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 24;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// putting the value in ByteBuffer
// using putLong() method
bb.putLong(23)
.putLong(24)
.putLong(30)
.rewind();
// print the ByteBuffer
System.out.print("Original ByteBuffer: [ ");
for (int i = 1; i <= capacity / 8; i++)
System.out.print(bb.getLong() + " ");
System.out.print("]");
// Creating a read-only copy of ByteBuffer
// using asReadOnlyBuffer() method
ByteBuffer bb1 = bb.asReadOnlyBuffer();
System.out.println("\n\nTrying to put the long value"
+ " in read-only buffer");
// putting the value in readonly ByteBuffer
// using putLong() method
bb1.putLong(234);
}
catch (BufferOverflowException e) {
System.out.println("Exception throws : " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws : " + e);
}
}
}
Producción:
Original ByteBuffer: [ 23 24 30 ] Trying to put the long value in read only buffer Exception throws : java.nio.ReadOnlyBufferException
putLong(índice int, valor largo)
El método putLong(int index, long value) de java.nio.ByteBuffer Class se usa para escribir ocho bytes que contienen el valor de ocho bytes dado, en el orden de bytes actual, en este búfer en el índice dado.
Sintaxis:
public abstract ByteBuffer putLong(int index, long value)
Parámetros: Este método toma los siguientes argumentos como parámetro:
- index : el índice en el que se escribirá el byte
- value : El valor int que se va a escribir
Valor devuelto: este método devuelve este búfer.
Excepción: este método arroja la siguiente excepción:
- IndexOutOfBoundsException: si el índice es negativo o no más pequeño que el límite del búfer
- ReadOnlyBufferException : si este búfer es de solo lectura
A continuación se muestran los ejemplos para ilustrar el método putLong(índice int, valor largo):
Ejemplo 1:
// Java program to demonstrate
// putLong() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 24;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// putting the value in ByteBuffer
// using putLong() at index 0
bb.putLong(0, 23);
// putting the value in ByteBuffer
// using putInt() at index 8
bb.putLong(8, 34);
// putting the value in ByteBuffer
// using putInt() at index 16
bb.putLong(16, 27);
// rewinding the ByteBuffer
bb.rewind();
// print the ByteBuffer
System.out.print("Original ByteBuffer: [ ");
for (int i = 1; i <= capacity / 8; i++)
System.out.print(bb.getLong() + " ");
System.out.print("]\n");
}
catch (IndexOutOfBoundsException e) {
System.out.println("Exception throws : " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws : " + e);
}
}
}
Producción:
Original ByteBuffer: [ 23 34 27 ]
Ejemplo 2: Para demostrar IndexOutOfBoundsException.
// Java program to demonstrate
// putLong() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 24;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// putting the value in ByteBuffer
// using putLong() at index 0
bb.putLong(0, 23);
// putting the value in ByteBuffer
// using putInt() at index 8
bb.putLong(8, 34);
// putting the value in ByteBuffer
// using putInt() at index 16
bb.putLong(16, 27);
// rewinding the ByteBuffer
bb.rewind();
// print the ByteBuffer
System.out.print("Original ByteBuffer: [ ");
for (int i = 1; i <= capacity / 8; i++)
System.out.print(bb.getLong() + " ");
System.out.print("]\n");
// putting the value in ByteBuffer
// using putInt() at index -1
bb.putInt(-1, 45);
}
catch (IndexOutOfBoundsException e) {
System.out.println("\nindex is negative or not smaller "
+ "than the buffer's limit");
System.out.println("Exception throws : " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws : " + e);
}
}
}
Producción:
Original ByteBuffer: [ 23 34 27 ] index is negative or not smaller than the buffer's limit Exception throws : java.lang.IndexOutOfBoundsException
Ejemplo 3: Para demostrar ReadOnlyBufferException.
// Java program to demonstrate
// putLong() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 24;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// Creating a read-only copy of ByteBuffer
// using asReadOnlyBuffer() method
ByteBuffer bb1 = bb.asReadOnlyBuffer();
System.out.println("Trying to put the long value"
+ " in read-only buffer");
// putting the value in readonly ByteBuffer
// using putLong() method
bb1.putLong(0, 23);
}
catch (IndexOutOfBoundsException e) {
System.out.println("Exception throws : " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws : " + e);
}
}
}
Producción:
Trying to put the long value in read only buffer Exception throws : java.nio.ReadOnlyBufferException
Referencia:
- https://docs.oracle.com/javase/9/docs/api/java/nio/ByteBuffer.html#putLong-long-
- https://docs.oracle.com/javase/9/docs/api/java/nio/ByteBuffer.html#putLong-int-long-
Publicación traducida automáticamente
Artículo escrito por RohitPrasad3 y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA