ByteBuffer putInt() methods in Java with Examples
Last Updated :
19 Jan, 2023
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putInt(int value)
The putInt(int value) method of java.nio.ByteBuffer Class is used to write four bytes containing the given int value, in the current byte order, into this buffer at the current position, and then increments the position by four.
Syntax :
public abstract ByteBuffer putInt(int value)
Parameters: This method takes the int value to be written as the parameter.
Return Value: This method returns this ByteBuffer.
Exception: This method throws the following exceptions:
- BufferOverflowException- If this buffer's current position is not smaller than its limit
- ReadOnlyBufferException- If this buffer is read-only
Below are the examples to illustrate the putInt(int value) method:
Example 1:
// Java program to demonstrate
// putInt() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 12;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// putting the value in ByteBuffer
// using putInt() method
bb.putInt(23)
.putInt(24)
.putInt(30)
.rewind();
// print the ByteBuffer
System.out.print("Original ByteBuffer: [ ");
for (int i = 1; i <= capacity / 4; i++)
System.out.print(bb.getInt() + " ");
System.out.print("]");
}
catch (BufferOverflowException e) {
System.out.println("Exception throws : " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws : " + e);
}
}
}
// Java program to demonstrate// putInt() methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the ByteBuffer int capacity = 12; // Creating the ByteBuffer try { // creating object of ByteBuffer // and allocating size capacity ByteBuffer bb = ByteBuffer.allocate(capacity); // putting the value in ByteBuffer // using putInt() method bb.putInt(23) .putInt(24) .putInt(30) .rewind(); // print the ByteBuffer System.out.print("Original ByteBuffer: [ "); for (int i = 1; i <= capacity / 4; i++) System.out.print(bb.getInt() + " "); System.out.print("]"); } catch (BufferOverflowException e) { System.out.println("Exception throws : " + e); } catch (ReadOnlyBufferException e) { System.out.println("Exception throws : " + e); } }}Output:
Original ByteBuffer: [ 23 24 30 ]
Example 2: To demonstrate BufferOverflowException.
// Java program to demonstrate
// putInt() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 12;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// putting the value in ByteBuffer
// using putInt() method
bb.putInt(23)
.putInt(24)
.putInt(30)
.rewind();
// print the ByteBuffer
System.out.print("Original ByteBuffer: [ ");
for (int i = 1; i <= capacity / 4; i++)
System.out.print(bb.getInt() + " ");
System.out.print("]");
// putting the value in ByteBuffer
// using putInt() method
bb.putInt(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);
}
}
}
// Java program to demonstrate// putInt() methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the ByteBuffer int capacity = 12; // Creating the ByteBuffer try { // creating object of ByteBuffer // and allocating size capacity ByteBuffer bb = ByteBuffer.allocate(capacity); // putting the value in ByteBuffer // using putInt() method bb.putInt(23) .putInt(24) .putInt(30) .rewind(); // print the ByteBuffer System.out.print("Original ByteBuffer: [ "); for (int i = 1; i <= capacity / 4; i++) System.out.print(bb.getInt() + " "); System.out.print("]"); // putting the value in ByteBuffer // using putInt() method bb.putInt(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); } }}Output:
Original ByteBuffer: [ 23 24 30 ] buffer's current position is not smaller than its limit Exception throws : java.nio.BufferOverflowException
Examples 3: To demonstrate ReadOnlyBufferException.
// Java program to demonstrate
// putInt() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 12;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// putting the value in ByteBuffer
// using putInt() method
bb.putInt(23)
.putInt(24)
.putInt(30)
.rewind();
// print the ByteBuffer
System.out.print("Original ByteBuffer: [ ");
for (int i = 1; i <= capacity / 4; i++)
System.out.print(bb.getInt() + " ");
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 int value"
+ " in read-only buffer");
// putting the value in readonly ByteBuffer
// using putInt() method
bb1.putInt(234);
}
catch (BufferOverflowException e) {
System.out.println("Exception throws : " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws : " + e);
}
}
}
// Java program to demonstrate// putInt() methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the ByteBuffer int capacity = 12; // Creating the ByteBuffer try { // creating object of ByteBuffer // and allocating size capacity ByteBuffer bb = ByteBuffer.allocate(capacity); // putting the value in ByteBuffer // using putInt() method bb.putInt(23) .putInt(24) .putInt(30) .rewind(); // print the ByteBuffer System.out.print("Original ByteBuffer: [ "); for (int i = 1; i <= capacity / 4; i++) System.out.print(bb.getInt() + " "); 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 int value" + " in read-only buffer"); // putting the value in readonly ByteBuffer // using putInt() method bb1.putInt(234); } catch (BufferOverflowException e) { System.out.println("Exception throws : " + e); } catch (ReadOnlyBufferException e) { System.out.println("Exception throws : " + e); } }}Output:
Original ByteBuffer: [ 23 24 30 ] Trying to put the int value in read only buffer Exception throws : java.nio.ReadOnlyBufferException
putInt(int index, int value)
The putInt(int index, int value) method of java.nio.ByteBuffer Class is used to write four bytes containing the given four value, in the current byte order, into this buffer at the given index.
Syntax:
public abstract ByteBuffer putInt(int index, int value)
Parameters: This method takes the following arguments as a parameter:
- index: The index at which the byte will be written
- value: The int value to be written
Return Value: This method returns this buffer.
Exception: This method throws the following exception:
- IndexOutOfBoundsException- If index is negative or not smaller than the buffer's limit
- ReadOnlyBufferException- If this buffer is read-only
Below are the examples to illustrate the putInt(int index, int value) method:
Example 1:
// Java program to demonstrate
// putInt() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 12;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// putting the value in ByteBuffer
// using putInt() at index 0
bb.putInt(0, 23);
// putting the value in ByteBuffer
// using putInt() at index 4
bb.putInt(4, 34);
// putting the value in ByteBuffer
// using putInt() at index 8
bb.putInt(8, 27);
// rewinding the ByteBuffer
bb.rewind();
// print the ByteBuffer
System.out.print("Original ByteBuffer: [ ");
for (int i = 1; i <= capacity / 4; i++)
System.out.print(bb.getInt() + " ");
System.out.print("]\n");
}
catch (IndexOutOfBoundsException e) {
System.out.println("Exception throws : " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws : " + e);
}
}
}
// Java program to demonstrate// putInt() methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the ByteBuffer int capacity = 12; // Creating the ByteBuffer try { // creating object of ByteBuffer // and allocating size capacity ByteBuffer bb = ByteBuffer.allocate(capacity); // putting the value in ByteBuffer // using putInt() at index 0 bb.putInt(0, 23); // putting the value in ByteBuffer // using putInt() at index 4 bb.putInt(4, 34); // putting the value in ByteBuffer // using putInt() at index 8 bb.putInt(8, 27); // rewinding the ByteBuffer bb.rewind(); // print the ByteBuffer System.out.print("Original ByteBuffer: [ "); for (int i = 1; i <= capacity / 4; i++) System.out.print(bb.getInt() + " "); System.out.print("]\n"); } catch (IndexOutOfBoundsException e) { System.out.println("Exception throws : " + e); } catch (ReadOnlyBufferException e) { System.out.println("Exception throws : " + e); } }}Output:
Original ByteBuffer: [ 23 34 27 ]
Example 2: To demonstrate IndexOutOfBoundsException.
// Java program to demonstrate
// putInt() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 12;
// Creating the ByteBuffer
try {
// creating object of ByteBuffer
// and allocating size capacity
ByteBuffer bb = ByteBuffer.allocate(capacity);
// putting the value in ByteBuffer
// using putInt() at index 0
bb.putInt(0, 23);
// putting the value in ByteBuffer
// using putInt() at index 4
bb.putInt(4, 34);
// putting the value in ByteBuffer
// using putInt() at index 8
bb.putInt(8, 27);
// rewinding the ByteBuffer
bb.rewind();
// print the ByteBuffer
System.out.print("Original ByteBuffer: [ ");
for (int i = 1; i <= capacity / 4; i++)
System.out.print(bb.getInt() + " ");
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);
}
}
}
// Java program to demonstrate// putInt() methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the ByteBuffer int capacity = 12; // Creating the ByteBuffer try { // creating object of ByteBuffer // and allocating size capacity ByteBuffer bb = ByteBuffer.allocate(capacity); // putting the value in ByteBuffer // using putInt() at index 0 bb.putInt(0, 23); // putting the value in ByteBuffer // using putInt() at index 4 bb.putInt(4, 34); // putting the value in ByteBuffer // using putInt() at index 8 bb.putInt(8, 27); // rewinding the ByteBuffer bb.rewind(); // print the ByteBuffer System.out.print("Original ByteBuffer: [ "); for (int i = 1; i <= capacity / 4; i++) System.out.print(bb.getInt() + " "); 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); } }}Output:
Original ByteBuffer: [ 23 34 27 ] index is negative or not smaller than the buffer's limit Exception throws : java.lang.IndexOutOfBoundsException
Example 3: To demonstrate ReadOnlyBufferException.
// Java program to demonstrate
// putInt() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the ByteBuffer
int capacity = 12;
// 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 int value"
+ " in read-only buffer");
// putting the value in readonly ByteBuffer
// using putInt() method
bb1.putInt(0, 23);
}
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);
}
}
}
// Java program to demonstrate// putInt() methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the ByteBuffer int capacity = 12; // 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 int value" + " in read-only buffer"); // putting the value in readonly ByteBuffer // using putInt() method bb1.putInt(0, 23); } 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); } }}Output:
Trying to put the int value in read only buffer Exception throws : java.nio.ReadOnlyBufferException
Reference:
- https://docs.oracle.com/javase/9/docs/api/java/nio/ByteBuffer.html#putInt-int-
- https://docs.oracle.com/javase/9/docs/api/java/nio/ByteBuffer.html#putInt-int-int-
