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ByteBuffer putInt() methods in Java with Examples

Last Updated : 19 Jan, 2023

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: 

Output:
Original ByteBuffer: [ 23 24 30 ]

Example 2: To demonstrate BufferOverflowException. 

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. 

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: 

Output:
Original ByteBuffer: [ 23 34 27 ]

Example 2: To demonstrate IndexOutOfBoundsException. 

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. 

Output:
Trying to put the int value in read only buffer
Exception throws : java.nio.ReadOnlyBufferException

Reference:

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