ByteBuffer get(int) in Java

get(int): This method is available in java.nio.ByteBuffer class of Java.

Syntax:

byte java.nio.ByteBuffer.get(int index)

This method takes one argument of type int as its parameter. This method reads the byte at the given index.

Parameters: One parameter is required for this method.

index: The index from which the byte will be read.

Returns: The byte at the given index.

Throws:

IndexOutOfBoundsException - If index is negative or not smaller than the buffer's limit

Approach 1: When no exceptions.

Java

import java.nio.ByteBuffer;

public class ByteBufferget3 {
    public static void main(String[] args) {

        byte array[] = { 1, 2, 3, 4 };
        ByteBuffer bb = ByteBuffer.wrap(array);

        int index = 2;
        System.out.println(bb.get(index));

    }
}

Output:

3

Approach 2: IndexOutOfBoundsException 

Java

import java.nio.ByteBuffer;

public class ByteBufferget3 {
    public static void main(String[] args) {

        byte array[] = { 1, 2, 3, 4 };
        ByteBuffer bb = ByteBuffer.wrap(array);

        int index = -1;
        System.out.println(bb.get(index));

    }
}jkda jk

Output:

Exception in thread "main" java.lang.IndexOutOfBoundsException
	at java.base/java.nio.Buffer.checkIndex(Buffer.java:738)
	at java.base/java.nio.HeapByteBuffer.get(HeapByteBuffer.java:171)