IntBuffer put(int, int) in Java

put(int, int): This method is available in java.nio.IntBuffer class of Java.

Syntax:

IntBuffer java.nio.IntBuffer.put(int index, int i)

This method takes two arguments of type int as its parameter. This method writes the given int into this buffer at the given index.

Parameters: Two parameters are required for this method.

index: The index at which the int will be written.

i: The int value to be written.

Returns: This buffer.

Throws:

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

2. ReadOnlyBufferException - If this buffer is read-only

Approach 1: When no exceptions

Java

import java.nio.IntBuffer;

public class IntBufferput4 {
    public static void main(String[] args) {

        int array[] = { 1, 2, 3, 4 };
        IntBuffer lb = IntBuffer.wrap(array);

        int index = 0;
        int i = 100;

        System.out.println(lb.put(index, i));
    }
}

Output:

java.nio.HeapIntBuffer[pos=0 lim=4 cap=4]

Approach 2: IndexOutOfBoundsException 

Java

import java.nio.IntBuffer;

public class IntBufferput4 {
    public static void main(String[] args) {

        int array[] = { 1, 2, 3, 4 };
        IntBuffer lb = IntBuffer.wrap(array);

        int index = -1;
        int i = 100;

        System.out.println(lb.put(index, i));
    }
}

Output:

Exception in thread "main" java.lang.IndexOutOfBoundsException
	at java.base/java.nio.Buffer.checkIndex(Buffer.java:738)
	at java.base/java.nio.HeapIntBuffer.put(HeapIntBuffer.java:222)
	

Approach 3: ReadOnlyBufferException 

Java

import java.nio.IntBuffer;

public class IntBufferput4 {
    public static void main(String[] args) {

        int array[] = { 1, 2, 3, 4 };
        IntBuffer lb = IntBuffer.wrap(array);

        int index = 0;
        int i = 100;

        IntBuffer readOnly = lb.asReadOnlyBuffer();
        System.out.println(readOnly.put(index, i));
    }
}

Output:

Exception in thread "main" java.nio.ReadOnlyBufferException
	at java.base/java.nio.HeapIntBufferR.put(HeapIntBufferR.java:225)