put(char i)
The put(char i) method of java.nio.CharBuffer Class is used to write the given character into the newly created char buffer at the current position and then increments the position.
Syntax :
public abstract CharBuffer put(char i)
Parameters: This method takes the char value i as a parameter which is to be written in char buffer.
Return Value: This method returns this buffer, in which the char value is inserted.
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 put(char i) method:
Example 1:
Java
// Java program to demonstrate// put(char i) methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the CharBuffer int capacity = 3; // Creating the CharBuffer try { // creating object of Charbuffer // and allocating size capacity CharBuffer cb = CharBuffer.allocate(capacity); // putting the value in Charbuffer using put() method cb.put('a'); cb.put('b'); cb.put('c'); cb.rewind(); // print the CharBuffer System.out.println("Original CharBuffer: " + Arrays.toString(cb.array())); } catch (BufferOverflowException e) { System.out.println("Exception throws : " + e); } catch (ReadOnlyBufferException e) { System.out.println("Exception throws : " + e); } }} |
Output:
Original CharBuffer: [a, b, c]
Example 2: To demonstrate BufferOverflowException.
Java
// Java program to demonstrate// put() methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the CharBuffer int capacity = 3; // Creating the CharBuffer try { // creating object of Charbuffer // and allocating size capacity CharBuffer cb = CharBuffer.allocate(capacity); // putting the value in Charbuffer using put() method cb.put('a'); cb.put('b'); cb.put('c'); System.out.println("Trying to put the Int at the " + "position more than its limit"); cb.put('d'); // rewind the Charbuffer cb.rewind(); // print the CharBuffer System.out.println("Original CharBuffer: " + Arrays.toString(cb.array())); } catch (BufferOverflowException e) { System.out.println("Exception throws : " + e); } catch (ReadOnlyBufferException e) { System.out.println("Exception throws : " + e); } }} |
Output:
Trying to put the Int at the position more than its limit Exception throws : java.nio.BufferOverflowException
Examples 3: To demonstrate ReadOnlyBufferException.
Java
// Java program to demonstrate// put() methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the CharBuffer int capacity = 3; // Creating the CharBuffer try { // creating object of Charbuffer // and allocating size capacity using allocate() method CharBuffer cb = CharBuffer.allocate(capacity); // Creating a read-only copy of CharBuffer // using asReadOnlyBuffer() method CharBuffer cb1 = cb.asReadOnlyBuffer(); System.out.println("Trying to put the Int value" + " in read only buffer"); // putting the value in readonly Charbuffer // using put() method cb1.put('a'); } catch (BufferOverflowException e) { 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
put(int index, char i)
The put(int index, char i) method of java.nio.CharBuffer Class is used to write the given int into the buffer at the given index.
Syntax:
public abstract CharBuffer put(int index, char i)
Parameters: This method takes the following arguments as a parameter:
- index: The index at which the char will be written
- i: The char 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 put(int index, char i) method:
Example 1:
Java
// Java program to demonstrate// put(int index,char i) methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the CharBuffer int capacity = 3; // Creating the CharBuffer try { // creating object of Charbuffer // and allocating size capacity CharBuffer cb = CharBuffer.allocate(capacity); // putting the value in Charbuffer using put() at index 0 cb.put(0, 'a'); // putting the value in Charbuffer using put() at index 2 cb.put(2, 'c'); // putting the value in Charbuffer using put() at index 1 cb.put(1, 'b'); // rewinding the Charbuffer cb.rewind(); // print the CharBuffer System.out.println("Original CharBuffer: " + Arrays.toString(cb.array())); } catch (IndexOutOfBoundsException e) { System.out.println("Exception throws : " + e); } catch (ReadOnlyBufferException e) { System.out.println("Exception throws : " + e); } }} |
Output:
Original CharBuffer: [a, b, c]
Example 2: To demonstrate IndexOutOfBoundsException.
Java
// Java program to demonstrate// put() methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the CharBuffer int capacity = 3; // Creating the CharBuffer try { // creating object of Charbuffer // and allocating size capacity CharBuffer cb = CharBuffer.allocate(capacity); // putting the value in Charbuffer // using put() at index 0 cb.put(0, 'c'); // putting the value in Charbuffer // using put() at index 2 cb.put(2, 'b'); // putting the value in Charbuffer // using put() at index -1 System.out.println("Trying to put the value" + " at the negative index"); cb.put(-1, 'a'); } catch (IndexOutOfBoundsException e) { System.out.println("Exception throws : " + e); } catch (ReadOnlyBufferException e) { System.out.println("Exception throws : " + e); } }} |
Output:
Trying to put the value at the negative index Exception throws : java.lang.IndexOutOfBoundsException
Example 3: To demonstrate ReadOnlyBufferException.
Java
// Java program to demonstrate// put() methodimport java.nio.*;import java.util.*;public class GFG { public static void main(String[] args) { // Declaring the capacity of the CharBuffer int capacity = 3; // Creating the CharBuffer try { // creating object of Charbuffer // and allocating size capacity using allocate() method CharBuffer cb = CharBuffer.allocate(capacity); // Creating a read-only copy of CharBuffer // using asReadOnlyBuffer() method CharBuffer cb1 = cb.asReadOnlyBuffer(); System.out.println("Trying to put the Int value" + " in read only buffer"); // putting the value in readonly Charbuffer // using put() method cb1.put(0, 'a'); } catch (BufferOverflowException e) { 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
