LongBuffer get() methods in Java
Last Updated :
09 Jun, 2022
get()
The get() method of java.nio.LongBuffer Class is used to read the Long at the given buffer’s current position, and then increment the position.
Syntax :
public abstract Long get()
Return Value: This method returns the Long value at the buffer’s current position.
Throws: This method throws BufferUnderflowException – If the buffer’s current position is not smaller than its limit, then this exception is thrown.
Below are the examples to illustrate the get() method:
Example 1:
Java
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
int capacity = 5;
try {
LongBuffer ib = LongBuffer.allocate(capacity);
ib.put(8);
ib.put(9);
ib.put(1);
ib.rewind();
System.out.println("Original LongBuffer: "
+ Arrays.toString(ib.array()));
Long value = ib.get();
System.out.println("Long Value: " + value);
Long value1 = ib.get();
System.out.print("Next Long Value: " + value1);
}
catch (IllegalArgumentException e) {
System.out.println("IllegalArgumentException catched");
}
catch (ReadOnlyBufferException e) {
System.out.println("ReadOnlyBufferException catched");
}
catch (BufferUnderflowException e) {
System.out.println("Exception throws: " + e);
}
}
}
|
Output:
Original LongBuffer: [8, 9, 1, 0, 0]
Long Value: 8
Next Long Value: 9
Example 2:
Java
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
int capacity = 3;
try {
LongBuffer ib = LongBuffer.allocate(capacity);
ib.put(8);
ib.put(9);
System.out.println("Original LongBuffer: "
+ Arrays.toString(ib.array()));
Long value = ib.get();
System.out.println("Long Value: " + value);
System.out.print("Since the buffer current position is incremented");
System.out.print(" to greater than its limit ");
Long value1 = ib.get();
System.out.print("Next Long Value: " + value1);
}
catch (IllegalArgumentException e) {
System.out.println("IllegalArgumentException catched");
}
catch (ReadOnlyBufferException e) {
System.out.println("ReadOnlyBufferException catched");
}
catch (BufferUnderflowException e) {
System.out.println("Exception throws : " + e);
}
}
}
|
Output:
Original LongBuffer: [8, 9, 0]
Long Value: 0
Since the buffer current position is incremented to greater than its limit Exception throws : java.nio.BufferUnderflowException
get(Long index)
The get(Long index) method of LongBuffer is used to read the article at a specified index.
Syntax :
public abstract Long get(Long index)
Parameters: This method takes index (The index from which the Long will be read) as a parameter.
Return Value: This method returns the Long value at the given index.
Exception: This method throws IndexOutOfBoundsException. If index is negative or not smaller than the buffer’s limit this exception is thrown.
Below are the examples to illustrate the get(Long index) method:
Example 1:
Java
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
int capacity = 3;
try {
LongBuffer ib = LongBuffer.allocate(capacity);
ib.put(8);
ib.put(9);
ib.put(6);
System.out.println("Original LongBuffer: "
+ Arrays.toString(ib.array()));
Long value0 = ib.get(0);
System.out.println("Long Value at index 0: " + value0);
Long value1 = ib.get(1);
System.out.println("Long Value at index 1: " + value1);
Long value2 = ib.get(2);
System.out.println("Long Value at index 2: " + value2);
}
catch (IllegalArgumentException e) {
System.out.println("IllegalArgumentException catched");
}
catch (IndexOutOfBoundsException e) {
System.out.println("ReadOnlyBufferException catched");
}
catch (BufferUnderflowException e) {
System.out.println("Exception throws : " + e);
}
}
}
|
Output:
Original LongBuffer: [8, 9, 6]
Long Value at index 0: 8
Long Value at index 1: 9
Long Value at index 2: 6
Example 2:
Java
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
int capacity = 3;
try {
LongBuffer ib = LongBuffer.allocate(capacity);
ib.put(6);
ib.put(8);
ib.put(12);
System.out.println("Original LongBuffer: "
+ Arrays.toString(ib.array()));
Long value0 = ib.get(0);
System.out.println("Long Value at index 0: " + value0);
Long value1 = ib.get(1);
System.out.println("Long Value at index 1: " + value1);
System.out.println("Trying to get the Long"
+ " of index greater than its limit ");
Long value2 = ib.get(4);
System.out.println("Long Value at index 2: " + value2);
}
catch (IllegalArgumentException e) {
System.out.println("IllegalArgumentException catched");
}
catch (IndexOutOfBoundsException e) {
System.out.println("Exception thrown: " + e);
}
catch (BufferUnderflowException e) {
System.out.println("Exception throws : " + e);
}
}
}
|
Output:
Original LongBuffer: [6, 8, 12]
Long Value at index 0: 6
Long Value at index 1: 8
Trying to get the Long of index greater than its limit
Exception thrown: java.lang.IndexOutOfBoundsException
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