The java.util.concurrent.ConcurrentSkipListSet.isEmpty() method is an in-built function in Java which is used to check if this set is empty or not.
Syntax:
ConcurrentSkipListSet.isEmpty()
Parameters: The function does not accepts any parameter.
Return Value: The function returns a boolean value. It returns true if the ConcurrentSkipListSet is empty and returns false otherwise.
Below programs illustrate the ConcurrentSkipListSet.IsEmpty() method:
Program 1: In this program the ConcurrentSkipListSet is non-empty.
// Java Program to demonstrate isEmpty() // method of ConcurrentSkipListSet() import java.util.concurrent.*;
class ConcurrentSkipListSetIsEmptyExample1 {
public static void main(String[] args)
{
// Creating a set object
ConcurrentSkipListSet<Integer> Lset =
new ConcurrentSkipListSet<Integer>();
// Adding elements to this set
for ( int i = 10 ; i <= 50 ; i += 10 )
Lset.add(i);
// Checks if this set is empty or not
if (Lset.isEmpty())
System.out.println( "The set is empty." );
else
System.out.println( "The set is non-empty." );
}
} |
The set is non-empty.
Program 2: In this program the ConcurrentSkipListSet is empty.
// Java program to demonstrate isEmpty() // method of ConcurrentSkipListSet() import java.util.concurrent.*;
class ConcurrentSkipListSetIsEmptyExample2 {
public static void main(String[] args)
{
// Creating a set object
ConcurrentSkipListSet<Integer> Lset =
new ConcurrentSkipListSet<Integer>();
// Checks if this set is empty or not
if (Lset.isEmpty())
System.out.println( "The set is empty." );
else
System.out.println( "The set is non-empty." );
}
} |
The set is empty.
Reference : https://docs.oracle.com/javase/7/docs/api/java/util/concurrent/ConcurrentSkipListSet.html#add(E)