CopyOnWriteArraySet size() method in Java
Last Updated :
26 Nov, 2018
The size() method of CopyOnWriteArraySet returns the size of the Set. It returns the number of elements in the current Set.
Syntax:
public int size()
Return Value: The function returns the number of elements in the current Set.
Below programs illustrate the above function:
Program 1:
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
CopyOnWriteArraySet<Integer> ArrSet
= new CopyOnWriteArraySet<Integer>();
System.out.println( "CopyOnWriteArraySet: "
+ ArrSet);
System.out.println( "size of ArrSet: "
+ ArrSet.size());
ArrSet.add( 32 );
ArrSet.add( 67 );
ArrSet.add( 98 );
ArrSet.add( 100 );
System.out.println( "CopyOnWriteArraySet: "
+ ArrSet);
System.out.println( "size of ArrSet: "
+ ArrSet.size());
}
}
|
Output:
CopyOnWriteArraySet: []
size of ArrSet: 0
CopyOnWriteArraySet: [32, 67, 98, 100]
size of ArrSet: 4
Program 2:
import java.util.concurrent.CopyOnWriteArraySet;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
CopyOnWriteArraySet<String> ArrSet
= new CopyOnWriteArraySet<String>();
ArrSet.add( "gopal" );
ArrSet.add( "gfg" );
ArrSet.add( "jgec" );
ArrSet.add( "sudo" );
System.out.println( "CopyOnWriteArraySet: "
+ ArrSet);
System.out.println( "size of ArrSet: "
+ ArrSet.size());
}
}
|
Output:
CopyOnWriteArraySet: [gopal, gfg, jgec, sudo]
size of ArrSet: 4
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArraySet.html#size–
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