CopyOnWriteArraySet clear() method in Java
Last Updated :
26 Nov, 2018
The clear() method of CopyOnWriteArraySet erases all the elements in the Set. The size of the Set becomes zero after the function is called.
Syntax:
public void clear()
Return Value: The function does not returns anything.
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>();
ArrSet.add( 32 );
ArrSet.add( 67 );
ArrSet.add( 98 );
ArrSet.add( 98 );
System.out.println( "CopyOnWriteArraySet: "
+ ArrSet);
ArrSet.clear();
System.out.println( "\nCopyOnWriteArraySet cleared\n" );
System.out.println( "Updated CopyOnWriteArraySet: "
+ ArrSet);
}
}
|
Output:
CopyOnWriteArraySet: [32, 67, 98]
CopyOnWriteArraySet cleared
Updated CopyOnWriteArraySet: []
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( "jgec" );
System.out.println( "CopyOnWriteArraySet: "
+ ArrSet);
ArrSet.clear();
System.out.println( "\nCopyOnWriteArraySet cleared\n" );
System.out.println( "Updated CopyOnWriteArraySet: "
+ ArrSet);
}
}
|
Output:
CopyOnWriteArraySet: [gopal, gfg, jgec]
CopyOnWriteArraySet cleared
Updated CopyOnWriteArraySet: []
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArraySet.html#clear–
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