Scanner close() method in Java with Examples
The close() method ofjava.util.Scanner class closes the scanner which has been opened. If the scanner is already closed then on calling this method, it will have no effect.
Syntax:
public void close()
Return Value: The function does not return any value.
Below programs illustrate the above function:
Program 1:
import java.util.*;
public class GFG1 {
public static void main(String[] argv)
throws Exception
{
try {
String s = "Geeksforgeeks has Scanner Class Methods" ;
Scanner scanner = new Scanner(s);
System.out.println( "Scanner: "
+ scanner.nextLine());
scanner.close();
System.out.println( "\nScanner Closed.\n" );
System.out.println( "Trying to use scanner"
+ " after closing." );
System.out.println(scanner.nextLine());
}
catch (Exception e) {
System.out.println( "Exception thrown:\n" + e);
}
}
}
|
Output:
Scanner: Geeksforgeeks has Scanner Class Methods
Scanner Closed.
Trying to use scanner after closing.
Exception thrown:
java.lang.IllegalStateException: Scanner closed
Reference: https://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html#close()
Last Updated :
10 Oct, 2018
Like Article
Save Article
Share your thoughts in the comments
Please Login to comment...