Java basics
nextLong()
The java.util.Scanner.nextLong() method scans the next token of the input as a long.An invocation of this method of the form nextLong() behaves in exactly the same way as the invocation nextLong(radix), where radix is the default radix of this scanner.
Syntax:no such syntax exists
Example:import java.util.*;
public class ScannerDemo {
public static void main(String[] args) {
String s = "Hello World! 3 + 3.0 = 6.0 true ";
Long l = 13964599874l;
s = s + l;
// create a new scanner with the specified String Object
Scanner scanner = new Scanner(s);
// find the next long token and print it
// loop for the whole scanner
while (scanner.hasNext()) {
// if no long is found, print "Not Found:" and the token
System.out.println("Not Found :" + scanner.next());
// if the next is a long, print found and the long
if (scanner.hasNextLong()) {
System.out.println("Found :" + scanner.nextLong());
}
}
// close the scanner
scanner.close();
}
}
Output:
Not Found :Hello
Not Found :World!
Found :3
Not Found :+
Not Found :3.0
Not Found :=
Not Found :6.0
Not Found :true
Found :13964599874
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