Scanner.hasNextDouble() has the following syntax.
public boolean hasNextDouble()
In the following code shows how to use Scanner.hasNextDouble() method.
import java.util.Locale; import java.util.Scanner; /*from ww w. j av a2 s .c o m*/ public class Main { public static void main(String[] args) { String s = "java2s.com 1 + 1 = 2.0 1.3985"; Scanner scanner = new Scanner(s); // assign locale as US to recognize double numbers in a string scanner.useLocale(Locale.US); while (scanner.hasNext()) { // check if the scanner's next token is a double System.out.println(scanner.hasNextDouble()); System.out.println(scanner.next()); } scanner.close(); } }
The code above generates the following result.