/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		 String text = "Digito123";
 
        int count = 0;
        for (int i = 0, len = text.length(); i < len; i++) {
          if (Character.isDigit(text.charAt(i))) {
           count++;
          }
        }
 
        System.out.print(count);
	}
}

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