Exception in thread "main" java.lang.NumberFormatException: For input string: "x" for Java code  public class Finder { //Write two recursive functions, both of which will parse any length string that consists of digits and numbers. Both functions //should be in the same class and have the following signatures. //use the if/else statement , Find the base case and -1 till you get to base case //recursive function that adds up the digits in the String publicstaticint sumIt(String s) { //if String length is less or equal to 1 retrun 1. if (s.length()<= 1){ return Integer.parseInt(s); }else{ //use Integer.praseInt(s) to convert string to Integer //returns the interger values     //else if the CharAt(value in index at 0 = 1) is not equal to the last vaule in the string else {//return the numeric values of a char value + call the SumIt method with a substring = 1 return Character.getNumericValue(s.charAt(0) ) + sumIt(s.substring(1)); } }     //write a recursion function that will find the largest interger in the string. publicstaticint findMax(String s,intmax) {//check the characters of the string is greater than 0 if(s.length() == 0) { returnmax; } if(s.substring(0, 1).matches("[0-9]")) { intend = 1; while(end < s.length() && s.substring(end, end+1).matches("[0-9]")) { end++; }//create varabile to convert to string with ( 0,end) inta = Integer.parseInt(s.substring(0, end)); if(a > max) {// call findMax(use s.substring(end),a) returnfindMax(s.substring(end), a); }//call again elsereturnfindMax(s.substring(end), max); }//call again elsereturnfindMax(s.substring(1), max); } //input string result //"1d2d3d" 6 //"55" 10 //"xx" 0   //input string result //"12x8" 12 //"012x88" 88 //"012x88ttttt9xe33ppp100" 100   //Testing publicstaticvoid main(String[] args) {   String a = "12X8"; String b = "55"; String c = "xx"; String d = "12x8"; String e = "012x88"; String f = "012x88ttttt9xe33ppp100"; System.out.println(sumIt(a)); System.out.println (sumIt(b)); System.out.println (sumIt(c)); System.out.println (findMax(d, 0)); System.out.println (findMax(e,0)); System.out.println (findMax(f,0));   } }

public class Finder {

//Write two recursive functions, both of which will parse any length string that consists of digits and numbers. Both functions

//should be in the same class and have the following signatures.

//use the if/else statement , Find the base case and -1 till you get to base case

//recursive function that adds up the digits in the String

publicstaticint sumIt(String s)

{

//if String length is less or equal to 1 retrun 1.

if (s.length()<= 1){

return Integer.parseInt(s);

}else{

//use Integer.praseInt(s) to convert string to Integer

//returns the interger values

//else if the CharAt(value in index at 0 = 1) is not equal to the last vaule in the string else {//return the numeric values of a char value + call the SumIt method with a substring = 1

return Character.getNumericValue(s.charAt(0) ) + sumIt(s.substring(1));

}

}

//write a recursion function that will find the largest interger in the string.

publicstaticint findMax(String s,intmax)

{//check the characters of the string is greater than 0

if(s.length() == 0) {

returnmax;

}

if(s.substring(0, 1).matches("[0-9]")) {

intend = 1;

while(end < s.length() && s.substring(end, end+1).matches("[0-9]")) {

end++;

}//create varabile to convert to string with ( 0,end)

inta = Integer.parseInt(s.substring(0, end));

if(a > max) {// call findMax(use s.substring(end),a)

returnfindMax(s.substring(end), a);

}//call again

elsereturnfindMax(s.substring(end), max);

}//call again

elsereturnfindMax(s.substring(1), max);

}

//input string result

//"1d2d3d" 6

//"55" 10

//"xx" 0

//input string result

//"12x8" 12

//"012x88" 88

//"012x88ttttt9xe33ppp100" 100

//Testing

publicstaticvoid main(String[] args) {

String a = "12X8";

String b = "55";

String c = "xx";

String d = "12x8";

String e = "012x88";

String f = "012x88ttttt9xe33ppp100";

System.out.println(sumIt(a));

System.out.println (sumIt(b));

System.out.println (sumIt(c));

System.out.println (findMax(d, 0));

System.out.println (findMax(e,0));

System.out.println (findMax(f,0));

}

}