Why won't this work?

Question

Code: import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String text = scanner.nextLine();
char[] arr = text.toCharArray();

//your code goes here
int arrayLength;
arrayLength = arr.length();

String result;

for (int arrLength = arrayLength - 1; arrLength >= 0; arrLength--) {
char transResult = arr[arrLength];
result += transResult;
}
System.out.println(result);
}
}

Error Message:

/usercode/Program.java:12: error: cannot find symbol
arrayLength = arr.length();
^
symbol: method length()
location: variable arr of type char[]
1 error

Answer 1

And you need to initialize String result.

String result = "";

Btw: you don't need an extra variable for arr.length, you can just use arr.length directly.

for(int arrLength = arr.length - 1; arr.length >= 0; arrLength--){

}

Answer 2

length is a property, so it would be arr.length instead of arr.length().