print("hello! world"

How do you solve this challenge? When I submit my code, it remains "unsolved" but it gave me full credit under the submissions tab.

Rust

fn main() {
    println!("Hello, World.");
    let mut input_string = String::new();
    std::io::stdin().read_line(&mut input_string);
    println!("{input_string}");
}

include print (hello world); return 0;

import java.io.; import java.util.; import java.text.; import java.math.; import java.util.regex.*; public class Solution { public static void main(String[] args) { // Create a Scanner object to read input from stdin. Scanner scan = new Scanner(System.in);

    // Read a full line of input from stdin and save it to our variable, inputString.
    String inputString = scan.nextLine(); 

    // Close the scanner object, because we've finished reading 
    // all of the input from stdin needed for this challenge.
    scan.close(); 

    // Print a string literal saying "Hello, World." to stdout.
    System.out.println("Hello, World.");
    System.out.println(inputString);

    // TODO: Write a line of code here that prints the contents of inputString to stdout.
}

}