public class Main {
    public static String name; 
    public static void main(String[] args) {
        int x = 0;
        int[] arr = {20};
        name = "Vitalii"; 
        //only classes should be capitalized
        name = f(x, arr, name);
        System.out.println(x + " " + arr[0] + " " + name);
    }
 
    private static String f(int x, int[] arr, String name){
        x = 20;
        arr[0] =40;
        String newName = "Max";
        return newName;
    }
}

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