How do I fix this intellij java program: import java.util.Scanner; public class Practice { // Global Variables Scanner input = new Scanner(System.in); //Enables User Input // This is the entry point to the program method main public static void main(String[] args) { // Local Variables for main method char cSymbol = "$" int nNum1=18; int nNum2=21; question01(); question02(); question03(); question04(nNum1, nNum2); } public static void question01(String output); System.out.println("Please enter 'HelloWorld!'"); String userInput = scanner.nextLine();{ System.out.println("You entered: "+output); } public static void question02() { for(int i = 1; i <= 30; i++) { if(i % 3 == 0) { System.out.print(i + " "); } } System.out.println(); } public static void main(String[] args) { question02(); } } public static void question03(char cSymbol, String sOriginal, float fScore) { float recieved = fScore*2; String recieved = "Update"; char recieved ='%'; } public static int question04(int a, int b) { if (a > b) { return a; } else { return b; } } } }.