Answer:
import java.util.Scanner;
public class BasicInput {
    public static void main(String[] args) {
        //Create an object of the Scanner class
        Scanner scnr = new Scanner(System.in);
        
        //Define int and double variables
        int userInt;
        double userDouble;
        
        //Define char and string variables similarly
        char userChar;
        String userString;
        
        //Prompt the user to enter an integer
        System.out.println("Enter integer:");
        //Store the input in the integer variable
        userInt = scnr.nextInt();
        
        //Prompt the user to enter a double
         System.out.println("Enter double:");
        //Store the input in the double variable
        userDouble = scnr.nextDouble();
        
        //Prompt the user to enter a char
         System.out.println("Enter char:");
        //Store the input in the char variable
        userChar = scnr.next().charAt(0);
        
        //Prompt the user to enter a string
         System.out.println("Enter String:");
        //Store the input in the string variable
        userString = scnr.next();
        
        //Output the four values on a single line
        //separated by a space
        System.out.println(userInt + " " + userDouble + " " + userChar + " " + userString);
        
    }
    
}
Sample Output:
Enter integer:
>>12
Enter double:
>>23
Enter char:
>>s
Enter String:
>>asdasd
12 23.0 s asdasd
Explanation:
The code above has been written in Java. It contains comments explaining every part of the code. Please go through the comments.