What the heck is wrong with this code?! Please help.... import java.util. public

Question

What the heck is wrong with this code?! Please help....

import java.util.
public class PaintEstimator {
}
import java.lang.Math;
public class {
public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
double wallHeight = 0.0;
double wallWidth = 0.0;
double wallArea = 0.0;
double gallonsPaintNeeded = 0.0;
int cansNeeded = 0;

final double squareFeetPerGallons = 350.0;
final double gallonsPerCan = 1.0;

System.out.println("Enter wall height (feet): ");
wallHeight = scnr.nextDouble();

// Prompt user to input wall's width
System.out.println("Enter wall width (feet): ");
wallWidth = scnr.nextDouble();

// Calculate and output wall area
wallArea = wallHeight * wallWidth;
System.out.println("Wall area: square feet");

// Calculate and output the amount of paint in gallons needed to paint the wall
gallonsPaintNeeded = wallArea / squareFeetPerGallons;
System.out.println(" Paint needed: " + gallonsPaintNeeded + " gallons");

// Calculate and output the number of 1 gallon cans needed to paint the wall, rounded up to nearest integer
cansNeeded = (int)(Math.round(gallonsPaintNeeded) / gallonsPerCan); //Hint: this line is missing two operations
System.out.println(" Cans needed: " + Math.round(cansNeeded) + " can(s)");

return;
}
}

Explanation / Answer

write import statements outside the class

import java.util.*;
import java.lang.Math;

public class PaintEstimator
{

public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
double wallHeight = 0.0;
double wallWidth = 0.0;
double wallArea = 0.0;
double gallonsPaintNeeded = 0.0;
int cansNeeded = 0;

final double squareFeetPerGallons = 350.0;
final double gallonsPerCan = 1.0;

System.out.println("Enter wall height (feet): ");
wallHeight = scnr.nextDouble();

// Prompt user to input wall's width
System.out.println("Enter wall width (feet): ");
wallWidth = scnr.nextDouble();

// Calculate and output wall area
wallArea = wallHeight * wallWidth;
System.out.println("Wall area: "+wallArea+ " square feet");

// Calculate and output the amount of paint in gallons needed to paint the wall
gallonsPaintNeeded = wallArea / squareFeetPerGallons;
System.out.println(" Paint needed: " + gallonsPaintNeeded + " gallons");

// Calculate and output the number of 1 gallon cans needed to paint the wall, rounded up to nearest integer
cansNeeded = (int)(Math.round(gallonsPaintNeeded) / gallonsPerCan); //Hint: this line is missing two operations
System.out.println(" Cans needed: " + Math.round(cansNeeded) + " can(s)");

return;
}
}

output:

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