import java.util.*;

/**

* Code for Problem 1 of HW2

* @author

*/

public class ArraySum {

/**

Gets the sum of the numbers in "dataset".

@return sum of the numbers

*/

public int getSum(ArrayList dataset) {

int x = 0;

for(int i : dataset ){

x = x + i;

}

return x;

}

/**

Gets the sum of the positive numbers in "dataset".

@return sum of the positive numbers

*/

public int getSumPositive(ArrayList dataset) {

int x = 0;

for(int i : dataset ){

if(i > 0 )

x = x + i;

}

return x;

}

/**

Gets the maximum value in the array list "dataset".

@return maximum value of "dataset"

*/

public int getMaximum(ArrayList dataset)

{

int x = 0;

for(int i : dataset ){

if(i > x)

x = i;

}

return x;

}

}

Error: Main method not found in class Main, please define the main method as: public static void main(String[] args), or a JavaFX application class must extend javafx.application. Application