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 static void main(String args[]) {

ArraySum as = new ArraySum();

ArrayList dataset = new ArrayList();

dataset.add(1);

dataset.add(2);

dataset.add(3);

dataset.add(100);

dataset.add(-1);

dataset.add(0);

dataset.add(-10);

dataset.add(10);

dataset.add(20);

dataset.add(30);

System.out.println("Dataset: "+dataset.toString());

int sum = as.getSum(dataset);

System.out.println("Sum of dataset: "+sum);

int posSum = as.getSumPositive(dataset);

System.out.println("Sum of Positive Numbers of dataset: "+posSum);

int max = as.getMaximum(dataset);

System.out.println("maximum of the dataset: "+max);

}

Full Java Code:

import java.util.ArrayList;

public class ArraySum {

//Main method that displays the functionality of all the other methods

public static void main(String args[]) {

ArraySum as = new ArraySum();

ArrayList dataset = new ArrayList();

dataset.add(1);

dataset.add(2);

dataset.add(3);

dataset.add(100);

dataset.add(-1);

dataset.add(0);

dataset.add(-10);

dataset.add(10);

dataset.add(20);

dataset.add(30);

System.out.println("Dataset: "+dataset.toString());

int sum = as.getSum(dataset);

System.out.println("Sum of dataset: "+sum);

int posSum = as.getSumPositive(dataset);

System.out.println("Sum of Positive Numbers of dataset: "+posSum);

int max = as.getMaximum(dataset);

System.out.println("maximum of the dataset: "+max);

}

/**

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 Appendix A: Scanned Textbook Problems - P7.7 A theater seating chatt is implemented as a two-dimensional array of ticket prices, like this 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 20 20 20 20 20 20 10 10 10 10 20 20 20 20 20 20 10 10 10 10 20 20 20 20 20 20 10 10 20 20 30 30 40 40 30 30 20 20 20 30 30 40 50 50 40 30 30 20 30 40 50 50 50 50 50 50 40 30 Write a program that prompts users to pick either a seat or a price. Mark sold seats by changing the price to 0. When a user specifies a seat, make sure it is available. When a user specifies a price, find any seat with that price