Combining the patterns

Bigger programs combine the patterns: read several values, calculate from them, decide, and print a sentence that uses the results. Here are two prices, and the program says which is cheaper and by how much:

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int shopA = Integer.valueOf(scanner.nextLine());
        int shopB = Integer.valueOf(scanner.nextLine());
        int difference = Math.abs(shopA - shopB);
        if (shopA < shopB) {
            System.out.println("Shop A is cheaper by " + difference);
        } else if (shopB < shopA) {
            System.out.println("Shop B is cheaper by " + difference);
        } else {
            System.out.println("Same price");
        }
    }
}

35
29

Shop B is cheaper by 6

The difference is worked out once, before the decision, and each branch uses it. The same plan works for most problems of this kind: read everything, calculate what the sentences need, then decide which sentence to print.