Matrix

import java.util.Random;

public class Runner {

    public static void main(String[] args) {

        int[][] array = new int[10][5];
        fillArray(array);
        printArray(array);
        sortArrayByRowSum(array);
        System.out.println();
        printArray(array);
    }

    private static void fillArray(int[][] array) {
        final int MAX = 100;
        final int MIN = -100;

        for (int[] row : array) {
            for (int i = 0; i < row.length; i++) {
                row[i] = new Random().nextInt(MAX - MIN) + MIN;
            }
        }
    }

    private static void printArray(int[][] array) {
        for (int[] row : array) {
            for (int i : row) {
                System.out.printf("%4d ", i);
            }
            System.out.printf("|%4d\n", getRowSum(row));
        }
    }

    private static void sortArrayByRowSum(int[][] array) {
        for (int i = array.length - 1; i >= 1; i--) {
            for (int j = 0; j < i; j++) {
                if (getRowSum(array[j]) < getRowSum(array[j + 1])) {
                    int[] dummy = array[j];
                    array[j] = array[j + 1];
                    array[j + 1] = dummy;
                }
            }
        }
    }

    private static int getRowSum(int[] row) {
        int sum = 0;
        for (int i : row) {
            sum += i;
        }
        return sum;
    }
}