HomeWork2

Lesson2.java

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+package ru.gb.lesson2;
+
+public class Lesson2 {
+    public static void main(String[] args) {
+        String[][] arr = new String[][]{{"1", "1", "1", "1"}, {"0", "0", "0", "0"}, {"1", "1", "1", "1"}, {"1", "1", "1", "1"}};
+        for (int i = 0; i < arr.length; i++) {
+            for (int j = 0; j < arr[i].length; j++) {
+                System.out.print(arr[i][j] + " ");
+            }
+            System.out.println();
+        }
+        System.out.println();
+
+        try {
+            try {
+                int result = method(arr);
+                System.out.println("Сумма элементов массива: "+ result);
+            } catch (MyArraySizeException e) {
+                System.err.println("Размер массива превышен");
+            }
+        }
+        catch (MyArrayDataException e) {
+            System.err.println("Неправильное значение элемента массива");
+            System.err.println("Ошибка в ячейке: " + (e.i+1) + "x" + (e.j+1));
+        }
+    }
+    public static int method(String[][] arr) throws MyArraySizeException, MyArrayDataException {
+        int count = 0;
+        if (arr.length != 4) {
+            throw new MyArraySizeException();
+        }
+        for (int i = 0; i < arr.length; i++) {
+            if (arr[i].length != 4) {
+                throw new MyArraySizeException();
+            }
+            for (int j = 0; j < arr[i].length; j++) {
+                try {
+                    count = count + Integer.parseInt(arr[i][j]);
+                }
+                catch (NumberFormatException e) {
+                    throw new MyArrayDataException(i, j);
+                }
+            }
+        }
+        return count;
+    }
+}
+

MyArrayDataException.java

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+package ru.gb.lesson2;
+
+public class MyArrayDataException extends Exception {
+    public int i;
+    public int j;
+    MyArrayDataException(int i, int j) {
+        this.i = i;
+        this.j = j;
+    }
+}

MyArraySizeException.java

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+package ru.gb.lesson2;
+
+public class MyArraySizeException extends Exception {
+
+}