Do the Random2DArrayAnd the tester is at the bottom import java.util.Random;/** * Store a 2-D array and provide methods to * get the average values of any row, any * column, or the entire array. * * Step 1: Enter your name for @author and today's date for @version * @author * @version */public class Random2DArray{ public final int LOW_LIMIT = -10; public final int HIGH_LIMIT = 10; // Step 2: Declare an instance variable of a 2-D // array of int // Step 3: Complete the constructor /** * Constructs an object of class Random2DArray * by initializing the instance variable to * the passed in parameter. * * @param array a 2-D array of int */ public Random2DArray(int[][] array) { } // Step 4: Complete the constructor /** * Constructs an object of class Random2DArray. * It creates a 2-D array of int with the * specified rows and columns for the instance * variable, then creates a Random object with * the specified seed and use it to fill the * entire array with random numbers in the * range of [LOW_LIMIT, HIGH_LIMIT]. * * @param rows number of rows of the 2-D array * @param cols number of columns of the 2-D array * @param seed the seed of the Random generator */ public Random2DArray(int rows, int cols, int seed) { } // Step 5: Complete method rowAverage() /** * Gets the average value of the specified row. * * You should use the enhanced for loop. * * @param rowIndex the index of the specified row * @return the double average of the specified row */ public double rowAverage(int rowIndex) { } // Step 6: Complete method colAverage() /** * Gets the average value of the specified column. * * @param colIndex the index of the specified column * @return the double average of the specified column */ public double colAverage(int colIndex) { } // Step 7: Complete method arrayAverage() /** * Gets the average value of the entire array. * * @return the double average of the entire array */ public double arrayAverage() { }}TESTERpublic class Random2DArrayTester{ public static void main(String[] args) { int[][] array123 = { {1, 2, 3, 4, 5, 6, 7}, {2, 3, 4, 5, 6, 7, 8}, {3, 4, 5, 6, 7, 8, 9} }; Random2DArray arrayOne = new Random2DArray(array123); Random2DArray arrayTwo = new Random2DArray(5, 11, 123); Random2DArray arrayThree = new Random2DArray(11, 5, -123); int rowIndex = 0; double average = arrayOne.rowAverage(rowIndex); System.out.printf("The row average: %.2f.%n", average); System.out.println("Expected: 4.00."); average = arrayTwo.rowAverage(rowIndex); System.out.printf("The row average: %.2f.%n", average); System.out.println("Expected: -0.36."); average = arrayThree.rowAverage(rowIndex); System.out.printf("The row average: %.2f.%n", average); System.out.println("Expected: -7.40."); int colIndex = 2; average = arrayOne.colAverage(colIndex); System.out.printf("The column average: %.2f.%n", average); System.out.println("Expected: 4.00."); average = arrayTwo.colAverage(colIndex); System.out.printf("The column average: %.2f.%n", average); System.out.println("Expected: 1.00."); average = arrayThree.colAverage(colIndex); System.out.printf("The column average: %.2f.%n", average); System.out.println("Expected: -2.00."); average = arrayOne.arrayAverage(); System.out.printf("The average of the 2-D array: %.2f.%n", average); System.out.println("Expected: 5.00."); average = arrayTwo.arrayAverage(); System.out.printf("The average of the 2-D array: %.2f.%n", average); System.out.println("Expected: -1.31."); average = arrayThree.arrayAverage(); System.out.printf("The average of the 2-D array: %.2f.%n", average); System.out.println("Expected: -0.27."); }}

Question

Do the Random2DArrayAnd the tester is at the bottom import java.util.Random;/** * Store a 2-D array and provide methods to * get the average values of any row, any * column, or the entire array. * * Step 1: Enter your name for @author and today's date for @version * @author   * @version  */public class Random2DArray{    public final int LOW_LIMIT = -10;    public final int HIGH_LIMIT = 10;        // Step 2: Declare an instance variable of a 2-D    //         array of int        // Step 3: Complete the constructor    /**     * Constructs an object of class Random2DArray     * by initializing the instance variable to     * the passed in parameter.     *      * @param array a 2-D array of int     */    public Random2DArray(int[][] array)    {        }    // Step 4: Complete the constructor    /**     * Constructs an object of class Random2DArray.     * It creates a 2-D array of int with the      * specified rows and columns for the instance     * variable, then creates a Random object with     * the specified seed and use it to fill the     * entire array with random numbers in the      * range of [LOW_LIMIT, HIGH_LIMIT].     *      * @param rows number of rows of the 2-D array     * @param cols number of columns of the 2-D array     * @param seed the seed of the Random generator     */    public Random2DArray(int rows, int cols, int seed)    {    }    // Step 5: Complete method rowAverage()    /**     * Gets the average value of the specified row.     *      * You should use the enhanced for loop.     *     * @param  rowIndex the index of the specified row     * @return the double average of the specified row     */    public double rowAverage(int rowIndex)    {    }        // Step 6: Complete method colAverage()    /**     * Gets the average value of the specified column.     *     * @param  colIndex the index of the specified column     * @return the double average of the specified column     */    public double colAverage(int colIndex)    {    }        // Step 7: Complete method arrayAverage()    /**     * Gets the average value of the entire array.     *     * @return the double average of the entire array     */    public double arrayAverage()    {    }}TESTERpublic class Random2DArrayTester{    public static void main(String[] args)    {        int[][] array123 = { {1, 2, 3, 4, 5, 6, 7},                             {2, 3, 4, 5, 6, 7, 8},                             {3, 4, 5, 6, 7, 8, 9} };                                                                 Random2DArray arrayOne = new Random2DArray(array123);                Random2DArray arrayTwo = new Random2DArray(5, 11, 123);                Random2DArray arrayThree = new Random2DArray(11, 5, -123);        int rowIndex = 0;                double average = arrayOne.rowAverage(rowIndex);        System.out.printf(&#34;The row average: %.2f.%n&#34;, average);        System.out.println(&#34;Expected: 4.00.&#34;);                average = arrayTwo.rowAverage(rowIndex);        System.out.printf(&#34;The row average: %.2f.%n&#34;, average);        System.out.println(&#34;Expected: -0.36.&#34;);                average = arrayThree.rowAverage(rowIndex);        System.out.printf(&#34;The row average: %.2f.%n&#34;, average);        System.out.println(&#34;Expected: -7.40.&#34;);        int colIndex = 2;        average = arrayOne.colAverage(colIndex);        System.out.printf(&#34;The column average: %.2f.%n&#34;, average);        System.out.println(&#34;Expected: 4.00.&#34;);                average = arrayTwo.colAverage(colIndex);        System.out.printf(&#34;The column average: %.2f.%n&#34;, average);        System.out.println(&#34;Expected: 1.00.&#34;);                average = arrayThree.colAverage(colIndex);        System.out.printf(&#34;The column average: %.2f.%n&#34;, average);        System.out.println(&#34;Expected: -2.00.&#34;);        average = arrayOne.arrayAverage();        System.out.printf(&#34;The average of the 2-D array: %.2f.%n&#34;, average);        System.out.println(&#34;Expected: 5.00.&#34;);                average = arrayTwo.arrayAverage();        System.out.printf(&#34;The average of the 2-D array: %.2f.%n&#34;, average);        System.out.println(&#34;Expected: -1.31.&#34;);                average = arrayThree.arrayAverage();        System.out.printf(&#34;The average of the 2-D array: %.2f.%n&#34;, average);        System.out.println(&#34;Expected: -0.27.&#34;);    }}

Accepted Answer

java program:
import java.util.Random; 
class Random2DArray {     public final int LOW_LIMIT = -10;…