I've already done excercise 1, need help with excercise 2

Exercise 1: 1. Write the following Java methods and test it from the main() method. Write a method to initialize a two-dimensional array of integers to a certain value. The integer array and the initialization value are received as parameters. Write a method to display the elements of a two-dimensional array of integers. The integer array is received as a parameter. Write a method to find the sum of each row in a 2-dimensional integer array. The return value is an array of integers Write a method to find the sum of each column in a 2-dimensional array. The return value is an array of integers Write a Java method to determine and display the sum of all the values in the primary and secondary diagonals of a 2D integer array. The 2D integer array is received as a parameter to the method. An example is shown below. 33 4 12 Primary Diagonal: 2+44+8+21-75 56 8 86 Secondary Diagonal: 1+3+7+5 16 Exercise 2: Implement the Tic-Tac-Toe or the Connect-4 game. Any code taken from the Internet will not receive any credit