1) Write a Java program that fills a 3x4 matrix with random numbers in (0, 9] and calculates the sum of the elements in each row. For example: 0 32 71sum 12 6031| 5148] - - sum10 sum18 Use a two-dimensional array to store the matrix elements. 2) Write a Java program that adds two 4x4 matrices and prints the resulting matrix. For example: [0 1 27 [1 10 2 [1 2 2 9 3120 3 267 6 3 8 7 5 1 44 4 03 2 9 1 7 6 Use two-dimensional arrays to store the elements of the matrices. Your program should initialize the matrices in the declaration line