how do you do this the program is java

1. Create an array named arrl with 20 random numbers between 1 and 10(inclusively). Then produce a new array Art2 based on arrl as follows: arr2 has the same length as arr). In arr2, each element is the sum of the corresponding element in arr) and the previous element of arrl, except the first number in arr2 equals the first number in arri. For example, If arrl has the elements: 2 5 1 937 6... Then arr2 will be: 2 7 6 10 12 10 13... I Please display the two arrays. 2. Create a two dimensional array with 15 random numbers which are not ordered. The array has 3 rows and 5 columns. Each number is between 20 and 50. Then ask the user to input an integer x, then the numbers less than x are changed with 100. For example, if the array is: 34 23 45 37 44 27 29 40 31 30 33 47 38 26 29 Then the user types 30, then the array becomes 34 100 45 37 44 100 100 40 31 30 33 47 38 100 100 Please display both arrays