Write a Java class that populates an array of 20 random ints between 0 and 100. Write two methods: 1) a method returning the largest value, and 2) a method returning the array sorted in descending order.

1. Write a program that calls a method that takes a character array as a parameter (you can initialize an array in the main method) and returns the number of vowels in the array. Partial program is given below. public class CountVowels{ public static void main(String[] args){ char[] arr= System.out.print("There are "+vowels(arr)+" vowels in the array");

Write a Java method (do not write a class, only the method) with the following signature: Return type: void Parameters: 2D integer array Name: printDiagonal Implement the method code that will print out the values of the 2D array along the Diagonal from left to right. For example, if the array had the following values: 56    78    98 21    33    55 98    44    11        The method should print to the console:   56,33,11 The above 2D array example is only given for you to understand the problem Do not hard code the values in your solution or assume the array is the same as the given data. Your method should work for all 2D integer arrays.

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In JAVA Write the method below: Given a two-dimensional array containing integers, create a method called "matrixOperations"  The method should do the following:1. Print out all the numbers in the array row by row (add empty line at the end of the row)2. For each row, print out the length of the row (each row is an array, remember)

2. Write a method that takes a rectangular two-dimensional array of type int and returns a valu of type int. The method returns the number of rows with negative sum. A row has a negative s if the sum of all its elements is less than 0. public static int countNegativeSum(int[][] in) Taken array Result 1 -3 17 -5 -5 14 -5 -2 30 -19 -8 -8 1 1 3 -1 -4 78 8 -3 -5 -1 -1 3 -4