Problem Statement: Write a program to a make rectangle by taking the length and breadth as inputs (in the form of rows and columns) and give output in the following manner: and ( In simple words, we have printed stars (*) on the boundary positions of the matrix and on the centre positions of the matrix we have printed blank space( ) ) THE CODE: Sample Outputs:   and  In the above program, two int variables r and c to define the number of rows and columns respectively. On line 7 and line 9, following two statements are used to accept the input from the user: int r = sc . nextInt (); int c = sc . nextInt ();   For taking the input Scanner class has been used, more about Scanner class Algorithm: Two for loops are defined: ·         First for loop with counter variable i has initial value 1, conditional statement i less than or equal to r and an updating statement i++ . ·         Inside the first loop there is a second for loop, with counter variable j has

Problem Statement: Write a program to draw the following pattern where number of rows are decided by the user and given to the program as input:         *       * *     * * *   * * * * * * * * * * * * * * * (Take a variable n which takes the number of rows as input from the user, For above example, n=6) OUTPUT: The above program is the extension of the previous program (Pattern #3). This program asks the user to input the number of rows that it wants in the program. For accepting the input, the program has Scanner class which has been extracted from the package java.util . In this program, we will learn how to receive data from the user. If you remember in three previous patterns, the program itself had the input of number of rows where n=8, but now the user will tell the program how many rows are to be added.   Simplification 1.     In Line 1, the java.util  package has been imported, to use the Scanner class. import java.util.Scanner ; 2.     Further, in line 4 an objec