Write an application that displays the following patterns se

Write an application that displays the following patterns separately, one below the other. Use for loops to generate the patterns. All asterisks (*) should be printed by a single statement of the form System.out.println(); which causes the asterisks to print side by side. A statement of the form System. out.println(); can be used to move to the next line. A statement of the form System. out. Print(\'\'); can be used to display a space for the two patterns. There should be no other output statements in the program. Save the file as TrianglePrinting.java. Again, Don\'t forget to create the application/project TrianglePrintingTest.java Class that has the main method and an object to use the TrianglePrinting class.

Solution

/****************TrianglePrinting.java****************/

public class TrianglePrinting {
   /*
   * Printing triangle print pattern1 according question
   */
   public static void pattern1(int number) {
       /* For loop start outer */
       for (int i = 0; i < number; i++) {
           /* Printing space */
           /* for loop inner start for space */
           for (int space = 0; space < i; space++) {
               System.out.print(\" \");
           }
           /* for loop inner End for space */
           /* Printing star */
           /* for loop start for star */
           for (int star = i; star < number; star++) {
               System.out.print(\"*\");
           }
           /* for loop End for star */
           System.out.println();// for new line
       }

   }

   /*
   * Printing triangle print pattern2 according question
   */
   public static void pattern2(int number) {
       /* For loop start outer */
       for (int i = number - 1; i >= 0; i--) {
           /* Printing space */
           /* for loop inner start for space */
           for (int space = 0; space < i; space++) {
               System.out.print(\" \");
           }
           /* for loop inner End for space */
           /* Printing star */
           /* for loop start for star */
           for (int star = i; star < number; star++) {
               System.out.print(\"*\");
           }
           /* for loop End for star */
           System.out.println();// for new line
       }

   }
}

/************************TrianglePrintingTest*******************/

public class TrianglePrintingTest {
   /* Main method start */
   public static void main(String[] args) {

       /* Calling first pattern */
       System.out.println(\"\ Pattern 1:\ \");
       TrianglePrinting.pattern1(9);
       System.out.println(\"\ Pattern 2:\ \");
       /* calling second pattern */
       TrianglePrinting.pattern2(9);
   }/* Main method end */

}

/************output start****************/

Pattern 1:

*********
********
*******
   ******
    *****
     ****
      ***
       **
        *

Pattern 2:

        *
       **
      ***
     ****
    *****
   ******
*******
********
*********

/***************output End*****************/

If you have any query please feel free to ask.

Thanks a lot