Write a Java program to print downward triangle star pattern using for loop.
package ShapePrograms2; import java.util.Scanner; public class DownwardTriangle1 { private static Scanner sc; public static void main(String[] args) { sc = new Scanner(System.in); System.out.print("Enter Downward Triangle Star Pattern Rows = "); int rows = sc.nextInt(); System.out.println("Printing Downward Triangle Star Pattern"); for (int i = rows -1 ; i >= 0; i-- ) { for (int j = 0 ; j <= i; j++ ) { System.out.print("* "); } System.out.println(); } } }

This Java example displays the downward triangle pattern of stars using a while loop.
package ShapePrograms2; import java.util.Scanner; public class DownwardTriangle2 { private static Scanner sc; public static void main(String[] args) { sc = new Scanner(System.in); System.out.print("Enter Downward Triangle Star Pattern Rows = "); int rows = sc.nextInt(); System.out.println("Printing Downward Triangle Star Pattern"); int j, i = rows - 1 ; while ( i >= 0) { j = 0 ; while ( j <= i ) { System.out.print("* "); j++; } System.out.println(); i--; } } }
Enter Downward Triangle Star Pattern Rows = 8
Printing Downward Triangle Star Pattern
* * * * * * * *
* * * * * * *
* * * * * *
* * * * *
* * * *
* * *
* *
*
Java program to print downward triangle star pattern using do while loop.
package ShapePrograms2; import java.util.Scanner; public class DownwardTriangle3 { private static Scanner sc; public static void main(String[] args) { sc = new Scanner(System.in); System.out.print("Enter Downward Triangle Star Pattern Rows = "); int rows = sc.nextInt(); System.out.println("Printing Downward Triangle Star Pattern"); int j, i = rows - 1 ; do { j = 0 ; do { System.out.print("* "); } while ( ++j <= i ); System.out.println(); } while ( --i >= 0); } }
Enter Downward Triangle Star Pattern Rows = 14
Printing Downward Triangle Star Pattern
* * * * * * * * * * * * * *
* * * * * * * * * * * * *
* * * * * * * * * * * *
* * * * * * * * * * *
* * * * * * * * * *
* * * * * * * * *
* * * * * * * *
* * * * * * *
* * * * * *
* * * * *
* * * *
* * *
* *
*
In this Java example, the DownwardTrianglePattern function prints the downward triangle pattern of a given symbol.
package ShapePrograms2; import java.util.Scanner; public class DownwardTriangle4 { private static Scanner sc; public static void main(String[] args) { sc = new Scanner(System.in); System.out.print("Enter Downward Triangle Star Pattern Rows = "); int rows = sc.nextInt(); System.out.print("Enter Character for Downward Triangle Pattern = "); char ch = sc.next().charAt(0); System.out.println("Printing Downward Triangle Pattern"); DownwardTrianglePattern(rows, ch); } public static void DownwardTrianglePattern(int rows, char ch) { for (int i = rows -1 ; i >= 0; i-- ) { for (int j = 0 ; j <= i; j++ ) { System.out.print(ch + " "); } System.out.println(); } } }
Enter Downward Triangle Star Pattern Rows = 14
Enter Character for Downward Triangle Pattern = #
Printing Downward Triangle Pattern
# # # # # # # # # # # # # #
# # # # # # # # # # # # #
# # # # # # # # # # # #
# # # # # # # # # # #
# # # # # # # # # #
# # # # # # # # #
# # # # # # # #
# # # # # # #
# # # # # #
# # # # #
# # # #
# # #
# #
#