Write a Java Program to print Star Pattern

Example : 1

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           for(int i =1;i<=num;i++){

                for(int j =1;j<=i;j++){

                      System.out.print("*");

                }

                System.out.println();

           }

     }

}

Output : 

Enter the number of rows : 5

*

**

***

****

*****

Example : 2

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           for(int i =num;i>=1;i--){

                for(int j =1;j<=i;j++){

                      System.out.print("*");

                }

                System.out.println();

           }

     }

}

Output : 

Enter the number of rows : 7

*******

******

*****

****

***

**

*

Example : 3

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           for(int i = num;i>=1;i--){

                for(int j =num;j>i;j--){

                      System.out.print(" ");

                }

                for(int k=1;k<=i;k++)

                {

                System.out.print("*");

                }

                System.out.println();

           }

     }

}

Output :

Enter the number of rows : 7

*******

 ******

  *****

   ****

    ***

     **

      *

Example : 4

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           for(int i = num;i>=1;i--){

                for(int j =1;j<i;j++){

                      System.out.print(" ");

                }

                for(int k=num;k>=i;k--)

                {

                System.out.print("*");

                }

                System.out.println();

           }

     }

}

Output : 

Enter the number of rows : 8

       *

      **

     ***

    ****

   *****

  ******

 *******

Example : 5

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           {

                for(int i=1; i<=num; i++)

                {

                for(int j=num-1; j>=i; j--)

                {

                System.out.print(" ");

                }

                for(int k=1; k<=(2*i-1); k++)

                {

                System.out.print("*");

                }

                System.out.println("");

                }

           }

     }

}

Output : 

Enter the number of rows : 5

    *

   ***

  *****

 *******

*********

Example:6

package com.tutorial4u;

import java.util.Scanner;

public class Triangle {

     public static void main(String[] args) {

           int num;

           System.out.print("Enter the number of rows : ");

           Scanner sc = new Scanner(System.in);

           num = sc .nextInt();

           {

            for(int i=num;i>=1;i--)

            {

                 for(int j = num ; j>i;j--)

                 {

                       System.out.print(" ");

                 }

                for(int k=1;k<(i*2);k++)

                {

                System.out.print("*");

                }

                System.out.println();

                }

           }

     }

}

Output : 

Enter the number of rows : 7

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

 ***********

  *********

   *******

    *****

     ***

      *