How to Print Pattern in Java

Java pattern program enhances the coding skill, logic, and looping concepts. It is mostly asked in Java interview to check the logic and thinking of the programmer. We can print a Java pattern program in different designs. To learn the pattern program, we must have a deep knowledge of the Java loop, such as for loop do-while loop. In this section, we will learn how to print a pattern in Java.

We have classified the Java pattern program into three categories:

Start Pattern
Number Pattern
Character Pattern

Before moving to the pattern programs, let’s see the approach.

Whenever you design logic for a pattern program, first draw that pattern in the blocks, as we have shown in the following image. The figure presents a clear look of the pattern.

Each pattern program has two or more than two loops. The number of the loop depends on the complexity of pattern or logic. The first for loop works for the row and the second loop works for the column. In the pattern programs, Java for loop is widely used.

How to Print Pattern in Java

In the above pattern, the row is denoted by i and the column is denoted by j. We see that the first row prints only a star. The second-row prints two stars, and so on. The colored blocks print the spaces.

Let’s create the logic for the pattern, give above. In the following code snippet, we are starting row and column value from 0. We can also start it from 1, it’s your choice.

In the above code snippet, the first for loop is for row and the second for loop for columns.

Let’s see the execution of the code step by step, for n=4 (the number of rows we want to print).

Iteration 1:

For i=0, 0<4 (true)  For j=0, j<=0 (true)

The first print statement prints a star at the first row and the second println statement prints the spaces and throws the cursor at the next line.

Now the value of i and j is increased to 1.

Iteration 2:

For i=1, 1<4 (true)  For j=1, 1<=1 (true)

The first print statement prints two stars at the second row and the second println statement prints the spaces and throws the cursor at the next line.

Now the value of i and j is increased to 2.

Iteration 3:

For i=2, 2<4 (true)  For j=2, 2<=2 (true)

The first print statement prints three stars at the third row and the second println statement prints the spaces and throws the cursor at the next line.

Now the value of i and j is increased to 3.

Iteration 4:

For i=3, 3<4 (true)  For j=3, 3<=3 (true)

The first print statement prints four stars at the fourth row and the second println statement prints the spaces and throws the cursor at the next line.

Now the value of i and j is increased to 4.

For i=4, 4<4 (false)

The execution of the program will terminate when the value of i will be equal to the number of rows.

Star Pattern

1. Right Triangle Star Pattern

  public class RightTrianglePattern   {   public static void main(String args[])   {   //i for rows and j for columns      //row denotes the number of rows you want to print  int i, j, row=6;   //outer loop for rows  for(i=0; i;>

Output:

How to Print Pattern in Java

2. Left Triangle Star Pattern

  public class LeftTrianglePattern  {    public static void main(String args[])   {    //i for rows and j for columns      //row denotes the number of rows you want to print  int i, j, row = 6;       //Outer loop work for rows  for (i=0; i=0; j–)         {  //prints space between two stars      System.out.print(” “);   }   //inner loop for columns  for (j=0; j<=i; j++ )   {   //prints star      System.out.print(“* “);   }   //throws the cursor in a new line after printing each line  System.out.println();   }   }   }  ;>

Output:

How to Print Pattern in Java

3. Pyramid Star Pattern

  public class PyramidPattern  {    public static void main(String args[])   {    //i for rows and j for columns      //row denotes the number of rows you want to print  int i, j, row = 6;       //Outer loop work for rows  for (i=0; i1; j–)   {  //prints space between two stars  System.out.print(” “);   }   //inner loop for columns  for (j=0; j<=i; j++ )   {   //prints star      System.out.print(“* “);   }   //throws the cursor in a new line after printing each line  System.out.println();   }   }   }  ;>

Output:

How to Print Pattern in Java

4. Diamond Shape Pattern

  import java.util.Scanner;  public class DiamondPattern  {  public static void main(String args[])  {  int row, i, j, space = 1;  System.out.print(“Enter the number of rows you want to print: “);  Scanner sc = new Scanner(System.in);  row = sc.nextInt();  space = row – 1;  for (j = 1; j<= row; j++)  {  for (i = 1; i<= space; i++)  {  System.out.print(” “);  }  space–;  for (i = 1; i <= 2 * j – 1; i++)  {  System.out.print(“*”);  }  System.out.println(“”);  }  space = 1;  for (j = 1; j<= row – 1; j++)  {  for (i = 1; i<= space; i++)  {  System.out.print(” “);  }  space++;  for (i = 1; i<= 2 * (row – j) – 1; i++)  {  System.out.print(“*”);  }  System.out.println(“”);  }  }  }  

Output:

How to Print Pattern in Java

5. Downward Triangle Star Pattern

  public class DownwardTrianglePattern  {  public static void main(String[] args)  {  int rows=7;      //inner loop  for (int i= rows-1; i>=0 ; i–)  {  //outer loop  for (int j=0; j<=i; j++)  {  //prints star and space  System.out.print(“*” + ” “);  }  //throws the cursor in the next line after printing each line  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

6. Mirrored Right Triangle Star Pattern

  public class MirroredRightTrianglePattern   {  public static void main(String[] args)  {  int n=7;  //inner loop  for (int i= 0; i<= n; i++)  {  //outer loop  for (int j=1; j<=n-i; j++)  {  System.out.print(” “);  }  for (int k=0;k<=i;k++)  {  System.out.print(“*”);  }   System.out.println(“”);  }  }  }  

Output:

How to Print Pattern in Java

7. Reverse Pyramid Star Pattern

  public class ReversePyramidPattern  {  public static void main(String[] args)  {  int rows=8;  for (int i= 0; i<= rows-1; i++)  {  for (int j=0; j<=i; j++)  {  System.out.print(” “);  }  for (int k=0; k<=rows-1-i; k++)  {  System.out.print(“*” + ” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

8. Right Down Mirror Star Pattern

  public class RightDownMirrorPattern  {  public static void main(String args[])  {  int row=7;  for (int i= row; i>= 1; i–)  {  for (int j=row; j>i;j–)  {  System.out.print(” “);  }  for (int k=1;k<=i;k++)  {  System.out.print(“*”);  }  System.out.println(“”);  }  }  }  

Output:

How to Print Pattern in Java

9. Right Pascal’s Triangle

  import java.util.Scanner;  public class RightPascalTrianglePattern  {  public static void main(String[] args)  {  int i, j, rows;  Scanner sc = new Scanner(System.in);  System.out.print(“Enter the number of rows you want to print: “);  rows = sc.nextInt();          for (i= 0; i<= rows-1; i++)  {  for (j=0; j<=i; j++)   {  System.out.print(“*”+ ” “);  }   System.out.println(“”);   }   for (i=rows-1; i>=0; i–)  {  for(j=0; j <= i-1;j++)  {  System.out.print(“*”+ ” “);  }  System.out.println(“”);  }  }  }  

Output:

How to Print Pattern in Java

10.Left Pascal’s Triangle

  import java.util.Scanner;  public class LeftPascalTrianglePattern  {  public static void main(String[] args)  {  int i, j, k, rows;  Scanner sc = new Scanner(System.in);  System.out.print(“Enter the number of rows you want to print: “);  rows = sc.nextInt();          for (i= 1; i<= rows ; i++)  {  for (j=i; j <rows ;j++)              {  System.out.print(” “);  }  for (k=1; k<=i;k++)   {  System.out.print(“*”);   }   System.out.println(“”);   }   for (i=rows; i>=1; i–)  {  for(j=i; j<=rows;j++)  {  System.out.print(” “);  }  for(k=1; k<i ;k++)   {  System.out.print(“*”);  }  System.out.println(“”);  }  sc.close();  }  }  

Output:

How to Print Pattern in Java

11. Sandglass Star Pattern

  import java.util.Scanner;  public class SandglassPattern  {  public static void main(String[] args)  {  int i, j, k, n;  Scanner sc = new Scanner(System.in);  System.out.print(“Enter the number of rows you want to print: “);  n = sc.nextInt();              for (i= 0; i<= n-1 ; i++)  {  for (j=0; j<i; j++)  {  System.out.print(” “);  }  for (k=i; k<=n-1; k++)   {   System.out.print(“*” + ” “);   }   System.out.println(“”);   }   for (i= n-1; i>= 0; i–)  {  for (j=0; j<i; j++)  {  System.out.print(” “);  }  for (k=i; k<=n-1; k++)  {  System.out.print(“*” + ” “);  }  System.out.println(“”);  }  sc.close();  }  }  

Output:

How to Print Pattern in Java

12. Alphabet Star Pattern

  import java.util.*;  public class AlphabetPattern  {  public static void main(String[] args)  {  int i, j, n=8;  // Outer for loop for number of lines  for (i = 0; i<=n; i++)   {  // Inner for loop for logic execution  for (j = 0; j<= n / 2; j++)   {  // prints two vertical lines  if ((j == 0 || j == n / 2) && i != 0 ||  // print first line of alphabet  i == 0  && j != n / 2 ||   // prints middle line  i == n / 2)   System.out.print(“*”);  else  System.out.print(” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

13. Triangle Star Pattern

  import java.util.Scanner;  public class TrianglePattern  {  public static void main(String[] args)  {  int i, j, k, rows=9;  for (i=1; i<= rows ; i++)  {  for (j = i; j < rows ; j++)   {  System.out.print(” “);  }     for (k = 1; k <= (2*i -1) ;k++)   {  if(k==1 || i == rows || k==(2*i-1))   {  System.out.print(“*”);  }  else   {  System.out.print(” “);  }  }  System.out.println(“”);  }  }  }  

Output:

How to Print Pattern in Java

14. Down Triangle Pattern

  import java.util.Scanner;  public class DownTrianglePattern  {  public static void main(String[] args)  {  int i, j, k, rows=9;     for (i=rows; i>= 1 ; i–)  {  for (j = i; j<rows ; j++)   {  System.out.print(” “);  }     for (k = 1; k <= (2*i -1) ;k++)   {  if( k==1 || i == rows || k==(2*i-1))   {  System.out.print(“*”);  }  else   {  System.out.print(” “);  }  }  System.out.println(“”);  }  }  }  

Output:

How to Print Pattern in Java

15. Diamond Star Pattern

  import java.util.*;  public class DiamondPattern  {  public static void main(String[] args)  {  Scanner sc = new Scanner(System.in);  System.out.println(“Enter the number of rows you want to print: “);  int rows = sc.nextInt();      for (i=1; i<= rows ; i++)   {  for (j = rows; j > i ; j–)   {  System.out.print(” “);  }  System.out.print(“*”);  for (k = 1; k < 2*(i -1) ;k++)   {   System.out.print(” “);   }  if( i==1)   {   System.out.println(“”);  }  else  {  System.out.println(“*”);   }  }   for (i=rows-1; i>= 1 ; i–)  {  for (int j = rows; j > i ; j–)   {  System.out.print(” “);  }  System.out.print(“*”);  for (int k = 1; k < 2*(i -1) ;k++)   {  System.out.print(” “);  }  if(i==1)  System.out.println(“”);  else  System.out.println(“*”);  }  }  }  

Output:

How to Print Pattern in Java

Number Pattern

1. Pattern-1

  public class Pattern1  {  public static void main(String args[])   {   int i, j,number, n=7;   //loop for rows  for(i=0; i;>

Output:

How to Print Pattern in Java

2. Pattern-2

  public class Pattern2  {              public static void main(String[] args)   {  int i, j, k = 1;  //inner loop  for (i = 1; i <= 7; i++)   {  //outer loop  for (j = 1; j< i + 1; j++)   {  //prints the value of k  System.out.print(k++ + ” “);  }  //throws the cursor at the next line  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

3. Pattern-3

  public class Pattern3  {              public static void main(String[] args)   {  int n = 8;    //n is the number of rows you want to print  for (int i = 0; i < n; i++)   {  int number = 1;  System.out.printf(“%” + (n – i) * 2 + “s”, “”);  for (int j = 0; j <= i; j++)   {  System.out.printf(“%4d”, number);  number = number * (i – j) / (j + 1);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

4. Pattern-4

  public class Pattern4  {              public static void main(String[] args)   {  for (int i = 1; i <= 4; i++)  {  int n = 8;  for (int j = 1; j<= n – i; j++)   {   System.out.print(” “);   }   for (int k = i; k >= 1; k–)  {  System.out.print(k);  }  for (int l = 2; l <= i; l++)   {  System.out.print(l);   }   System.out.println();   }   for (int i = 3; i >= 1; i–)  {  int n = 10;  for (int j = 0; j<= n – i; j++)   {  System.out.print(” “);   }   for (int k = i; k >= 1; k–)  {  System.out.print(k);  }  for (int l = 2; l <= i; l++)  {  System.out.print(l);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

5. Pattern-5

  import java.util.*;  public class Pattern5  {              public static void main(String[] args)   {  int i, j, rows;  Scanner sc = new Scanner(System.in);    System.out.print(“Enter the number of rows you want to print: “);       rows = sc.nextInt();           for (i = 1; i <= rows; i++)   {  for (j = 1; j <= i; j++)  {  System.out.print(i+” “);  }  System.out.println();  }           }  }  

Output:

How to Print Pattern in Java

6. Pattern-6

  import java.util.*;  public class Pattern6  {  public static void main(String[] args)  {  int i, j, rows;  Scanner sc = new Scanner(System.in);  System.out.print(“Enter the number of rows youy want to print: “);  rows = sc.nextInt();  for (i = rows; i >= 1; i–)  {  for (j = rows; j >= i; j–)  {  System.out.print(j+” “);  }     System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

7. Pattern-7

  import java.util.Scanner;  public class Pattern7  {  public static void main(String[] args)   {  int i, j, n;  Scanner sc = new Scanner(System.in);  System.out.print(“Enter the number of rows you want to print: “);  n = sc.nextInt();  for (i = 1; i <= n; i++)   {   for (j = i; j >= 1; j–)  {  System.out.print(j+” “);  }  System.out.println();  }           }  }  

Output:

How to Print Pattern in Java

8. Pattern-8

  public class Pattern8  {  public static void main(String[] args)   {  int rows=9;   //number of rows to print  for (int i = 1; i <= rows; i++)   {  int num;  if(i%2 == 0)  {  num = 0;  for (int j = 1; j <= rows; j++)  {  System.out.print(num);  num = (num == 0)? 1 : 0;  }  }  else  {  num = 1;  for (int j = 1; j <= rows; j++)  {  System.out.print(num);  num = (num == 0)? 1 : 0;  }  }  System.out.println();  }  }  }   

Output:

How to Print Pattern in Java

9. Pattern-9

  import java.util.Scanner;  public class Pattern9  {              public static void main(String[] args)   {  int i, j, rows=9;         for (i = 1; i <= rows; i++)   {  for (j = 1; j <= i; j++)  {  if(j%2 == 0)  {  System.out.print(0);  }  else  {  System.out.print(1);  }  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

10. Pattern-10

  public class Pattern10  {  public static void main(String[] args)   {  int n = 10;    for (int i = 1; i <= n; i++)   {  for (int j = 1; j < i; j++)   {  System.out.print(” “);  }  for (int k = i; k <= n; k++)   {   System.out.print(k+” “);  }  System.out.println();  }  for (int i = n-1; i >= 1; i–)   {  for (int j = 1; j < i; j++)   {  System.out.print(” “);  }  for (int k = i; k <= n; k++)  {  System.out.print(k+” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

11. Pattern-11

  public class Pattern11  {  public static void main(String[] args)   {  int rows=8;   //Prints upper half pattern  for (int i = 1; i <= rows; i++)   {  for (int j = 1; j <= i; j++)   {   System.out.print(j+” “);   }   System.out.println();   }   //prints lower half pattern  for (int i = rows-1; i >= 1; i–)  {  for (int j = 1; j <= i; j++)  {  System.out.print(j+” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

12. Pattern-12

  public class Pattern12  {  public static void main(String[] args)   {  int rows=9;  for (int i = 1; i <= rows; i++)   {   for (int j = rows; j >= i; j–)  {  System.out.print(j+” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

13. Pattern-13

  public class Pattern14  {  public static void main(String[] args)   {  int i, j, rows=9;  for (i = rows; i >= 1; i–)   {  for (j = 1; j <= i; j++)  {  System.out.print(j+” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

14. Pattern-14

  public class Pattern14  {  public static void main(String[] args)   {  int rows=7, i, j;  for (i = rows; i >= 1; i–)   {  for (j = i; j >= 1; j–)  {  System.out.print(j+” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

15. Pattern-15

  public class Pattern15  {  public static void main(String[] args)   {  int i, j, rows=9;  for (i = 1; i <= rows; i++)   {  //Prints first half of the row  for (j = 1; j <= i; j++)   {   System.out.print(j+” “);   }  //Prints second half of the row   for (j = i-1; j >= 1; j–)  {  System.out.print(j+” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

16. Pattern-16

  public class Pattern16  {  public static void main(String[] args)   {  int i, j, rows=9;  //Prints upper half  pattern  for (i = rows; i >= 1; i–)   {  for (j = 1; j <= i; j++)  {  System.out.print(j+” “);  }  System.out.println();  }  //Prints lower half  pattern  for (i = 2; i <= rows; i++)   {  for (j = 1; j <= i; j++)  {  System.out.print(j+” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

17. Pattern-17

  public class Pattern17  {  public static void main(String[] args)   {  int rows=9;  //Prints upper half pattern  for (int i = 1; i <= rows; i++)   {  //Prints i spaces at the beginning of each row  for (int j = 1; j < i; j++)   {  System.out.print(” “);  }  //Prints i to rows value at the end of each row  for (int j = i; j <= rows; j++)   {   System.out.print(j);   }   System.out.println();   }   //Prints lower half  pattern   for (int i = rows-1; i >= 1; i–)   {  //Prints i spaces at the beginning of each row  for (int j = 1; j < i; j++)   {  System.out.print(” “);  }  //Prints i to rows value at the end of each row  for (int j = i; j <= rows; j++)  {  System.out.print(j);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

18. Pattern-18

  public class Pattern18  {  public static void main(String[] args)   {  int rows=8;  for (int i = 1; i <= rows; i++)   {  for (int j = 1; j <= rows-i; j++)  {  System.out.print(1);  }  for (int j = 1; j <= i; j++)  {  System.out.print(i);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

19. Pattern-19

  public class Pattern19  {  public static void main(String args[])  {  int rows=9;  for (int i = 1; i <= rows; i++)   {  int num = i;  for (int j = 1; j <= i; j++)   {  System.out.print(num+” “);  num = num+rows-j;  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

20. Pattern-20

  public class Pattern20  {  public static void main(String[] args)   {  int i, j, k, rows=9;  for(i=1;i< rows+1 ;i++)  {  for(j=i; j < rows+1 ;j++)  {  System.out.print(j + ” “);  }  for(k=1; k < i ;k++)  {  System.out.print(k + ” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

21. Pattern-21

  import java.util.Scanner;  public class Pattern21   {   public static void main(String[] args)    {   int i, j, min, n; //n is the number up to you want to print  System.out.print(“Enter the value of n: “);  Scanner sc= new Scanner(System.in);  n=sc.nextInt();  //loo for upper left part  for (i = 1; i <= n; i++)    {   for (j = 1; j <= n; j++)   {   min = i < j ? i : j;   System.out.print(n – min + 1+ ” “);   }  //loop for upper right part  for (j = n – 1; j >= 1; j–)   {   min = i < j ? i : j;   System.out.print(n – min + 1+ ” “);   }   System.out.println();   }   //loop for lower left part  for (i = n – 1; i >= 1; i–)    {   for (j = 1; j <= n; j++)    {   min = i < j ? i : j;   System.out.print(n – min + 1+ ” “);   }   //loop for lower right part  for (j = n – 1; j >= 1; j–)    {   min = i < j ? i : j;   System.out.print(n – min + 1+ ” “);   }   System.out.println();   }   }   }   

Output:

How to Print Pattern in Java

Character Pattern

1. Right Triangle Alphabetic Pattern

  public class RightAlphabaticPattern  {              public static void main(String[] args)  {  int alphabet = 65; //ASCII value of capital A is 65  //inner loop for rows  for (int i = 0; i <= 8; i++)  {  //outer loop for columns      for (int j = 0; j <= i; j++)  {  //adds the value of j in the ASCII value of A and prints the corresponding alphabet  System.out.print((char) (alphabet + j) + ” “);   }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

2. Repeating Alphabet Pattern

  public class RepeatingPattern  {              public static void main(String[] args)  {  int letter = 65; //ASCII value of capital A is 65  //inner loop for rwos  for (int i = 0; i<= 9; i++)  {  //outer loop for columns  for (int j = 0; j <= i; j++)  {  //prints the character  System.out.print((char) letter + ” “);  }  letter++;  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

3. K-shape Alphabet Pattern

  public class KshapePattern  {  public static void main(String[] args)  {  for (int i = 8; i >= 0; i–)  {  int alphabet = 65;  for (int j = 0; j <= i; j++)  {  System.out.print((char) (alphabet + j) + ” “);  }  System.out.println();  }  for (int i = 0; i<= 8; i++)  {  int alphabet = 65;  for (int j = 0; j <= i; j++)  {  System.out.print((char) (alphabet + j) + ” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

4. Triangle Character Pattern

  public class TriangleCharacterPattern  {              public static void main(String[] args)  {  for (int i = 0; i <= 8; i++)   {  int alphabet = 65;   for (int j = 8; j > i; j–)  {  System.out.print(” “);  }  for (int k = 0; k <= i; k++)  {  System.out.print((char) (alphabet + k) + ” “);  }  System.out.println();  }  }  }  

Output:

How to Print Pattern in Java

5. Diamond Character Pattern

  import java.util.Scanner;  public class DiamondCharacterPattern  {  public static void main(String[] args)   {  char[] alphabet = { ‘A’, ‘B’, ‘C’, ‘D’, ‘E’, ‘F’, ‘G’, ‘H’, ‘I’, ‘J’, ‘K’, ‘L’, ‘M’, ‘N’, ‘O’, ‘P’, ‘Q’, ‘R’, ‘S’, ‘T’, ‘U’, ‘V’, ‘W’, ‘X’, ‘Y’, ‘Z’ };  int alphabet _number = 0;  String[] diamond = new String[26]; // array of strings  System.out.print(“Enter a Character between A to Z : “);  Scanner reader = new Scanner(System.in);  try   {  char user_ alphabet = reader.next(“[A-Z]”).charAt(0);  // search for letter number in the array letter  for (int i = 0; i < alphabet.length; i++)   {  if (letter[i] == user_ alphabet)   {  alphabet _number = i;  break;  }  }  //construct diamond  for (int i = 0; i <= alphabet _number; i++)   {  diamond[i] = “”;  //add initial spaces  for (int j = 0; j < alphabet _number – i; j++)   {  diamond[i] += ” “;  }  // add alphabet  diamond[i] += alphabet  //add space between letters  if (alphabet[i] != ‘A’)   {  for (int j = 0; j < 2 * i – 1; j++)   {   diamond[i] += ” “;   }   // add alphabet  diamond[i] += alphabet[i];   }   // Draw the first part of the diamond   System.out.println(diamond[i]);   }   for (int i = alphabet _number – 1; i >= 0; i–)  {  // Draw the second part of the diamond  // prints the diamondArray in the reverse order  System.out.println(diamond[i]);  }  }  catch (Exception e)   {  e.printStackTrace();  }  finally   {  reader.close();  }  }  }  

Output:

How to Print Pattern in Java

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How to Print Pattern in Java

How to Print Pattern in Java

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