Java program to print alphabetical pattern
By Saima ShamimIn this tutorial, you’ll learn to generate a wide range of patterns using alphabets in Java.
Alphabetical patterns are patterns created by arranging alphabets in a specific shape or sequence by using some simple nested loops. Alphabetical patterns in Java are a creative way to enhance your programming skills and explore the creative side of coding.
You can also check these:
How to Print a Staircase Pattern in Java
Various Star Pattern Programming in Java
I recommend you run the following codes on your machine instead of using online compilers.
Pattern 1: Square alphabet pattern
A A A A A B B B B B C C C C C D D D D D E E E E E
class Pattern {
static void pattern(int size)
{
char alpha ='A';
for(int row=1;row<=size;row++)
{
for(int col=1;col<=size;col++)
{
System.out.print(alpha+" ");
}
alpha++;
System.out.println();
}
}
public static void main(String[] args) {
pattern(5);
}
}First, we declare an int variable called size which is set to 5.
Next, we declare a char variable called alpha with value ‘A’.
After that, we run the outer for-loop as many times as the number of rows in the pattern which is equal to size.
Then we will run the inner for-loop which will iterate each row of the pattern and in the first iteration it prints the value stored in alpha which is the character “A” 5 times.
Finally, it increases the value of alpha by one and adds a new line.
Pattern 2: Hollow square alphabet pattern
A B C D E A E A E A E A B C D E
class Pattern {
static void pattern(int size)
{
for(int row=1;row<=size;row++)
{
char alpha ='A';
for(int col=1;col<=size;col++)
{
if(row==1||row==size||col==1||col==size)
{
System.out.print(alpha+" ");
alpha++;
}
else
{
System.out.print(" ");
alpha++;
}
}
System.out.println();
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 3: Left triangle alphabet pattern
A B B C C C D D D D E E E E E
class Pattern {
static void pattern(int size)
{
char alpha ='A';
for(int row=1;row<=size;row++)
{
for(int col=1;col<=row;col++)
{
System.out.print(alpha+" ");
}
System.out.println();
alpha++;
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 4: Right triangle alphabet pattern
A
A B
A B C
A B C D
A B C D Eclass Pattern {
static void pattern(int size) {
for (int row = 1; row <= size; row++) {
char alpha = 'A';
for (int space = 1; space <= size - row; space++) {
System.out.print(" ");
}
for (int col = 1; col <= row; col++) {
System.out.print(alpha + " ");
alpha++;
}
System.out.println();
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 5: Hollow alphabet left triangle pattern
A B B C C D D E E E E E
class Pattern {
static void pattern(int size)
{
char alpha ='A';
for(int row=1;row<=size;row++)
{
for(int col=1;col<=row;col++)
{
if(row==1||row==size||col==1||col==row)
{
System.out.print(alpha+" ");
}
else
{
System.out.print(" ");
}
}
alpha++;
System.out.println();
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 6: Hollow alphabet right triangle pattern
A
A B
A C
A D
A B C D Eclass Pattern {
static void pattern(int size) {
for (int row = 1; row <= size; row++) {
char alpha = 'A';
for (int space = 1; space <= size - row; space++) {
System.out.print(" ");
}
for (int col = 1; col <= row; col++) {
if(row==1||row==size||col==1||col==row)
{
System.out.print(alpha + " ");
alpha++;
}
else
{
System.out.print(" ");
alpha++;
}
}
System.out.println();
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 7: Left down alphabet triangle
E E E E E D D D D C C C B B A
class Pattern {
static void pattern(int size)
{
char alpha ='E';
for(int row=1;row<=size;row++)
{
for(int col=5;col>=row;col--)
{
System.out.print(alpha+" ");
}
alpha--;
System.out.println();
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 8: Right down alphabet triangle
A B C D E
A B C D
A B C
A B
Aclass Pattern {
static void pattern(int size) {
for (int row = 1; row <= size; row++) {
char alpha = 'A';
for (int space = 1; space <= row-1; space++) {
System.out.print(" ");
}
for (int col = 5; col >=row; col--) {
System.out.print(alpha + " ");
alpha++;
}
System.out.println();
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 9: Pyramid alphabet pattern
A
A B C
A B C D E
A B C D E F G
A B C D E F G H Iclass Pattern {
static void pattern(int size) {
for(int row=1;row<=size;row++)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
System.out.print(alpha+" ");
alpha++;
}
System.out.println("");
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 10: Hollow pyramid alphabet pattern
A
A C
A E
A G
A B C D E F G H Iclass Pattern {
static void pattern(int size) {
for(int row=1;row<=size;row++)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
if(row==1||row==size||col==1||col==2*row-1)
{
System.out.print(alpha+" ");
alpha++;
}
else
{
System.out.print(" ");
alpha++;
}
}
System.out.println("");
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 11: Reverse pyramid alphabet pattern
A B C D E F G H I
A B C D E F G
A B C D E
A B C
Aclass Pattern {
static void pattern(int size) {
for(int row=size;row>=1;row--)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
System.out.print(alpha+" ");
alpha++;
}
System.out.println("");
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 12: Reverse hollow pyramid alphabet pattern
A B C D E F G H I
A G
A E
A C
Aclass Pattern {
static void pattern(int size) {
for(int row=size;row>=1;row--)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
if(row==1||row==size||col==1||col==2*row-1)
{
System.out.print(alpha+" ");
alpha++;
}
else
{
System.out.print(" ");
alpha++;
}
}
System.out.println("");
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 13: Diamond alphabet pattern
A
A B C
A B C D E
A B C D E F G
A B C D E F G H I
A B C D E F G
A B C D E
A B C
Aclass Pattern {
static void pattern(int size) {
//upper pyramid
for(int row=1;row<=size;row++)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
System.out.print(alpha+" ");
alpha++;
}
System.out.println("");
}
//lower pyramid
for(int row=size-1;row>=1;row--)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
System.out.print(alpha+" ");
alpha++;
}
System.out.println("");
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 14: Hollow diamond alphabet pattern
A
A C
A E
A G
A I
A G
A E
A C
Aclass Pattern {
static void pattern(int size) {
//upper pyramid
for(int row=1;row<=size;row++)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
if(col==1||col==2*row-1)
{
System.out.print(alpha+" ");
alpha++;
}
else
{
System.out.print(" ");
alpha++;
}
}
System.out.println("");
}
//lower pyramid
for(int row=size-1;row>=1;row--)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
if(col==1||col==2*row-1)
{
System.out.print(alpha+" ");
alpha++;
}
else
{
System.out.print(" ");
alpha++;
}
}
System.out.println("");
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 15: Hourglass alphabet pattern
A B C D E F G H I
A B C D E F G
A B C D E
A B C
A
A B C
A B C D E
A B C D E F G
A C B D E F G H Iclass Pattern {
static void pattern(int size) {
//upper pyramid
for(int row=size;row>=1;row--)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
System.out.print(alpha+" ");
alpha++;
}
System.out.println("");
}
//lower pyramid
for(int row=2;row<=size;row++)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
System.out.print(alpha+" ");
alpha++;
}
System.out.println("");
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 16: Right Pascal triangle pattern
A A B A B C A B C D A B C D E A B C D A B C A B A
class Pattern {
static void pattern(int size) {
//upper pyramid
for(int row=1;row<=size;row++)
{
char alpha='A';
for(int col=1;col<=row;col++)
{
System.out.print(alpha+" ");
alpha++;
}
System.out.println();
}
for(int row =1;row<=size-1;row++)
{
char alpha='A';
for(int col=1;col<=size-row;col++)
{
System.out.print(alpha+" ");
alpha++;
}
System.out.println();
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 17: Left Pascal triangle pattern
A
A B
A B C
A B C D
A B C D E
A B C D
A B C
A B
Aclass Pattern {
static void pattern(int size) {
//upper pyramid
for(int row=1;row<=size;row++)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=row;col++)
{
System.out.print(alpha+" ");
alpha++;
}
System.out.println();
}
for(int row =1;row<=size-1;row++)
{
char alpha='A';
for(int space=1;space<=row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=size-row;col++)
{
System.out.print(alpha+" ");
alpha++;
}
System.out.println();
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 18: Heart alphabet pattern
ABC ABC
ABCDE ABCDE
ABCDEFGHIJKLM
ABCDEFGHIJK
ABCDEFGHI
ABCDEFG
ABCDE
ABC
Apublic class Pattern {
public static void main(String[] args) {
// heart alphabet pattern
int size = 7;
int alpha = 'A';
for (int row = size / 2; row < size; row += 2) {
// print first spaces
for (int space = 1; space < size - row; space += 2) {
System.out.print(" ");
}
// print first alphabets
for (int col1 = 1; col1 < row + 1; col1++) {
System.out.print((char)(alpha+col1-1));
}
// print second spaces
for (int space1 = 1; space1 < size - row; space1++) {
System.out.print(" ");
}
// print second alphabets
for (int col2 = 1; col2 < row + 1; col2++) {
System.out.print((char)(alpha+col2-1));
}
System.out.println();
}
// lower part
// inverted pyramid
for (int row = size; row > 0; row--) {
for (int space = 0; space < size - row; space++) {
System.out.print(" ");
}
for (int col = 1; col < row * 2; col++) {
System.out.print((char)(alpha+col-1));
}
System.out.println();
}
}
}Pattern 19: Plus alphabet pattern
A
B
C
D
A B C D E F G H I
D
C
B
Aclass Pattern {
static void pattern(int size) {
//upper pyramid
for(int row=1;row<=size;row++)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
if(row==size||col==row)
{
System.out.print(alpha+" ");
alpha++;
}
else
{
System.out.print(" ");
alpha++;
}
}
System.out.println("");
}
//lower pyramid
for(int row=size-1;row>=1;row--)
{
char alpha='A';
for(int space=1;space<=size-row;space++)
{
System.out.print(" ");
}
for(int col=1;col<=2*row-1;col++)
{
if(col==row)
{
System.out.print(alpha+" ");
alpha++;
}
else
{
System.out.print(" ");
alpha++;
}
}
System.out.println("");
}
}
public static void main(String[] args) {
pattern(5);
}
}Pattern 20: Cross alphabet pattern
A E
B D
C
B D
A Eclass Pattern {
static void pattern(int size) {
//upper pyramid
for(int row=1;row<=size;row++)
{
char alpha='A';
for(int col=1;col<=size;col++)
{
if(row==col||row+col==size+1)
{
System.out.print(alpha+" ");
alpha++;
}
else
{
System.out.print(" ");
alpha++;
}
}
System.out.println("");
}
}
public static void main(String[] args) {
pattern(5);
}
}Thank you for learning from CodeSpeedy. If you have any doubts or questions then please ask them in the comments section below.
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