Introduction
In this article, I have explained the list of all Star (*) pattern programs in java programming language. In this demo I have used NetBeans IDE 8.2 for debugging purpose. But you can use any java programming language compiler as per your availability.
Star pattern : 1
*
**
***
****
*****
Star pattern : 2
class StarTriangle {
public static void main(String[] args) {
int i, j, k;
for (i = 5; i >= 1; i--) {
for (j = 1; j < i; j++) {
System.out.print(" ");
}
for (k = 5; k >= i; k--) {
System.out.print("*");
}
System.out.println();
}
}
}
Star pattern : 3
*****
****
***
**
*
class StarTriangle {
public static void main(String[] args) {
int i, j;
for (i = 5; i >= 1; i--) {
for (j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println("");
}
}
}
Star pattern : 4
class StarTriangle
{
public static void main(String[] args)
{
int i, j, k;
for(i=5;i>=1;i--)
{
for(j=5;j>i;j--)
{
System.out.print(" ");
}
for(k=1;k<=i;k++)
{
System.out.print("*");
}
System.out.println("");
}
}
}
Star pattern : 5
*****
*****
*****
*****
*****
class StarTriangle
{
public static void main(String[] args)
{
int i, j;
for(i=1; i<=5; i++)
{
for(j=1; j<=5; j++)
{
System.out.print("*");
}
System.out.println("");
}
}
}
Star pattern : 6
class StarTriangle
{
public static void main(String[] args) {
int i, j;
for (i = 1; i <= 5; i++) {
for (j = 1; j < i; j++) {
System.out.print(" ");
}
for (j = 1; j <= 5; j++) {
System.out.print("*");
}
System.out.println("");
}
}
}
Star pattern 7
class StarTriangle {
public static void main(String[] args) {
int i, j;
for (i = 1; i <= 5; i++) {
for (j = 1; j <= i; j++) {
if (j == 1 || j == i || i == 5) {
System.out.print("*");
} else {
System.out.print(" ");
}
}
System.out.println("");
}
}
}
Star pattern 8
class StarTriangle {
public static void main(String[] args) {
int i, j;
for (i = 1; i <= 5; i++) {
for (j = 1; j <= i; j++) {
if (j == 1 || j == i || i == 5) {
System.out.print("*");
} else {
System.out.print(" ");
}
}
System.out.println("");
}
}
}
Star pattern 9
class StarTriangle {
public static void main(String[] args) {
int i, j, k;
for (i = 1; i <= 5; i++) {
for (j = i; j < 5; j++) {
System.out.print(" ");
}
for (k = 1; k < (i * 2); k++) {
System.out.print("*");
}
System.out.println("");
}
}
}
Star pattern 10
class StarTriangle {
public static void main(String[] args) {
int i, j, k;
for (i = 5; i >= 1; i--) {
for (j = 5; j > i; j--) {
System.out.print(" ");
}
for (k = 1; k < (i * 2); k++) {
System.out.print("*");
}
System.out.println("");
}
}
}
Star pattern 11
class StarTriangle {
public static void main(String[] args) {
int i, j;
for (i = 1; i <= 5; i++) {
for (j = i; j < 5; j++) {
System.out.print(" ");
}
for (j = 1; j <= (2 * i - 1); j++) {
if (i == 5 || j == 1 || j == (2 * i - 1)) {
System.out.print("*");
} else {
System.out.print(" ");
}
}
System.out.println("");
}
}
Star pattern 12
class StarTriangle {
public static void main(String[] args) {
int i, j;
for (i = 5; i >= 1; i--) {
for (j = i; j < 5; j++) {
System.out.print(" ");
}
for (j = 1; j <= (2 * i - 1); j++) {
if (i == 5 || j == 1 || j == (2 * i - 1)) {
System.out.print("*");
} else {
System.out.print(" ");
}
}
System.out.println("");
}
}
Star pattern 13
*
**
***
****
*****
****
***
**
*
class StarTriangle {
public static void main(String[] args) {
int i, j;
for (i = 1; i <= 5; i++) {
for (j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println("");
}
for (i = 5; i >= 1; i--) {
for (j = 1; j < i; j++) {
System.out.print("*");
}
System.out.println("");
}
}
}
Star pattern 14
class StarTriangle {
public static void main(String[] args) {
int i, j;
for (i = 1; i <= 5; i++) {
for (j = i; j < 5; j++) {
System.out.print(" ");
}
for (j = 1; j <= i; j++) {
System.out.print("*");
}
System.out.println("");
}
for (i = 5; i >= 1; i--) {
for (j = i; j <= 5; j++) {
System.out.print(" ");
}
for (j = 1; j < i; j++) {
System.out.print("*");
}
System.out.println("");
}
}
Star pattern 15
class StarTriangle {
public static void main(String[] args) {
int i, j;
for (i = 1; i <= 5; i++) {
for (j = i; j < 5; j++) {
System.out.print(" ");
}
for (j = 1; j <= (2 * i - 1); j++) {
System.out.print("*");
}
System.out.println("");
}
for (i = 5; i >= 1; i--) {
for (j = i; j <= 5; j++) {
System.out.print(" ");
}
for (j = 2; j < (2 * i - 1); j++) {
System.out.print("*");
}
System.out.println("");
}
}
}
Star pattern 16
class StarTriangle {
public static void main(String[] args) {
int i, j;
for (i = 1; i <= 5; i++) {
for (j = 5; j > i; j--) {
System.out.print(" ");
}
System.out.print("*");
for (j = 1; j < (i - 1) * 2; j++) {
System.out.print(" ");
}
if (i == 1) System.out.println("");
else System.out.println("*");
}
for (i = 4; i >= 1; i--) {
for (j = 5; j > i; j--) {
System.out.print(" ");
}
System.out.print("*");
for (j = 1; j < (i - 1) * 2; j++) {
System.out.print(" ");
}
if (i == 1) System.out.println("");
else System.out.println("*");
}
}
}