More Java Examples / Practice Programs

All star patterns using java programming Language

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

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

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("");
  }
}
}

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("");
}
}

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("*");
    }

}
}

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