Printing star patterns are the most frequently asked go to questions for the interviewers

for(int i = 1; i <=4; i++){
for(int j = 1; j<= 4; j++){
System.out.print("*");
}
System.out.println();
}

 public static void main(String[] args) {
        for(int i = 1; i <=  4; i++){
            for(int j = 1; j <= i; j++){
                System.out.print("*");
            }
            System.out.println();
         }

    }

  public static void main(String[] args) {
        for(int i = 1; i<=4; i++){
            for(int j = 1; j <=i; j++){
                if(i>=2 && j <= i -1){
                    System.out.print(" ");
                } else {
                    System.out.print("*");
                }
            }

            System.out.println();
        }
    }

 public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int rows = sc.nextInt();
       for(int i =0 ;i < rows; i++){
        for(int j = 0; j <rows -  i - 1; j++){
            System.out.print(" ");
        }
        for(int k= 0; k <= i; k++){
            System.out.print("* ");
        }
        System.out.println();
       }
      sc.close();
    }

 public static void main(String[] args) {
        for(int i = 1; i <= 4; i++){
            for(int j = 4; j >= i ; j--){
                System.out.print("*");
            }
            System.out.println();
        }
    }

 public static void main(String[] args) {
        int count = 0;
        for(int i = 1; i <= 4; i++){
            for(int j =4; j>= i; j--){

                if(count == 0 || count == 1 || count == 2 || count == 4 || count == 5 || count == 7){
                    System.out.print(" ");
                } else {
                    System.out.print("*");

                }
                count++;

            }
            System.out.println();
        }
    }

public static void main(String[] args) {
        for(int i = 1; i <=4; i++){
            for(int j = 1; j <= i; j++){
                System.out.print("*");
            }
            System.out.println();
        }

        for(int i = 1; i <=4; i++){
            for(int j = 3; j >= i; j--){
                System.out.print("*");
            }
            System.out.println();
        }
    }