Rhombus and Hollow Rhombus star pattern in Java using for loop

Rhombus and Hollow Rhombus star pattern in Java using for loop

In this article, we will discuss the concept of  Rhombus and Hollow Rhombus  star pattern  using for loop Java programming language

In this post, we are going to learn how to write a program to print  rhombus and hollow rhombus shapes in  Java using for loop.

 

Display Rhombus  star patterns Using for loop

Code to print Rhombus star pattern using for loop

This program allows the user  to enter the number of rows and symbols then it will display  the rhombus star  pattern using for loop in Java programming language

Program 1

//Rhombus star pattern program iun Java using for loop
import java.util.Scanner;
public class RhombusStar1{//class declaration
public static void main(String args[]){//main method

 Scanner scan=new Scanner(System.in); 
    //create a scanner object for input
    
System.out.println("Enter the number of rows: ");
//Ask input from the user
int rows=scan.nextInt();
//read the value for rows Store it in the variable rows
System.out.println("Enter Symbol as you wish: ");
//Ask input from the user as symbol
char ch=scan.next().charAt(0);
//Store the symbol in the variable ch entered by user
System.out.print("\n");
for(int i=1; i<=rows; i++){//outer for loop 
//Condition of outer for loop is true 
//control moves to inner for to print space
   for(int j=1; j<=rows-i; j++){//inner for loop
   System.out.print(" ");//print space
   }
   for(int j=1; j<=rows; j++){//inner for loop
   System.out.print(ch);//print symbol after space
}
 System.out.print("\n");//move to next line
}
}
}

When the above code is executed, it produces the following result

 

 

 

Code to Hollow Rhombus star pattern Using for loop

This program allows the user  to enter the number of rows and symbols then it will display  the  Hollow rhombus star pattern using for loop in Java programming language

Program 2

//Drint Hollow rhombus star pattern in Java using for loop
import java.util.Scanner;
public class HolloWRhombusStar1{//class declaration
public static void main(String args[]){//main method

 Scanner scan=new Scanner(System.in); 
    //create a scanner object for input
    
System.out.println("Enter the number of rows: ");
//Ask input from the user
int rows=scan.nextInt();
//Store number of rows in the rows variable entered by user
System.out.println("Enter character as you wish: ");
//Ask input from the user as character
char ch=scan.next().charAt(0);
//Store the character in the ch variable entered by user
System.out.print("\n");
for(int i=1; i<=rows; i++){//outer for loop 
   for(int j=1; j<=rows-i; j++){//inner for loop 
   System.out.print(" ");//print space
   }
   for(int j=1; j<=rows; j++){//inner for loop
   if(i==1 || i==rows || j==1 || j==rows){
   System.out.print(ch);//print symbol after space
   }
   else{
         System.out.print(" ");//print space
   }
}
 System.out.print("\n");//move to next line
}
}
}

When the above code is executed, it produces the following result

 

 

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