• On September 26, 2024
• By Karmehavannan
• 0 Comment
• Categories: pyramid triangle, star pattern
• Tags: Java language, Java pattern, Pattern

Print Double pyramid star pattern in Java

Print Double pyramid star pattern in Java

In this tutorial, we will discuss the concept of print Double pyramid star pattern in Java

In this post, we will learn how to create double (integrated) pyramid star pattern in Java language.

We can use for loop, while loop or do while loop to display different integrated star patterns.

Here, we will use for loop to print different integrated pyramid star patterns in this programs

Program 1

Integrated pyramid star pattern 1

import java.util.Scanner;
class DoublePyramid1{
public static void main (String args[]){

Scanner scan=new Scanner(System.in);
//create a scanner object for input

System.out.print("Enter the number of rows\n");
int rows=scan.nextInt();//reads rows from user
for(int i=1; i<=rows; i++){    //print upper part
    for(int j=i; j<=rows; j++){
      System.out.print("*"+" ");//print star with space
}
System.out.println();
}

for(int i=rows-1; i>=1; i--){  //print lower part
    for(int j=i; j<=rows; j++){
      System.out.print("*"+" ");//print star with space
}
System.out.println();
        }
    }
}

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

Enter the number of rows
6
* * * * * *
* * * * *
* * * *
* * * 
* * 
*
* * 
* * * 
* * * *
* * * * *
* * * * * *

Program 2

Integrated pyramid star pattern 2

import java.util.Scanner;
class DiamondNumber4{
public static void main (String args[]){

Scanner scan=new Scanner(System.in);
//create a scanner object for input

System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();//reads rows from user

for(int i=1; i<=rows; i++){    //print upper part
    for(int j=1; j=1; i--){
  for(int j=1; j
 
When the above code is executed, it produces the following result
Enter the number ofrows: 6
******
  *****
    ****
      ***
        **
          *
        **
      ***
    ****
  *****
******
Program 3
Integrated pyramid star pattern 3
import java.util.Scanner;
class DoublePyramid2{
public static void main (String args[]){

Scanner scan=new Scanner(System.in);
//create a scanner object for input

System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();//reads rows from user
for(int i=1; i<=rows; i++){    //print upper part
    for(int j=1; j<=i; j++){
      System.out.print(" ");
}
for(int k=i; k<=rows; k++){
      System.out.print("*"+" ");//print star with space
}
System.out.println();
}

for(int i=rows-1; i>=1; i--){  //print lower part
    for(int j=1; j<=i; j++){
      System.out.print(" ");
}
for(int k=i; k<=rows; k++){
      System.out.print("*"+" ");//print star with space
}
System.out.println();
        }
    }
}
When the above code is executed, it produces the following result
Enter the number of rows: 6
*   *   *   *   *   *
  *   *   *   *   *
    *   *   *   *
      *   *   *
        *   *
          *
        *   *
      *   *   *
    *   *   *   *
  *   *   *   *   *
*   *   *   *   *   *
Program 4
Integrated pyramid star pattern 4
import java.util.Scanner;
class DoublePyramid4{
public static void main (String args[]){

Scanner scan=new Scanner(System.in);
//create a scanner object for input

System.out.print("Enter the number of rows: ");
int rows=scan.nextInt();//reads rows from user
for(int i=1; i<=rows; i++){    //print upper part
    for(int j=1; j<=rows-i; j++){
      System.out.print(" ");
}
for(int k=1; k<=i; k++){
      System.out.print("*"+" ");//print star with space
}
System.out.println();
}

for(int i=1; i<=rows-1; i++){  //print lower part
    for(int j=1; j<=i; j++){
      System.out.print(" ");
}
for(int k=1; k<=rows-i; k++){
      System.out.print("*"+" ");//print star with space
}
System.out.println();
        }
    }
}
When the above code is executed, it produces the following result
Enter the number of rows: 6
         *
       *  *
     *  *  *
   *  *  *  *
  *  *  *  * *
*  *  *  *  * *
  *  *  *  *  *
    *  *  *  *
      *  *  * 
        *  *
          *
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