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