Display solid rectangle and square star pattern in Java

Karmehavannan

6 years ago

Display Solid rectangle and square star pattern in Java

In this article, we will discuss the concept of Program to Display solid rectangle or square star pattern in the Java programming language

In this post, we are going to learn how to write a program to print solid rectangle or square star pattern in Java using for loop, while loop and Do-while loop with example programs

Program 1

Display solid rectangle or square star pattern

Print solid rectangle using for loop

This program allows the user to enter the number of rows and columns and then it will display the solid rectangle or square pattern using for loop in Java programming language

import java.util.Scanner;
class RectanglePat1{
public static void main(String args[]){
int rows,columns;//declare variable size
    Scanner scan=new Scanner(System.in); 
    //create a scanner object for input
System.out.print("Enter the nunber of rows: ");
rows=scan.nextInt();
//get input from the user for row

System.out.print("Enter the nunber of rows: ");
columns=scan.nextInt();
//get input from the user for coloum


for (int i=1; i<=rows; i++){
    for (int j=1; j<=columns; j++){
        System.out.print("*");
    }
    System.out.print("\n");
}
    
}
}

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

Display solid rectangle and square star pattern in Java — Square and rectangular pattern

Program 2

Print solid rectangle using while loop

This program allows the user to enter the number of rows and columns and then it will display the solid rectangle or square pattern using while loop in Java programming language

import java.util.Scanner;
class RectanglePat2{
public static void main(String args[]){
int rows,columns;//declare variable size
    Scanner scan=new Scanner(System.in); 
    //create a scanner object for input
System.out.print("Enter the nunber of rows: ");
rows=scan.nextInt();
//get input from the user for row

System.out.print("Enter the nunber of rows: ");
columns=scan.nextInt();
//get input from the user for coloum

int i=1;
while( i<=rows){
    int j=1;
    while(j<=columns){
        System.out.print("*");
        j++;
    }
    System.out.print("\n");
    i++;
}
    
}
}

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

Program 3

Using the do-while loop

This program allows the user to enter the number of rows and columns and then it will display the solid rectangle and square pattern using the do-while loop in Java programming language

import java.util.Scanner;
class RectanglePat3{
public static void main(String args[]){
int rows,columns;//declare variable size
    Scanner scan=new Scanner(System.in); 
    //create a scanner object for input
System.out.print("Enter the nunber of rows: ");
rows=scan.nextInt();
//get input from the user for row

System.out.print("Enter the nunber of rows: ");
columns=scan.nextInt();
//get input from the user for coloum

int i=1;
do{
    int j=1;
    do{
        System.out.print("*");
        j++;
    }while(j<=columns);
    System.out.print("\n");
    i++;
}while( i<=rows);
    
}
}

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