UserDefinedBar, Java

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//'main' method must be in a class 'Rextester'.
//openjdk version '11.0.5' 
//write a program that reads some numbers, each between 1 and 30.For each number read your program should draw that number of adjacent hearts;
//bar code credit goes to H.P. Deitel and  P.J. Deitel, Deitel & Associates Inc
//remaining parts of the codes are created by Rezaul Hoque on September 26,2021;contact: jewelmrh@yahoo.com

//note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their learning;

import java.util.Scanner;

class Rextester{
public static void main(String args[]){
Scanner input=new Scanner(System.in);

System.out.println("Enter size of the arrays:\n");
        int size = input.nextInt();

int a[] = new int[size];

System.out.println("Enter " + size + " numbers between 1 & 30:\n");

for (int i = 0 ; i < a.length; i++ ) {
           a[i] = input.nextInt();
        }
String display= "Number\t"+" Horizontal Bar";
for(int l=0;l<a.length;l++){
display +="\n"+a[l]+"\t";
for(int k=0;k<a[l];k++)
display +="❤";
}
System.out.println(display);
input.close();
  }
}

[ - ] Show input
Compilation time: 0.82 sec, absolute running time: 0.47 sec, cpu time: 0.44 sec, memory peak: 41 Mb, absolute service time: 1,33 sec