SalesmenEarnings, Java

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//'main' method must be in a class 'Rextester'.
//openjdk version '11.0.5' 
//Salesmen's Earnings
//this code is created by Rezaul Hoque on September 24,2021;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();

double a[] = new double[size];
double b[]=new double[size];
System.out.println("Enter the " + size + " salesmen’s salary:\n");

for (int i = 0 ; i < a.length; i++ ) {
           a[i] = input.nextDouble();
        }
System.out.println("Enter " + size + " salesmen’s monthly sales:\n");
for (int i = 0 ; i < b.length; i++ ) {
           b[i] = input.nextDouble();
        }

double tot[]= new double[size];
for (int i = 0 ; i < size; i++ ) {
           tot[i] =a[i]+b[i]*0.09;
}
System.out. println("sl  "+"Salary  "+"Gross Sales   "+ "Earnings\n");
for (int i = 0 ; i < size; i++ ) {
System.out.println(i+1 +"     "+a[i]+"     "+b[i]+"      "+tot[i]);
}
input.close();
  }
}

[ - ] Show input
Compilation time: 0.72 sec, absolute running time: 0.3 sec, cpu time: 0.34 sec, memory peak: 42 Mb, absolute service time: 1,15 sec