Although most of object oriented programming languages are mostly platform dependent we generally use soma programms to execute them. For instance JCreator is mostly known one taht you can access from http://www.jcreator.com.
And the other program is Microsoft Visual Studio. By it you can work on many languages. One of them is the newest C# which i will show examples later.

In this article i will give an example code in Java again.

import javax.swing.JOptionPane;
public class hmwrk4_1 {
public static void main (String[] args) {
System.out.println("Feet Meters\n---- ------");
for(double i=1.0; i<=10.0; i++) {
double meter=footToMeter(i);
if(i==10.0) {
System.out.println(i+" "+meter); }
else System.out.println(i+" "+meter); }
System.out.println("\nMeters Feet\n------ ----");
for(double i=20.0; i<=65.0; i+=5){
double foot=meterToFoot(i);
String s1=String.valueOf(foot);
if(foot>99.999){
String s2=s1.substring(0,7);
System.out.println(i+" "+s2); }
else{ String s2=s1.substring(0,6); System.out.println(i+" "+s2); } } }
public static double footToMeter(double foot){
double meter=0.305*foot;
return meter;}
public static double meterToFoot(double meter){
double foot=meter/0.305; return foot;}}

In comment you can write on what the program does. I will add it on the article later