Comparison Summary: Java Hanoi vs. C++ Hanoi

• In Java, we use an import statement, whereas in C++ we use a #include statement.
import java.util.*;
as opposed to
#include <iostream.h>
Java's java.lang.* library is already automatically found, so it is not necessary to import it.
• In C++, main is a free function.  In Java, it is a static method of a class.  Being static, it is tied to a class, but not to any particular object of a class.  This is as close as Java gets to free functions.
• In C++ it is good programming practice to make the main function return an int when complete.  In Java, we always make the main function a void function.  In fact, our declaration should always read
  public static void main(String args[])
• In C++ it is good programming practice to put a function declaration (or prototype)  before defining or using the function.  In Java, this is not necessary.
• In Java, we use
  System.out.println("text");
  as opposed to
  cout << "text" << endl;
• In C++, we have a useful utility for keyboard input, cin.  In Java, this is not built in because there are much cooler ways of getting user input.  However, it is sometimes useful to get input the boring keyboard way, so we have introduced a Keyboard class which you may use for getting keyboard input.
• Variables in Java are always references (excluding primitive types).  In C++ we could have
  TowersOfHanoi hanoiGame;
  and hanoiGame would be an instance of the TowersOfHanoi class.  In Java, that same line just creates a reference to a TowersOfHanoi object.  To construct the TowersOfHanoi object, we need to call new. 
  TowersOfHanoi hanoiGame = new TowersOfHanoi();
• if statements and many general statements will be very similar or the same.