Here is the source code for each:
CoinToss.java (Main)
public class CoinToss {
public static void main(String[] args) {
System.out.println("Heads or Tails?");
Coin c = new Coin();
c.chance();
CoinTossHelper check = new CoinTossHelper();
String userGuess = check.getUserInput("Type Heads or Tails");
String result = c.checkInput(userGuess);
if(result.equals("Valid")) {
System.out.println(c.getSide() + " You win!");
} else if(result.equals("Invalid")) {
System.out.println(c.getSide() + " You lose.");
} else {
System.out.println("An error has occured.");
}
}
}
Coin.java
public class Coin {
private String side;
private String result;
String[] choices = {"1","2"};
int length = choices.length;
public void chance() {
int rand1 = (int) (Math.random()*length);
String num = choices[rand1];
if(num == "1") {
side = "Heads";
}
else if(num == "2") {
side = "Tails";
}
}
public String getSide() {
return side;
}
public String checkInput(String userGuess) {
if(userGuess.equals(side)) {
result = "Valid";
} else {
result = "Invalid";
}
return result;
}
}
CoinTossHelper.java
import java.io.*;
public class CoinTossHelper {
public String getUserInput(String prompt) {
String inputLine = null;
System.out.print(prompt + " ");
try {
BufferedReader is = new BufferedReader(new InputStreamReader(System.in));
inputLine = is.readLine();
if (inputLine.length() == 0) return null;
} catch(IOException e) {
System.out.println("IOException: " + e);
}
return inputLine;
}
}
