1. ./Float.java
2. ./Hello.java
3. ./TestScore.java

/**
 * This class demonstrates how to specify floats vs doubles in Java.
 *
 * But, it's easier to just use doubles.
 *
 * @author Sara Sprenkle
 */
public class Float { 
  
   /**
    * Called when user runs 
    *  java Float
    */
   public static void main(String[] args) {
       float f = 3.14;
       // double f = 3.14;
       System.out.println(f);
   }
}

/**
 * Our first Java class
 *
 * All code in a Java program must belong to a class.
 * There is typically one class per file, and the file name is ClassName.java
 * Compile this code using
 *     javac Hello.java
 * Run the compiled bytecode Hello.class using
 *     java Hello
 * 
 * @author Sara Sprenkle
 */
public class Hello {  //File must be saved as Hello.java
  
   /**
    * Called when user runs 
    *  java Hello
    */
   public static void main(String[] args) { // Blocks start/end with {}
       System.out.println("Hello!"); // Lines end with ;
   }
}

/**
 * Demonstrate automatically changing a double to a String in a print statement
 * and casting a variable to a certain type.
 *
 * @author Sara Sprenkle
 */
public class TestScore {

    public static void main(String[] args) {
        int totalPoints = 110;
        int earnedPoints = 87;

        /* try removing the (double) below to see what happens. */
        double testScore = (double) earnedPoints/totalPoints;

        System.out.println("Your score is " + testScore);   
    }
    
}