7.3.1. WrMethods-WE3-P1¶

Subgoals for Writing Methods

Define method header based on problem
Define return statement at the end
Define method body/logic
1. Determine types of logic (expression, selection, loop, etc)
2. Define internal variables
3. Write statements

Methods-WE3-P1

Put the code in the right order to create a program that has a public method that returns a String and accepts an integer parameter and returns a flavor of ice cream. There is also a main program that calls the method twice.

        import java.util.*;
public class main{
   public static String flavors (int one) {
---
      String flavor;
---
      if (one == 1)
         flavor = "chocolate";
---
      else if (one == 2)
         flavor = "vanilla";
---
      else
         flavor = "strawberry";
---
      return flavor;
   }
---

   public static void main(String[] args){
---
      System.out.println(flavors(1));
      System.out.println(flavors(5));
---
   }
}

Put the code in the right order to create a program that returns a String and accepts as parameters a double and a String, and concatenates the two values as a temperature along with its base scale. There is also a main program that calls the method twice, once with Celsius and once with Fahrenheit.

        import java.util.*;
public class main{
   public static String temps (double t, String base) {
---
      String temp;
---
      temp = "temperature is " + t + " " + base;
---
      return temp;
   }
---

   public static void main(String[] args){
---
      System.out.println(temps(32.5, "F"));
      System.out.println(temps(0.05, "C"));
---
   }
}

Put the code in the right order to create a program that returns a double, and accepts as parameters 3 integers, and calculates the average of the inputs. There is also a main program that calls the method twice with different values.

        import java.util.*;
public class main{
   public static double avg (int one, int two, int three) {
---
      int sum = one + two + three;
---
      return sum / 3.0;
   }
---

   public static void main(String[] args){
---
      System.out.println(avg(1, 2, 5));
      System.out.println(avg(2, 4, 10));
---
   }
}