Assessment: Writing Methods

Section 9.7 Assessment: Writing Methods

Subgoals for Writing Methods.

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

1.

Q1: Fill in the blanks for a public method header that would work for this call:

int fob;
fob = obj.trip(4.1, "alphabet", 8);

_______ _______ trip (_______ one, _______ two, _______ three)
   A       B             C            D            E
{
        /* logic */
}

Blank A:
Blank B:
Blank C:
Blank D:
Blank E:

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2.

Q2: Fill in the blanks for a public method header that would work for this call:

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obj.advance();

_______ _______ advance () { /* logic */ }
   A       B

Blank A:
Blank B:

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3.

Q3: Fill in the blanks for a private method header that returns a String and accepts two integer parameters.

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_______ _______ calculate (_______ one, _______ two)
   A       B                  C            D
{
   /* logic */
}

Blank A:
Blank B:
Blank C:
Blank D:

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4.

Q4: Fill in the blanks for a private method header that returns nothing and takes no parameters.

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_______ _______ nada () { /* logic */ }
   A       B

Blank A:
Blank B:

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5.

Q5: 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.

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import java.util.*;
public class main{
   public static double avg (int one, int two, int three) {
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      int sum = one + two + three;
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      return sum / 3.0;
   }
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   public static void main(String[] args){
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      System.out.println(avg(1, 2, 5));
      System.out.println(avg(2, 4, 10));
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   }
}

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