Tuesday

This week will be focused on Java basics

Read and solve the exercises found in Methods

Peer instruction

Question 1 - 3 minutter

What is the value of numberOfCharacters?

public class Question1 {
    public static void main(String[] args) {
        double numberOfCharacters = getNumberOfCharacters("Kea er sej");
    }

    public static int getNumberOfCharacters(String word) {
        System.out.println(word.length());
    }
}

• a) 9

• b) 9.0

• c) 10.0

• d) Compilation error

Question 2 - 3 minutter

What is the value of sum?

public class Question2 {
  public static void main(String[] args) {
    int a = 3;
    int b = 6;
    double sum = sum(a, b);
  }

  public static double sum(double a, double b) {
    System.out.println(a + b);
  }
}

• a) 9

• b) 9.0

• c) 36

• d) Compilation error

Question 3 - 5 minutter

What is the value of sum3

public class Question3 {
  public static void main(String[] args) {
      int a = 4;
      int b = 2;
      double sum1 = sum(a, b);
      double sum2 = sum(b, a);
      double sum3 = sum1 + sum2;
  }

  public static double sum(int a, double b) {
      return a * b;
  }
}

• a) 8

• b) 16.0

• c) 8.0

• d) Compilation error

Question 4 - 5 minutter

What is the value of subtraction

public class Question4 {
  public static void main(String[] args) {
    int a = 7;
    int subtraction = (int) isOdd(a);
  }

  public static double isOdd(int a) {
    return a % 3;
  }
}

• a) true

• b) 1

• c) 1.0

• d) Compilation error