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What is the result of this code?

1: class MainClass {

2:   final String message(){

3:     return "Hello!";

4:   }

5: }

6: class Main extends MainClass{

7:   public static void main(String[] args) {

8:     System.out.println(message());

9:   }

10:  String message(){

11:    return "World!";

12:  }

13:}

• It will not compile because of line 10.
• "World!"
• "Hello!"
• It will not compile because of line 2.

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Given this code, which command will output "2"?

class Main {

  public static void main(String[] args) {

    System.out.println(args[2]);

  }

}

• java Main 1 "2" "2" 5
• java Main 1 2 "3 4" 5
• java Main 1 "2" "3 4" 5
• java Main.class 1 "2" 2 5

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What is the output of this code?

class Main{

  public static void main(String[] args){

    int a = 123451234512345;

    System.out.println(a);

  }

}

• "123451234512345"
• "12345100000"
• Nothing—this will not compile.
• a negative integer value

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What is the output of this code?

class Main {

  public static void main(String[] args) {

    String message = "Hello world!";

    String newMessage = message.substring(6, 12)

      + message.substring(12, 6);

    System.out.println(newMessage);

  }

}

• A runtime exception is thrown.
• "world!!world"
• The code does not compile.
• "world!world!"

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How do you write a foreach loop that will iterate over ArrayList<Pencil> pencilCase?

• for (Pencil pencil : pencilCase) {}

Iterator iterator = pencilCase.iterator();

for (iterator.hasNext()) {}

•  
• for (pencilCase.next()) {}
• for (int i = 0; i < pencilCase.size(); i++) {}

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