Java

TOPIC 05 – YOUR FIRST JAVA PROGRAM

LESSON WORK

QUESTION 1 (GROUP)

Mr. Campeau will help you run your first program.

The work will be done inside the project named Topic05. This will be saved inside the folder that you designated as your workspace.

QUESTION 2

Create a program called MyFirstProgram. It should output to screen "Mr. Campeau is the best!" (or any other message that you want).

QUESTION 3

Examine the code below and find the error (if there is one). You can test your answer by copying and pasting your code into Eclipse and trying to run it.

a)

public class ErrorFinder1

{

public static void main(String[] args)

{

System.out.println("Yo!")

}

}

b)

public class ErrorFinder2

{

public static main void(String[] args)

{

System.out.println("Yo!");

}

}

c)

public class ErrorFinder3

{

public static void main(String[] args)

{

System.out.Println("Yo!");

}

}

d)

public ErrorFinder4

{

public static void main(String[] args)

{

System.out.println("Yo!");

}

}

e)

public class ErrorFinder5

{

public static void main(String[] args)

{

System.out.println("Yo!");

}

}

f)

public class ErrorFinder6

{

public static void main(String[] args)

System.out.println("Yo!");

}

}

QUESTION 4 (TIME PERMITTING)

Now that you have ran a Java program, you can go explore the content of your Topic05 folder. You should find your source code in a .java file. But, you should also find another file that contains the Java bytecode version of your file. What is its file extension?

To find this answer, you need to go look inside your workspace (from Windows, not from Eclipse).

QUESTION 5 (TIME PERMITTING)

WARNING: Special symbols are not displaying correctly on the most recent version of Eclipse. Unfortunately, we will skip this question until a solution can be found.

Find a website that allows you to create text art (such as https://fsymbols.com/draw/). Create some text art (such as a dungeon map or a neat title). Copy and paste that text art to a program and simply make the program output it. Note that you will have to output each line one at a time.

If Eclipse gives you an error when saving your file with the new symbols, you will have to change the character set for the project. Do the following:

1. Window > Preferences

2. General > Workspace

3. Under Text File Encoding, pick Other and UTF-8.