What is the point/use in code blocks?

Thanks for that Kevin! That makes sense. So how do I know when to start/end a code block when I'm using them in my code?

Hey Alexander,

All programming languages use code blocks. You cant write code without code blocks.You can write some lines of simple code but as you dive deeper and explore classes and objects, its not possible without code blocks. Think of the code blocks as the first capital letter and punctuation in a sentence. Java is a object oriented programming language with classes, objects, methods, etc. How do you create all those things? With code blocks.

Lets take a look at this java code:

public class Hello{
  public static void main(String arg[]){
    System.out.println("Hello.");
  }

public void sayWhatsUp () {
System.out.println("Whats Up?");
}

}

When we create our hello class, the word "Hello" is printed out. If we call the sayWhatsUp() method, it will print out the word "Whats Up?" to the console. You might have not gotten this far but just understand that the code above can print out two things. First off without the code blocks, the code checker cant distinguish what belongs to what and what we want to happen. In the above code, we dont want both those words to be printed. We only wants "What's up" to be printed only when we call it.

It is not even possible to create this code or any code without code blocks. Lets look at it with no code blocks:

public class Hello
public static void main(String arg[])
System.out.println("Hello.");
public void sayWhatsUp () 
System.out.println("Whats Up?");

First off this is pretty hard to read, second off it breaks all the rules of java, third this code will stop working before the code checker even finishes reading the first line.

To write code, you must write it in code blocks. Otherwise think of it as run on sentences with no periods and also with terrible grammar. If you had a 500 page book with run on sentences and terrible grammar and things dont even make sense, would you want to read it? I highly doubt it. We want things to be easy to read, organized, and neat. Same thing with java code. Even if your still wondering why we need code blocks, as you progress along the track, you absolutely will see and realize how we need code blocks not only in java but in all other languages. Just continue along the track, really undestand what Craig does in each video, and before no time you will have a solid grasp on this concept.

Dont forget to mark as best answer so that others with the same question can see this!

Thanks and happy coding!

Kevin