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JD1's Personal Development Blog

Over the next year, I plan on learning as much about the Java programming language as possible. I'll be blogging posts I create at http://javadevelopmentforums.com/ here to keep you all updated on my progress.

  1. Scanners

    by , January 29th, 2012 at 15:55 (JD1's Personal Development Blog)
    I forgot to write about the scanner, so I'm going to do that now.

    Basically, a scanner is used to get information from the user. At this stage, the scanner will be used only to gather information from the keyboard. Here's how it works.

    import java.util.Scanner;
    class Class1{
    	public static void main(String args[]){
    		Scanner input = new Scanner(System.in);
    		System.out.println("Enter some text:");
    		System.out.println("The
    ...
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  2. JD1's Personal Development Blog

    by , January 29th, 2012 at 15:54 (JD1's Personal Development Blog)
    Quote Originally Posted by KevinWorkman View Post
    Again, just to nitpick, the tertiary (conditional) operator isn't exactly like an if statement- it simply chooses between two values. You can't, for example, do this:


    boolean blue = true;
    blue ? System.out.println("blue") : System.out.println("red");

    Instead, you'd have to do something like this:

    boolean blue = true;
    String print = blue ? "blue" : "red";
    System.out.println(print);
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  3. 20 Tutorials Summarised!

    by , January 29th, 2012 at 15:53 (JD1's Personal Development Blog)
    Well, I've finally finished watching and summarising (in this thread) the first twenty tutorials of TheNewBoston's Java Programming Tutorial series. I've previously watched all 87 tutorials, but never summarised any of them to the point that the information stuck in my head long enough for me to retain.

    I plan on doing the same sort of thing for the next 67 tutorials and then into the Intermediate Java tutorials.

    Thank you to everyone who has helped me out along the ...
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  4. Conditional Operators

    by , January 29th, 2012 at 15:52 (JD1's Personal Development Blog)
    Basically, I like to look at Conditional Operators as a quick way of implementing an If Statement. That's really all they are. Take a look at this code.

    class Class1{
    	public static void main(String[] args){
    		int age =50;
    		System.out.println(age > 30 ? "You are quite old!" : "You are still young!");
    	}
    }

    You can see that we've initalised an integer with the value of 50. Our Conditional Operator ...
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  5. Constructors

    by , January 29th, 2012 at 15:52 (JD1's Personal Development Blog)
    We can use a constructor to quickly initialise variables as soon as our object is created. If you haven't read the above post, please do - you will become familiar with the code we're using for these examples.

    Here's Class1.

    class Class1{
    	public static void main(String args[]){
    		Class2 class2Object = new Class2("Tony");
    		class2Object.outputName();
    	}
    }

    You can see what we've done here is ...
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