info.michael-simons.eu

More than a year ago i decided to do the Sun Certified Java Programmer. Shortly after i bought this book, the projects at work and at home were somewhat overwhelming and after all, i realized that a big part of the SCJP is about some weird, crazy and sometimes wrong design decisions of the Java language. Some of them i mentioned under this tag.

Last month i realized i had some spare time, signed up at Prometric and had a 2nd look at the book and on my good Java experience from the last 6 years.

First thing: The “Java 5 Study Guide” isn’t a bad book but the “MasterExam” software on the enclosed cd is a master piece of crap. Not only the gui is as shitty as it gets but some of the answers are just plain wrong.

Second thing: I bought the preparation kit from Whizlabs for 50€. This thing isn’t bad at all and helps you get prepared for the craziness thrown at you.

Third: Being good at something is always great It rocks, really. Like single trail riding or music with electric guitars while driving open. It’s like drugs but not that unhealthy.

After about 2 weeks of preparing, I arrived 30 minutes early at “New Horizons” in Cologne, took the test certainly in english as i prepared with english material and finished somewhat 50 minutes later (you have officially around 3 hours to take the test). The nice proctor asked me if i wanted to use the toilet as she saw my report being printed: 90%, pass! Wooot!

I thought about this post at Jans. I really like the guy who wins a million dollars at Who wants to be a Millionaire and has the guts to call his dad but not ask for help and instead tells him he is going to win a million dollars. I can totally relate to that as i always had fun taking test and scoring at the upper limit

So today i’m gonna eat an extra portion of Cookies & Cream and leave you with the following piece of Java madness:

public class Braindead2 {
	public static void main(String[] args) {
		Integer i1 = 10;
		Integer i2 = 10;
 
		Integer i3 = 128;
		Integer i4 = 128;
 
		Integer i5 = new Integer(18);
		Integer i6 = new Integer(18);
 
		compare(i1, i2);
		compare(20, 20);
		compare(i3, i4);
		compare(i5, i6);
	}
 
	public static void compare(Integer i1, Integer i2) {
		System.out.println("Comparing " + i1 + " and " + i2);
 
		if(i1 == i2)
			System.out.print("same ");
		else
			System.out.print("different ");
		System.out.println("Objects");
 
		if(!i1.equals(i2))
			System.out.print("not ");
		System.out.println("meaningfully equal");
		System.out.println("---");
	}
}

To leave you with some fun, guess the output, leave a comment and mark the next paragraph with your mouse to see the correct answer:

Comparing 10 and 10
same Objects
meaningfully equal
---
Comparing 20 and 20
same Objects
meaningfully equal
---
Comparing 128 and 128
different Objects
meaningfully equal
---
Comparing 18 and 18
different Objects
meaningfully equal
---