Skip to main content

Top Ten Things Every Java Programmer Should Know

These are in no particular order, but these are things that all Java programmers should probably know.
  1. Who Invented Java, and when?
    James Gosling, at Sun Labs, around 1992; the group was building a set-top box and started by "cleaning up" C++ and wound up with a new language and runtime.
  2. What does Java stand for?
    Java is not an acronym (not even Just Another Vague Acronym :-)). The language was first named Oak, after the tree outside James' window. The lawyers found another language called Oak so, legend has it, the gang went out to the local cafe to discuss names and wound up naming it after the beverage Java (which is in turn named after the island of Java). Possible confirmation of this theory.
  3. What is the JLS?
    JLS is The Java Language Specification. Every developer should buy or download (free) this specification and read it, a bit at a time.
  4. How do changes get into Java?
    JCP (Java Community Process).
  5. Why is there no printf-like function in Java?
    Actually there are! This was fixed in Java 5; see Java Cookbook (2nd Edition) Chapter 9. Java 5 (J2SE 1.5) includes printf (and scanf), String.format(), and lots more.
  6. What is the GOF book?
    The Gang Of Four book is entitled Design Patterns, by Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides. This is a very good book. You should read it. Not when you're just learning Java, but when you've let it sink in for about six months.
  7. What other Java book do I need?
  8. What is the Java Cookbook?
    That's a book of Java recipes (for the programming language, not the coffee, but some bookstores still wind up listing it under Cooking).
  9. What other Java sites do I need to know about?
  10. What else do I need to know?
    Everything! But nobody can know everything about Java - the subject is now too vast. Imagine somebody saying that they know everything about every single Microsoft product and technology. If someone like that calls me, I'm always out.

Labels

Labels:

Comments

Post a Comment

Your Comment Here!.....

Popular posts from this blog

Introduction to JavaScript- Basics

JavaScript is the most popular scripting language on the internet, and works in all major browsers, such as Internet Explorer, Firefox, Chrome, Opera, and Safari. What You Should Already Know Before you continue you should have a basic understanding of the following: HTML and CSS If you want to study these subjects first, find the tutorials on our Languages page . What is JavaScript? JavaScript was designed to add interactivity to HTML pages JavaScript is a scripting language A scripting language is a lightweight programming language JavaScript is usually embedded directly into HTML pages JavaScript is an interpreted language (means that scripts execute without preliminary compilation) Everyone can use JavaScript without purchasing a license Are Java and JavaScript the same? NO! Java and JavaScript are two completely different languages in both concept and design! Java (developed by Sun Microsystems) is a powerful and much more complex programming language ...
Post a Comment
Read more

IBM Sample Problem Using Speed

Question 1 A policeman starts chasing a thief 30 minutes after the thief had run from a spot. With an average speed of 20km per hour, he takes 2 hours to catch the thief. What is the average speed of the thief? a)16km/hr b)25km/hr c)24km/hr d)18km/hr Answer : a)16km/hr Solution: As given, the average speed of the policeman = 20km/hr. He takes 2 hours to catch the thief, so from formula, "distance = speed x time" we have The total distance covered by the police to catch the thief = 20 x 2 = 40 km (This value is also equal to the distance run by thief before being caught by Police.) Policeman had started late by 30 minutes and took 2 hours to catch the running thief. Above means that the thief takes (30minutes + 2 hours =) 5/2 hours to reach 40km. So the speed of the thief = 40/(5/2) = 40 x 2 / 5 = 16 km/hr. Hence the answer is 16km/hr. Question 2 From a particular spot, Tom started to chase Jerry which had left the spot before 30 minutes. Tom ran acro...
Post a Comment
Read more

MCA - Syllabus, Notes, Question Papers, Projects

MCA - Syllabus, Notes, Question Papers, Projects : SEMESTER - 1 Syllabus: Syllabus PDF Notes: Semester 1 Notes Question Papers:  Project: SEMESTER - 2 Syllabus: Syllabus PDF                                   Notes: Semester 2 Notes Question Papers:  Projects:  SEMESTER - 3  Syllabus: Syllabus PDF                                   Notes: Semester 3 Notes Question Papers:  Project: SEMESTER - 4  Syllabus: Syllabus PDF                               ...
Read more