Thread: software can discover the errors of java codes ?

Originally Posted by websit

Hi, every body

I need help in many soloution of java

is there are a software can discover the errors of java codes?

many thanks

What kind of errors do you mean?
If you mean syntax error, so there is a java compiler that checks the code against Java syntax.
If you mean design flaws or bad practices, have a look at Sonar tool.

java exception

Smells like homework.

This kind of thing comes from practice. There really isn't a way around it, and even if there was, you'd just be cheating yourself out of an important learning process. Take a look at the compiler errors, and fix them. Then have a look at the logic of the program. Does it make sense? What is it trying to do? Is that what it does?

Originally Posted by macko

That's just it kevin.. I don't think that he has a compiler. He was asking where to find one.

NetBeans, BlueJ or Eclipse as i said.. google them.

Hmm okay, I don't think so, but maybe you're right.

But even if you are right, those aren't compilers, they're IDEs. You'll still need to download the compiler (javac), which comes with the JDK.

Recommended reading: "Hello World!" for Microsoft Windows (The Java™ Tutorials > Getting Started > The "Hello World!" Application)

I absolutely, 100% agree with Tjstretch. Eclipse is for people who are already comfortable with writing Java code and consulting the API and tutorials, who know exactly what it's doing behind the scenes, how to set up packages, classpaths, create jars, etc.

I personally use jEdit when I'm entering unknown territory. Eclipse might seem like a shortcut, but I promise you, relying too heavily on an IDE will make you into a terrible programmer.

Originally Posted by macko

hehe take me for example ill have to give jEdit a go.

Don't feel bad, it can be tough to not be tempted by what seems like a shortcut. But everybody has to start from scratch when they're learning new stuff. For example, I'm using jEdit to write prolog stuff right now, and later I'm planning on using jEdit to play around with some hobby JSP stuff I've been working on. I could switch over to something that does the setup stuff for me, but then I'd have no idea what it was doing, and it would actually take me much longer to figure things out. Starting with the basics guarantees that you have those down, because they are absolutely essential to being a good programmer.

PS- Isn't it like 7 AM where you are right now? Shouldn't you go to bed?!

Agreed, it's important to know how to do simple tasks manually, but I personally take the philosophy of "I've done it, I could do it again, but I'd rather not."

The importance of different types of information is more important to me. I could spend my time trying to memorize the package hierarchy (or Google-ing it every time), or I could spend it learning about the class hierarchy and how to use the particular class for what I'm interested in.

To this end, Eclipse is my favorite tool. The level of automation is adjustable to your tastes, with the default being basically only auto-complete and their handy error wizard. I have it turned up fairly high for a few reasons: It saves me time, it lets me focus on what it is I want to accomplish, and it produces cleaner, more consistent code. The advanced debugging tools are also nice when you know how and when to use them correctly and efficiently, though I also often use basic command line output for the sake of simplicity.

A few of my favorite Eclipse tools (in no particular order):

1. Auto-complete (I admit, I'm kind of reliant on this)
2. Auto-format
3. Generate getters & setters
4. Automatic imports
5. Debugger
6. Suggested Fixes
7. Refactoring
8. User Libraries
9. Syntax Highlighting

I'm really starting to appreciate Eclipse's GUI designer, too. The code it generates is easy to go in and tinker with manually. This lets me get the general workings setup in the GUI editor where it's easier, while letting me go in and make the small tweaks to get the desired functionality I want. This is the major point of why I've disliked Netbeans' GUI designer, and why I like WPF over Windows Forms.

/rant

Anyways, my suggestion is that Eclipse is a perfectly acceptable IDE for a beginner to start out with (I did). Above all, know how to do something manually, and if you continue to do it manually, so be it, but there are a lot of great tools built in to help the development process, particularly for larger projects. I can be a productive and happy programmer without ever having to write another import statement again