Hello All.. This time in life.. I have the option and time to move my career into a different technology and into corporate organizations. I was doing LAMP based web programming but with no seriousness. Now I want to revamp my tech skills by learning proper enterprise technologies. J2EE was always in my mind but now I think Java is an ov...
Hello. I have a question about how would I remove a child from a node (root)? Since I can't call remove, if I make the child null, will the children of that child move up? Like, would I just initialize it as null?? Or would I point to the child's child? ...
I'm looking for a java library that allows me to parse a java source file and that gives me an AST representation of the code. Actually I'm only interested in the class and method definitions with their annotations. I don't need the AST of the method code. I'm using this information for code generation. This is why I can't compile the ...
I want everything to log to the console and don't want to have to deal with creating log4j.xml files, etc. I am prototyping some libraries and want to see their full log output. I would like to keep it as pure as possible and not have to introduce unnecessary dependencies like Spring, etc. ...
In developing a web application that will handle credit cards, purchases, digital downloads, is there any real world benefit to using Java over PHP? This will be a store that sells digital downloads. ...
public abstract class ASTNode3 extends ASTNode { ASTNode child1; ASTNode child2; ASTNode child3; public ASTNode3(ASTNode c1, ASTNode c2, ASTNode c3) { child1 = c1; child2 = c2; child3 = c3; } public ASTNode getChild1() { return child1; } public ASTNode getChild2() { return child2; ...
Hey Im trying to use generic types for the first time in Java , as I only want my constructor to accept classes that implement the "Anealable" interface. theres a problem with my code by the only error I get is "Illegal start of Type" which is not getting very far with trying to make it work here is the code for my class package simul...
Hello All, I am very new to using Jquery and Json. I have a servlet that is returning an array of JSONObject's ( basically a JSONArray object ). I am trying to parse this array within JavaScript and am running into trouble here. I have a javascript variable "var result" that gets the result from the servlet and I am trying to parse it...
I have come up with the following pointcut that I use for tracing method entry/exit. It's not broken and also does what I want but: 1- I find it looks clumsy or could be more elegant; and 2- I don't know if it is bulletproof. // tracing the execution of all methods except: // - toString and descendants // - methods identified with @NotT...
I love vim, but not having things like IntelliSense/Code completion from Eclipse makes it pretty difficult. I know, I know, I should be able to look at method signatures and java docs for the API I am interested in using. I'd love to, but I'd like it to be accessible from my fingertips instead of having to browse the source tree manually...
If I call: java org.antlr.Tool -o outdir sources/com/example/Java5.g ...with antlr-3.1.3 the parser and lexer code will be generated in the directory outdir/sources/com/example. But the generated classes don't have any package statement. I need them to life in the package com.example. Is there a way to specify the target package? ...
In Windows, I made a small script to compile and then run a Java application: javac helloWorld.java java helloWorld helloWorld prints "Hello, world!" and then the command prompt closes immediately. What I want to happen is for the program to execute then have a new line on the command prompt ready to go. EDIT: 1 more stipulation. It ...
NOTE: My original question was about whether the ZXing C# port is reliable, but here, I'm trying to figure out how to use it. Thus, they are not duplicates. I'm trying to use the ZXing C# module, but I'm having trouble. Does anyone who has used ZXing before know how to do it correctly? Unfortunately, the C# documentation is quite small....
Hi, I'm learning Java by making a small game in a JApplet. I got a little problem with my sprite's animation. Here is the code : this.sprite.setBounds(0,0,20,17); this.sprite.setIcon(this.rangerDown); for(int i = 0; i< 16;i++) { this.sprite.setBounds(this.sprite.getX(), this.sprite.getY()+1, 20, 17); this.sprite.update(this.s...
I'm currently using net beans with Java to work on a senior project. Essentially the program is going to create word search puzzles. While I'm still a few weeks from needing a solution, I'm having difficulty thinking of a possible control that could display a word search puzzle (not to be mistaken for a crossword puzzle). ...
Another Hibernate question... :P Using Hibernate's Annotations framework, I have a User entity. Each User can have a collection of friends: a Collection of other Users. However, I have not been able to figure out how to create a Many-to-Many association within the User class consisting of a list of Users (using a user-friends intermedia...
I'm a Java/Netbeans newbie learning how to make a GUI. I was following this tutorial, and I noticed that the "finished" product (first picture in that link) doesn't look like the GUI built through the steps. Why is that? I mean, when I click on the preview button, the GUI looks native (nice) as well. It's just when it's deployed that i...
class eulerThree { public static void main(String[] args) { double x = 600851475143d; for (double z = 2; z*z <= x; z++) { if (x%z == 0) { System.out.println(z + "PRIME FACTOR"); } } } } and the output is: 71.0 839.0 1471.0 6857.0 59569.0 104441.0 486847.0 So, I assume 486847 is the...
Why does it make sense to have Runtime Exceptions UnChecked (as opposed to if they were Checked)? ...
I am planning to start some Java mobile phone development. I downloaded the wireless toolkit, but it asks for the Java SE SDK. I have got to this page - http://java.sun.com/javase/downloads/index_jdk5.jsp. Is a JDK the smae as an SDK? what do they stand for? On the page I think I will need to download the "JDK 5.0 with Java EE". What doe...