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• How to retrieve content of a Java GCache object in a Google AppEngine application

  - by kodra

  The methods values() and keySet() throw java.lang.UnsupportedOperationException Anybody know of a workaround or have a working example using a lower-level API?

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• How to repair Java in Ubuntu after trying to switch to Java 6 using update-java-alternatives

  - by Kau-Boy

  I tried to switch from Java 5 to Java 6 using the "update-java-alternatives" command like explained on this page: https://help.ubuntu.com/community/Java But afterwards I get the following error when I tried to execute java: root@webserver:~# java Error occurred during initialization of VM Could not reserve enough space for object heap Could not…

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• Is the offical Sun Java EE tutorial the best way to learn how to make Java web apps?

  - by Nick

  I've been a web developer for almost a decade. I've mostly used classic ASP/JavaScript and I'd like to move into Java based apps. I have a decent understanding of Java itself (enough to know how to lookup what I don't know) and I spent some time doing minor work on a JSF/Spring/Hibernate app, but from what a trusted coworker told me, this…

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• Java EE Module Dependencies in web project?

  - by Sled

  Hey guys, I have this webprojec to which I have to add a jar from another EJB project. Normally I'd right-click the webproject and go to properties - Java EE Module Dependencies. I don't know if it is because I upgraded eclipse, or i'm doing something wrong, but I just can't find the "Java EE Module Dependencies" in the properties window.…

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• Java2D: if statement doesn`t work with java.awt.Color

  - by DarkSun

  I have a getPixelColour function: Color getPixelColor(int x, int y) { if(mazeImage == null) System.out.println(":("); int pixel = mazeImage.getRGB(x, y); int red = (pixel & 0x00ff0000) >> 16; int green = (pixel & 0x0000ff00) >> 8; int blue = pixel & 0x000000ff; return new…

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• selectOneMenu - java.lang.NullPointerException when adding record to the database (JSF2 and JPA2-OpenJPA)

  - by rogie

  Good day to all; I'm developing a program using JSF2 and JPA2 (OpenJPA). Im also using IBM Rapid App Dev't v8 with WebSphere App Server v8 test server. I have two simple entities, Employee and Department. Each Department has many Employees and each Employee belongs to a Department (using deptno and workdept). My problem…

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• Java(standard, non standard) or Non Java based Web developement [closed]

  - by LivingThing

  I am new to web development. Initially i thought i would be learning LAMP or WAMP to acquire web developement skills but recently i came across Standard Java based (JSP, servlets) and Non standard Java based (GWT). My question is related to if and how LAMP can be compared with Java (standarad or non stadard)…

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• Anil Gaur on Java EE 7 in the Java Spotlight Podcast

  - by arungupta

  The latest issue of Java Spotlight Podcast, your weekly shot of Java from Oracle, has Anil Gaur on the show for an interview in episode #84. Anil Gaur the VP of Development at Oracle responsible for WebLogic, GlassFish, and Java EE. Anil talks about automatic service provisioning, elasticity,…

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• Webinar, June 27: Application Intelligence and Connected Devices

  - by terrencebarr

  Oracle and Beecham have recently conducted a market survey on use of Connected Devices for M2M & Internet of Things (IoT) applications and new trends. On June 27, 9 am ET the first session in this webinar series addresses intelligence in connected devices. Join Peter Utzschneider from Oracle and Robin…

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• New to Java and Spring. What are some good design principles for an inexperienced java developer like me?

  - by Imtiaz Ahmad

  I am learning Java and have written a few small useful programs. I am new to spring but have managed to understand the concept of dependency injection for decoupling. I'm trying to applying that in my development work in an enterprise setting. What are the 3 most important design patterns I should master…

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• exact answer for “what is j2ee?” - job interview

  - by shuuchan

  I'd like to ask if someone of you knows the exact meaning of JEE. That's because a collegue of mine was asked this question in a job interview, and was "unable to answer properly"... to speak with his interwiewer's words. And when he told me what he said to his interviewer I got really surprised, since…

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• June 2012 Critical Patch Update for Java SE Released

  - by Eric P. Maurice

  Hi, this is Eric Maurice. Oracle just released the June 2012 Critical Patch Update for Java SE.  This Critical Patch Update provides 14 new security fixes across Java SE products.  As discussed in previous blog entries, Critical Patch Updates for Java SE will, for the foreseeable future,…

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• Java EE@NYC Java Meetup

  - by reza_rahman

  On November 19th, I spoke at the New York City Java Meetup Group. It's a well-organized group led by my good friends Dario Laverde and Timothy Fagan - I have spoken there numerous times. I did my Java EE 7 talk (the same one from Java2Days 2012). JavaEE.Next(): Java EE 7, 8, and Beyond from…

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• Error: java.security.AccessControlException: Access denied

  - by RMD

  Hi, I have to connect to a https url with username and password to read a file. I am not able to connect to the server (see the error log below). I do not have much java experience so I need help with this code. I would really appreciate some help to solve this! Thank you. Raquel CODE: import…

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• how can i disable the default console handler, while using the java logging api ?

  - by loudiyimo

  Hi I am trying to implement the java logging in my application. I want to use two handlers. A file handler and my own console handler. Both of my handlers work fine. My logging is send to a file and to the console . My logging is also sent to the default console handler, which i do not want.…

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• Connect to SQLite Database using Eclipse (Java)

  - by bnabilos

  Hello, I'm trying to connect to SQLite database with Ecplise but I have some errors. This is my Java code and the errors that I get on output. Please see if you can help me. Thank you in advance. package jdb; import java.sql.*; public class Test { public static void main(String[] args)…

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• Linux configurations that would affect Java memory usage?

  - by wmacura

  Hi, Background: I have a set of java background workers I start as part of my webapp. I develop locally on Ubuntu 10.10 and deploy to an Ubuntu 10.04LTS server (a media temple (ve) instance). They're both running the same JVM: Sun JVM 1.6.0_22-b04. As part of the initialization script…

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• Setup database for Unit tests with Spring, Hibernate and Spring Transaction Support

  - by Michael Bulla

  I want to test integration of dao-layer with my service-layer in a unit-test. So I need to setup some data in my database (hsql). For this setup I need an own transaction at the begining of my testcase to ensure that all my setup is really commited to database before starting my testcase. …

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• java-COM interop: Implement COM interface in Java

  - by mdma

  How can I implement a vtable COM interface in java? In the old days, I'd use the Microsft JVM, which had built in java-COM interop. What's the equivalent for a modern JRE? Answers to a similar SO question proposed JACOB. I've looked at JACOB, but that is based on IDispatch, and is aimed…

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• java util iterator but cannot import java.util.iterator

  - by qwertzuiop13

  Given this Code import java.util.Iterator; private static List<String> someList = new ArrayList<String>(); public static void main(String[] args) { someList.add("monkey"); someList.add("donkey"); //Code works when I change Iterator to java.util.Iterator,…

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• Java tool to remove warnings from code developed in java 1.4

  - by Nitin Ware

  Hi All, I am working on a soucre code which was developed using java 1.4 but now we want to migrate it to java 6. I was able to compile it but there are tons of warnings related to use of java generics wherever we have made use of collections framework. It is possible to remove them…

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• MyClass cannot be cast to java.lang.Comparable: java.lang.ClassCastException

  - by user2234225

  I am doing a java project and I got this problem and don't know how to fix it. The classes in my project (simplified): public class Item { private String itemID; private Integer price; public Integer getPrice() { return this.price; } } public class…

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• How to run java code using Java code?

  - by Nitz

  Hey Guys i want to do basically two things 1)I want to know is there any way that i can run the java code, using some java code. 2 ) and if it is possible then , and whatever the out put is then it should get that out put [ maybe output or error or exception ] and show on my…

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• Java and gstreamer-java initialisation error

  - by Mark

  I am building a small app which will play streaming audio from the internet in java (mainly internet radio stations). I have decided to use the gstreamer-java library for the sound, which uses JNA. I would like to include a check in the code, to see whether the gstreamer…

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• Oracle Sun Java Roadshow

  - by Lajos Sárecz

  Jövo héten, május 20-án Oracle Sun Java Roadshow konferencia lesz Ramada Plaza Budapest Hotel helszínnel. Hogy jön ide a blog-ba egy Java konferencia kedvcsinálója? A tervezett program ismeretében talán már nem olyan meglepo. Ugyanis az egyik eloadás a közelmúltban…

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