page redirect in Javascript

JavaScript Location Object also have these three methods

1. assign() -- Loads a new document.
2. reload() -- Reloads the current document.
3. replace() -- Replaces the current document with a new one

You can use assign() and replace methods also to redirect to other pages like these

window.location.assign("http://www.stackoverflow.com");

window.location.replace("http://www.stackoverflow.com");

The difference between replace() and assign()  is that replace() removes the URL of the current document from session history, means it is not possible to use the "back" button to navigate back to the original document. So use the assign() method if you want to load a new document, and also want to navigate back to the original document.

Apart from the above,

window.location.href = "http://stackoverflow.com";

This is basically simulating the click of a link

Reference

http://stackoverflow.com/questions/503093/how-can-i-make-a-redirect-page-in-jquery-javascript#

A few good men :)

The talented Jack Nicholson stole the show with this dramatic monologue from "A Few Good Men" -  https://www.youtube.com/watch?v=9FnO3igOkOk


Here 's a tribute to one of my all-time favorite movie monologues.

Developer: You want answers?

Product Manager: I think I'm entitled to them.

Developer: You want answers?

Product Manager: I want the truth!

Developer: You can't handle the truth! we live in a world that has software applications. And those applications have to be developed by men with coding skills. Who's gonna do it? You? I have a greater responsibility than you can possibly fathom. You weep for deadlines and you curse the developers. You have that luxury. You have the luxury of not knowing what I know: that missing the deadlines, while tragic, probably improved code quality. And my existence, while grotesque and incomprehensible to you, improved code quality...You don't want the truth. Because deep down, in places you don't talk about at scrum meetings, you want me on that sprint. You need me on that sprint.

We use words like SOLID,KISS,DRY...we use these words as the backbone to a life spent developing something. You use 'em as a punchline. I have neither the time nor the inclination to explain myself to a man who presents and takes credit for the product that I develop, then questions the manner in which I develop it! I'd rather you just increased my salary and went on your way. Otherwise, I suggest you pick up a laptop and write code. Either way, I don't give a damn what you think you're entitled to!!

Product Manager:  Did you break the code ?

Developer: (quietly) I wrote the code as per the design.

Product Manager: Did you break the code ?

Developer: You're goddamn right I did!!

LinkageError: loader attempted duplicate class definition for name - 1

I have encountered this error on a Spring 4.0.5 + Hibernate 3 or 4 application.

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'FMDao' defined in file [D:\apache-tomcat-7.0.34\webapps\mwas\WEB-INF\classes\com\mwas\datalayer\dao\FMDao.class]: Initialization of bean failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.mwas.datalayer.dao.FMDao]: Common causes of this problem include using a final class or a non-visible class; nested exception is
org.springframework.cglib.core.CodeGenerationException: java.lang.reflect.InvocationTargetException-->null
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
.
.
.  
Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class [class com.mwas.datalayer.dao.FMDao]: Common causes of this problem include using a final class or a non-visible class; nested exception is org.springframework.cglib.core.CodeGenerationException: java.lang.reflect.InvocationTargetException-->null
at org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.java:206)
at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:109)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.createProxy(AbstractAutoProxyCreator.java:494)  
.
.
.
at org.springframework.cglib.proxy.Enhancer.create(Enhancer.java:285)
at org.springframework.aop.framework.CglibAopProxy.createProxyClassAndInstance(CglibAopProxy.java:227)
at org.springframework.aop.framework.ObjenesisCglibAopProxy.createProxyClassAndInstance(ObjenesisCglibAopProxy.java:66)
at org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.java:202)
... 36 more
.
.
at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:219)
... 41 more
Caused by: java.lang.LinkageError: loader (instance of  org/apache/catalina/loader/WebappClassLoader): attempted  duplicate class definition for name: "com/mwas/datalayer/dao/FMDao$$EnhancerBySpringCGLIB$$41240c1b"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
at java.lang.ClassLoader.defineClass(ClassLoader.java:615)


After a lot of trial & error, I found that in order to integrate Hibernate with Spring 4.0.5, the following needs to be done

1. Add spring-orm 4.0.5 in your classpath or pom.xml ( if you are using Maven)
2. Add hibernate-core for release 3 or 4 in classpath or pom.xml.
3. Add cglib-nodep 3.1 in classpath or pom.xml

These steps should take care of the dependencies for Spring +t Hibernate integration.

Now, define the LocalSessionFactoryBean & HibernateTransactionManager in your Sprinconfiguration xml based on the hibernate version you intend to use. for e.g. for Hibernate 3, define

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
.
.
</bean>
<bean id="transactionManager"
            class="org.springframework.orm.hibernate3.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory"/>
 </bean>

I encountered this error on a DAO class, annotated by @Repository.  One important step I took  in order to fix this error was to make the class implement an interface. This is weird, huh b'coz as per Spring docs, from 3.2 version CGLIB aop proxy creation don't require the target class to implement an interface


Need to investigate this further!!!

InterruptedException

http://www.ibm.com/developerworks/java/library/j-jtp05236/index.html

Interesting article on understanding
1. Thread Interruption
2. Handling InterruptedException  in Cancelable and NonCancellable scenarios.


A StackOverflow discussion on the same

http://stackoverflow.com/questions/3976344/handling-interruptedexception-in-java