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java Programming Glossary: happenDifference between wait() and sleep() http://stackoverflow.com/questions/1036754/difference-between-wait-and-sleep on whereas a sleep cannot. Also a wait and notify must happen in a block synchronized on the monitor object whereas sleep..
Error java.lang.OutOfMemoryError: GC overhead limit exceeded http://stackoverflow.com/questions/1393486/error-java-lang-outofmemoryerror-gc-overhead-limit-exceeded the problem. The rare cases where I've seen this happen is where some code was creating tons of temporary objects and..
Why do I need to override the equals and hashCode methods in Java? http://stackoverflow.com/questions/2265503/why-do-i-need-to-override-the-equals-and-hashcode-methods-in-java need to override both of them. Let's analyze what whould happen if we override one but not the other and we attempt to use a..
http://stackoverflow.com/questions/2275443/how-to-timeout-a-thread code might run into an infinite loop. I don't want that to happen. So I just want to run that task in a separate thread. The parent..
How to retrieve and display images from a database in a JSP page? http://stackoverflow.com/questions/2340406/how-to-retrieve-and-display-images-from-a-database-in-a-jsp-page improve this question Let's see in steps what should happen To display an image in HTML you need the HTML img element. To..
http://stackoverflow.com/questions/2506488/java-finalize-method-call to the object. As Joachim pointed out this may never happen in the life of a program if the object is always accessible...
Avoiding “!= null” statements in Java? http://stackoverflow.com/questions/271526/avoiding-null-statements-in-java is OK because the code will just fail which is what will happen if you use assertions. The only difference is that with assertions.. The only difference is that with assertions it might happen sooner in a more meaningful way and possibly with extra information.. extra information which may help you to figure out why it happened if you weren't expecting it. 1 is a little harder. If you..
How to use java.net.URLConnection to fire and handle HTTP requests? http://stackoverflow.com/questions/2793150/how-to-use-java-net-urlconnection-to-fire-and-handle-http-requests 1024 User Agent It can happen that a request returns an unexpected response while it works..
http://stackoverflow.com/questions/2864840/treemap-sort-by-value map prints C 1 B 2 A 3 Note that funky stuff will happen if you try to modify either the SortedSet itself or the Map.Entry..
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure http://stackoverflow.com/questions/2983248/com-mysql-jdbc-exceptions-jdbc4-communicationsexception-communications-link-fai and been thoroughly confused something that does not happen often with some other turorials I figured I'd best ask here...
http://stackoverflow.com/questions/299068/how-slow-are-java-exceptions some other data needs to be created... all this already happens in the try statement. The throw statement needs to unwind the.. which makes try itself lightning fast actually nothing happens for try at all in general everything that needs to happen is.. happens for try at all in general everything that needs to happen is already done when the class is loaded by the VM and it makes..
Any good ORM tools for Android development? [closed] http://stackoverflow.com/questions/371538/any-good-orm-tools-for-android-development the CRUD functionality. The rub is that all of this must happen within the Android framework which has its own conventions as..
Java, how to draw constantly changing graphics http://stackoverflow.com/questions/3742731/java-how-to-draw-constantly-changing-graphics fixed up threading so all updates to the model and view happen on the Event Dispatch Thread The ticker runs constantly. When..
How do I import the javax.servlet API in my Eclipse project? http://stackoverflow.com/questions/4076601/how-do-i-import-the-javax-servlet-api-in-my-eclipse-project at Oracle.com basically contains Glassfish. So if you happen to already have downloaded Java EE SDK then you already have..
Hibernate hbm2ddl.auto possible values and what they do? http://stackoverflow.com/questions/438146/hibernate-hbm2ddl-auto-possible-values-and-what-they-do And what is the alternative These are changes that could happen over DB New tables new columns in old tables columns deleted..
Calling awt Frame methods from subclass http://stackoverflow.com/questions/5665156/calling-awt-frame-methods-from-subclass ExampleFrame x new ExampleFrame new Menu What needs to happen when mousePressed ebtn is all the stuff in the Frame will be..
Java: checked vs unchecked exception explanation http://stackoverflow.com/questions/6115896/java-checked-vs-unchecked-exception-explanation It depends on where this code is and what you want to happen. If it is in the UI layer catch it and show a warning if it's..
Creating a memory leak with Java http://stackoverflow.com/questions/6470651/creating-a-memory-leak-with-java like sieve if you frequently redeploy applications that happen to use ThreadLocals in any way. Since the application container..
CSRF, XSS and SQL Injection attack prevention in JSF http://stackoverflow.com/questions/7722159/csrf-xss-and-sql-injection-attack-prevention-in-jsf ' AND u.password md5 ' password ' Imagine what would happen if the enduser chooses the following name x' DROP TABLE user..
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