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java Programming Glossary: there'sWhy doesn't Java allow overriding of static methods? http://stackoverflow.com/questions/2223386/why-doesnt-java-allow-overriding-of-static-methods for C programmers and was also very fast because there's no going up the class hierarchy to figure out which method to..
Why is it a bad practice to call System.gc? http://stackoverflow.com/questions/2414105/why-is-it-a-bad-practice-to-call-system-gc was a few years back. But still 1.5 gigabyte And you know there's like 1.5 GB of data hanging around in memory it's not like it's.. from the other thread After reading the thread you linked there's a few more things I'd like to point out. First someone suggested.. view_bug.do bug_id 6668279 and in particular that there's a XX DisableExplicitGC VM option. share improve this answer..
Avoiding “!= null” statements in Java? http://stackoverflow.com/questions/271526/avoiding-null-statements-in-java Now you might make the contract that it returns null if there's no appropriate action. That leads the null checking you're talking..
What are the pros and cons of the leading Java HTML parsers? http://stackoverflow.com/questions/3152138/what-are-the-pros-and-cons-of-the-leading-java-html-parsers Here's what I've seen JTidy NekoHTML jsoup TagSoup And if there's a major parser that I've missed I'd love to hear about its pros..
How do I set environment variables from Java? http://stackoverflow.com/questions/318239/how-do-i-set-environment-variables-from-java they mean for the environment to be read only. And there's no System.setenv . So is there any way to set environment variables..
Java generics - type erasure - when and what happens http://stackoverflow.com/questions/339699/java-generics-type-erasure-when-and-what-happens list.add Hi String x String list.get 0 At execution time there's no way of finding out that T String for the list object that..
What's wrong with overridable method calls in constructors? http://stackoverflow.com/questions/3404301/whats-wrong-with-overridable-method-calls-in-constructors much better than telescoping constructors especially when there's a huge number of parameters that belong to many of the same..
Design Patterns web based applications http://stackoverflow.com/questions/3541077/design-patterns-web-based-applications Keep in mind to create a do nothing Action for the case there's no mapping. Let it for example return directly the request.getPathInfo.. FacesContext and ExternalContext classes are doing. Then there's the State pattern for the case that you'd like to add an extra.. In JSF terms this is what the LifeCycle is doing. Then there's the Composite pattern for the case that you'd like to create..
Java Process with Input/Output Stream http://stackoverflow.com/questions/3643939/java-process-with-input-output-stream the first line of input caused the process to exit and there's nowhere to send the second line. I have seen a trick that does..
What is a stack trace, and how can I use it to debug my application errors? http://stackoverflow.com/questions/3988788/what-is-a-stack-trace-and-how-can-i-use-it-to-debug-my-application-errors 57 ... 54 more In this example there's a lot more. What we're mostly concerned about is looking for..
Migrating from JSF 1.2 to JSF 2.0 http://stackoverflow.com/questions/4441713/migrating-from-jsf-1-2-to-jsf-2-0 to follow Facelets 1.x to 2.x migration steps. However there's a PrimeFaces 2.x to 3.x migration guide which might apply as..
Can a progress bar be used in a class outside main? http://stackoverflow.com/questions/4637215/can-a-progress-bar-be-used-in-a-class-outside-main if i iterations progressFrame.dispose end while if there's a value for current payments calculate amount saved if C1 0..
How should I load Jars dynamically at runtime? http://stackoverflow.com/questions/60764/how-should-i-load-jars-dynamically-at-runtime you need to be able to load jars dynamically. I'm told there's a way of doing it by writing your own ClassLoader but that's..
Capturing stdout when calling Runtime.exec http://stackoverflow.com/questions/882772/capturing-stdout-when-calling-runtime-exec then read from the file but my spidey sense is telling me there's a more elegant way of doing it. Suggestions java shell runtime..
Why is char[] preferred over String for passwords? http://stackoverflow.com/questions/8881291/why-is-char-preferred-over-string-for-passwords created the string if another process can dump memory there's no way aside from reflection you can get rid of the data before.. as it goes to avoid this sort of thing. Even if it does there's still the time during which the char contains the actual characters..
How to read a single char from the console in Java (as the user types it)? http://stackoverflow.com/questions/1066318/how-to-read-a-single-char-from-the-console-in-java-as-the-user-types-it is no portable way to do this across operating systems. There's also an interesting discussion thread here . One of the suggestions..
How can I measure distance and create a bounding box based on two latitude+longitude points in Java? http://stackoverflow.com/questions/120283/how-can-i-measure-distance-and-create-a-bounding-box-based-on-two-latitudelongi success using OpenMap to plot a lot of positional data. There's a LatLonPoint class that has some basic functionality including..
How can I tell if I'm running in 64-bit JVM or 32-bit JVM (from within a program)? http://stackoverflow.com/questions/2062020/how-can-i-tell-if-im-running-in-64-bit-jvm-or-32-bit-jvm-from-within-a-program code how do I distinguish between 32 and 64 bit operation There's no public API that allows you to distinguish between 32 and..
How to upload files to server using JSP/Servlet? http://stackoverflow.com/questions/2422468/how-to-upload-files-to-server-using-jsp-servlet excellent User Guide and FAQ carefully go through both . There's also the O'Reilly cos MultipartRequest but it has some minor..
Getting a File's MD5 Checksum in Java http://stackoverflow.com/questions/304268/getting-a-files-md5-checksum-in-java How is it done java md5 share improve this question There's an input stream decorator java.security.DigestInputStream so..
How to avoid Java Code in JSP-Files? http://stackoverflow.com/questions/3177733/how-to-avoid-java-code-in-jsp-files methods then you need to define them as EL functions. There's a standard functions taglib in JSTL but you can also easily..
How do I set environment variables from Java? http://stackoverflow.com/questions/318239/how-do-i-set-environment-variables-from-java process's environment and let the subprocesses inherit it. There's a System.getenv String for getting a single environment variable...
Java generics - type erasure - when and what happens http://stackoverflow.com/questions/339699/java-generics-type-erasure-when-and-what-happens question Type erasure applies to the use of generics. There's definitely metadata in the class file to say whether or not..
http://stackoverflow.com/questions/3655316/browser-cant-access-find-relative-resources-like-css-images-and-links-when-cal It has however to start with the scheme http https etc . There's no neat way to obtain the base context path in plain EL so we..
Does python have an equivalent to Java Class.forName()? http://stackoverflow.com/questions/452969/does-python-have-an-equivalent-to-java-class-forname than it is in Java. I recommend reading this tutorial There's no direct function that I know of which takes a fully qualified..
Is System.nanoTime() completely useless? http://stackoverflow.com/questions/510462/is-system-nanotime-completely-useless this question That post is wrong and nanoTime is safe. There's a comment on the post which links to a blog post by David Holmes.. unlike Intel actually know how to design microprocessors . There's no mention of SPARC or Solaris sadly. And of course we have..
Virtual Memory Usage from Java under Linux, too much memory used http://stackoverflow.com/questions/561245/virtual-memory-usage-from-java-under-linux-too-much-memory-used a lot of effort to reclaiming the pages used be a process. There's little benefit to be gained by doing so and the potential for..
The case against checked exceptions http://stackoverflow.com/questions/613954/the-case-against-checked-exceptions we're only talking about strongly typed languages here There's a clear idea of what an API is in a strongly typed language..
How do I get the CellRow when there is an ItemEvent in the JComboBox within the cell http://stackoverflow.com/questions/7350445/how-do-i-get-the-cellrow-when-there-is-an-itemevent-in-the-jcombobox-within-the includes the row as a parameter. There's a related example here . Addendum To change a value in the same..
What is the difference between Serializable and Externalizable in Java? http://stackoverflow.com/questions/817853/what-is-the-difference-between-serializable-and-externalizable-in-java
http://stackoverflow.com/questions/8281886/stretch-a-jlabel-text suitably large Font size and scaled to fill the component. There's a related example here . import java.awt.Dimension import java.awt.EventQueue..
How are SSL certificate server names resolved/Can I add alternative names using keytool? http://stackoverflow.com/questions/8443081/how-are-ssl-certificate-server-names-resolved-can-i-add-alternative-names-using IP 10.0.0.1 # or subjectAltName DNS www.example.com There's also a nice trick to use an environment variable for this rather..
Access restriction on class due to restriction on required library rt.jar? http://stackoverflow.com/questions/860187/access-restriction-on-class-due-to-restriction-on-required-library-rt-jar eclipse wsdl stub wsdl2java share improve this question There's another solution that also works. I found it on this forum Go..
What are all the different ways to create an object in Java? http://stackoverflow.com/questions/95419/what-are-all-the-different-ways-to-create-an-object-in-java a conversation with a coworker the other day about this. There's the obvious which is to use a constructor but what other ways..
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