Sometimes you want to have a parameter of InputStream type, but also to be able to choose not to feed your code with any data. In tests it’s probably easier to mock it but in production you may choose to bind null input instead of scattering your code with ifs and flags. compare: class ComposableReprinter … Read more
Here’s a list of tools that “ease the pain” when interacting with simple JDBC: Spring’s JdbcTemplate jOOQ (can be used with SQL strings as well – disclaimer: I work for the vendor) Apache DbUtils (which you’ve mentioned yourself) JDBI sql2o persism
Iterables.toArray() from Guava.
It has been implemented in 2.1 version of Apache IO. To append string to the file just pass true as an additional parameter in functions: FileUtils.writeStringToFile FileUtils.openOutputStream FileUtils.write FileUtils.writeByteArrayToFile FileUtils.writeLines ex: FileUtils.writeStringToFile(file, “String to append”, true);
Of course the second option is more elegant and simple. But if you are concerned about performance you should go for first approach. Second method also fails if a security manager is running. I would go for the first option if I was in your situation. Also there is a mistake in your first approach … Read more
I have added commons-lang-2.6.jar & commons-lang3-3.1-sources.jar… Here’s your problem: commons-lang-2.6.jar doesn’t contain the org.apache.commons.lang3 package, since that’s part of version 3, and commons-lang3-3.1-sources.jar contains the source code, not the byte code. You need to include commons-lang3-3.1.jar instead.
Apache HttpClient 4.1 supports content compression out of the box along with many other features that were previously considered out of scope.
Assuming you have class Entity { final long id; final String data; public long getId() { return id; } public String getData() { return data; } Entity(long id, String data) { this.id = id; this.data = data; } } In Java 8 you can write Collection<Entity> entities = Arrays.asList(new Entity(1, “one”), new Entity(11, “eleven”), new … Read more
You can have both Lang2 and Lang3 in your classpath. Due to incompatibility of Lang2 and Lang3, the package is intentionally changed from com.apache.commons.lang to com.apache.commons.lang3 so that you can have both version in classpath without conflict
Commons HttpClient is an old project that produced HttpClient 3.1. The project was subsumed by the larger Apache HttpComponents project, which produced HttpClient 4.x. It’s rather confusing and a bit political, but the old Commons HttpClient library is now deprecated.