If I have a Handler handler = new Handler() and run a delayed task for it handler.postDelayed(xxx, xxx), is that possible to check has the postDelayed() was called or not? Answer is that possible to check has the postDelayed() was called or not? One quick fix, in method assign some boolean variable to true and then just perform checking.
Java Bouncy Castle OCSP Url
I am using bouncy castle 1.48 to verify certificate validation with OCSP. It works good. But I’m using Ocsp Url as static variable and I want to read it from certificate. Url is written in certificate as Authority Info Access I got org.bouncycastle.asn1.x509.AuthorityInformationAccess object from certificate which writes AuthorityInformationAccess: Oid(1.3.6.1.5.5.7.48.1) but cant get Url from there Answer I found the
Should you cap the java heap size if you don’t need that much?
Let’s assume I have plenty of memory on a production Unix box. And I have a Java backend application that does not use all that much heap. Initial tests show that it seems fine with 100MB. However, …
Java URI doesn’t encode semicolons in path. Best practice here?
I’m working on a project where a local file is exported via HTTP. This involves getting a file URI, relativizing it using the exported path, tacking it onto the export URI and then handling that as a URL on the receiving end. Normally this works fine, but I run into trouble when the filename contains a semicolon. I narrowed it
Java – Iterating over every two elements in a list
What’s the best way to iterate over a list while processing 2 elements at the same time? Example: Results in: I would like to achieve: Answer Just increase i by 2:
Subclassing java.util.logging.Formatter doesn’t work
I am using java.util.logging for logging (I don’t want to use log4j or anything else). This is my complete private logging.properties: This is the code in my program: Since this gives each log message on 2 lines, I tried this How do I get java logging output to appear on a single line? Copied the LogFormatter class in the first
Ignoring property when deserializing
I have a simple interface with getter and setter for a property. I have another class UserAccount which implements this interface. My problem is that I want to serialize the money property but ignore while deserializing it i.e., dont accept any values from the user for this property. I have tried @JsonIgnore on setter and @JsonIgnore(false) on the getter, it
HashMap value auto increment
when I was coding, one question occurred to me, which is if the value part(Integer) in the HashMap is able to auto-increment in the following scenario? Answer Consider using an AtomicInteger: Also consider using a for loop to simplify the code.
how to zip a folder itself using java
Suppose I have the following directory structure. Inside january there are suppose two excel files say A.xls and B.xls. There are many places where it has been written about how to zip files using java.util.zip. But I want to zip the january folder itself inside reports folder so that both january and january.zip will be present inside reports. (That means
Eclipse Juno WindowBuilder Palette is Empty
I’m using Eclipse 4.2 (Juno) for Java EE and just installed WindowBuilder plug-n. At this time I’m building Java SE Application with Swing components. The Palette is completely empty (no widgets). Is it a sign of incomplete installation or have I (hopefully) missed something obvious? I was able to select New -> Other -> WindowBuilder -> Swing Designer -> JPanel.