Overview The last post about reactive programming introduced an experimental library which, among other things, implements method references (aka function pointers) for Java. If Java allowed for such a syntax, I could imagine a succinct example: class TestClass{ int add(int a, int b){ return a + b; } public void test(){ FunctionPointer fp = TestClass.add; … Continue reading Function pointers in Java
Category: java
Java synchronized method concurrent execution
I read this puzzle years ago (unfortunately I can't find the reference) but didn't appreciate it at the time. Java synchronized methods [1] can supposedly be invoked only by a single thread at a time. The essence of aforementioned puzzle was that, if the synchronized method obtains a lock on the object the method belongs … Continue reading Java synchronized method concurrent execution
End-to-end testing Java web applications with an embedded Tomcat
In this instalment on assembly testing [1] I'll talk about how automated system tests run over my Java web applications. The set-up is rather cheap, not very labour-intensive and can incrementally evolve from a simple assembly test (aka smoke test) to a full-fledged system test. Since this post is rather concrete naming tools and frameworks, … Continue reading End-to-end testing Java web applications with an embedded Tomcat
SSLHandshakeException: unsupported certificate
When: loading client certificates from a custom keystore Reason: multiple certificates for the same domain but different purposes, e.g. one certificate handles email authentication, the other authenticates the user against a web server Solution: either fix the buggy code that selects the wrong certificate from the keystore or make sure only one certificate per domain … Continue reading SSLHandshakeException: unsupported certificate
Spring MVC REST controller says 406 when emails are part URL path
You've got this Spring @RestController and mapped a URL that contains an email as part of the URL path. You cunningly worked around the dot truncation issue [1] and you are ready to roll. And suddenly, on some URLs, Spring will return a 406 [2] which says that the browser requested a certain content type … Continue reading Spring MVC REST controller says 406 when emails are part URL path