Tomcat – java.lang.InternalError: name is too long to represent

ByTomas Zezula March 23, 2014

I’ve got the aforementioned exception when I was trying to load a jsp page on Tomcat 6 running in a debug mode. Turns out the problem occurs when a jsp page grows big. It’s a known JVM issue described by bugs 39089 and 6294277. Here is how to solve it without touching the jsp.

Open conf/web.xml In your Tomcat install directory and add a supressSmap parameter to the jsp servlet:

<servlet>
 <servlet-name>jsp</servlet-name>
 <servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
 ..
 <init-param>
  <param-name>suppressSmap</param-name>
  <param-value>true</param-value>
 </init-param>
 ..
</servlet>

SMAP stands for a source map generator (see Javadoc – SmapGenerator). Suppressing it will prevent the jsp be generated into the associated .class file. For full details, see JSR45 – Debugging Support for Other Languages.

Java

String Interpolation in Java

ByTomas Zezula January 10, 2015

Languages like Scala, Ruby or even PHP allow to build dynamic textual content in an elegant and concise way. Is string interpolation available in Java? To set an example of what I mean by “elegant and concise way”, let’s print a result of a simple equation x * y = z, where x, y and z…

Tips & Tricks

Shell script – find a directory and cd to it

ByTomas Zezula August 20, 2015

Quite frequently, I reach for a combo of find and cd. Here is how to do it using a single command. Let’s create a bunch of nested directories, just for the sake of the exercise: mkdir -p x/y/z Result: tree x x └── y └── z Suppose I want to locate the y directory and cd to…

Function calling to fill in the gaps in data

AI | Java | Kotlin | Spring

Spring AI and Challenges with Function Calling

ByTomas Zezula July 28, 2024July 29, 2024

Spring AI boosts developer’s productivity by providing seamless integration with a variety of AI models. This post explores enriching the generic model with additional data coming from custom functions. This technique known as function calling allows to elegantly tap into a variety of external data sources. However, it comes with its own challenges and considerations.

Java

Concurrency patterns – Active Object

ByTomas Zezula August 30, 2014

Active Object pattern decouples method execution from its invocation. Think asynchronous method invocation, callbacks etc. To avoid race conditions, incoming client requests are queued and handled by a scheduler. The scheduler picks a queued object and makes it run its logic. It is object’s responsibility to know what to do when it gets invoked, hence…

Java | Spring

Spring series, part 3: @Lazy

ByTomas Zezula January 25, 2014

Lazy initialization allows for a greater flexibility and performance by delaying bean instantiation to the very last moment. A fairly straightforward feature represented by a simple annotation @Lazy. Yet, as usual, there are a few pitfalls to watch out for. Let’s start with some trivia. Adding @Lazy on the class level is all it takes…

Java | Test Automation | Tips & Tricks

JUnitParams – parameterized unit tests

ByTomas Zezula March 3, 2014

Less unit test code doesn’t necessarily result into poor coverage. I’ve recently entered the paradigm of parameterized tests when refactoring a larger test suite. I ended up writing significantly less code without compromising on the extent. In fact, adding a few corner cases was almost a no-brainer. In this post I’d like to share my…

Similar Posts