Setting up CLASSPATH and ant in Ubuntu
- by Dzung Nguyen
I just started to learn Java using Thinking in Java book, and have some troubles using ant.
I'm using Ubuntu 12.04, and have openjdk 7 java installed. I also setup the CLASSPATH to be the code folder
When I run ant in code folder, this is the output:
Exception in thread "main" java.lang.RuntimeException: JDK 1.4.1 or higher is required to run the examples in this book.
[CheckVersion] at com.bruceeckel.tools.CheckVersion.main(Unknown Source)
However when I run java -version, this is the output:
java version "1.6.0_27"
OpenJDK Runtime Environment (IcedTea6 1.12.5) (6b27-1.12.5-0ubuntu0.12.04.1)
OpenJDK 64-Bit Server VM (build 20.0-b12, mixed mode)
How to setup ant and classpath correctly?