In this section we're going to explain some platform-specific concepts for Java

The import directive for Java

To indicate that you want to use Java platform, you must include the following import directive in one of the source files with which you proposes to work:

import "java.lang.*", "platform=Java", "ns=Java";

LayerD needs the Java SDK installed in your PC to work properly with Java platform. It must be registered in your SO path.

Another parameter in the import directive:

"packagePath=C:\\MiPath\\here" for indicating the location of a specific jar file which contains classes that want to be imported.

In Java ME platform some JAR files doesn't work properly yet.

Compiling to Java platform

By default, Zoe compiler compiles to .NET platform. If your target platform is Java you need to indicate to Zoe compiler using the "-p:Java" option. Example:

c:\layerd\bin>zoec.exe SampleJava.zoe –p:java

Inheritance

All inherited methods are, by default, non-virtual in LayerD unless you define it as "virtual" (with "virtual" modifier). Nevertheless, for platforms like Java where methods are by default virtual, a warning will be shown for point out that the method is going to be "virtual" anyway. In this case if what you want is a non-virtual method, you should use non-virtual modifier so that the method won't be virtual.