Virtual packages are created: java1-runtime and java2-runtime.
Packages written in Java are separated in two categories: programs and libraries. Programs are intended to be run by end-users. Libraries are intended to help programs to run and to be used by developers.
Both must be shipped as Java bytecode (*.class
files, packaged in a *.jar archive) and with
an "Architecture: all". There are rare exceptions to this such as Eclipse
SWT. Exceptions to this rule can only be granted by the Java Team.
Requests must be sent to
The Java bytecode may additionally be shipped as machine code, as produced for example by the GNU Compiler for Java, in a separate architecture-specific package.
Programs and libraries should enable JUnit tests, if these are present. The build may ignore test failures.
Java virtual machines must depend on java-common. They can also provide the runtime environment that the package contains (java1-runtime and/or java2-runtime). If it does not provide the files itself it must depend on the needed runtime environment.
Packages that contain a runtime conforming to the Java 1.1 specification should provide java1-runtime. Packages that contain a runtime conforming to the Java 2 specification should provide java2-runtime. If a package conforms to both, then it should provide both; however, packages that do not implement the methods from Java 1.1 that have been deprecated in Java 2 must not provide java1-runtime.
They should use /etc/alternatives for the name 'java' if they are command-line compatible with the Sun's java program.
They should have a CLASSPATH predefined which include the needed runtime environment.
If a given source (like the JDK does) brings both a compiler and a virtual machine, you may name the compiler package xxxx-dev.
Some Java classes implement their routines using a "native" language (such as C). This native code is compiled and stored in dynamic libraries (such as JNI modules) that are loaded at runtime. If a virtual machine supports native code, it must include the directory /usr/lib/jni in its search path for these dynamic libraries.