Introduction
This document gives an overview of the definition of 100% Pure
Java and the tool which tests Java programs and applets for
purity, JavaPureCheck.
The Java Pure Check program scans the class files of
your Java program, informing you of possible portability
problems in your program.
Portability problems are classified into three severity
levels:
- Pure
- No portability problem; pure Java.
- Warning
- Warning of a likely portability problem. A warning must be
accompanied by an explanation in
order to meet the certification criteria for 100% Pure
Java.
- Error
- An unequivocal portability problem. The only acceptable explanation for an error is a
reference to a variance granted by JavaSoft.
There are several sources of portability problems, with
various degrees of severity.
- Undefined references
- An incomplete program cannot, obviously, be completely
checked. It will be reported as an error, as that is the most conservative
estimate of what might be in the missing class files.
- Method references
- Class files are examined to find out which methods they
refer to. Some references might have warnings or errors
attached.
- Hard-coded path
- Java Pure Check checks the
String constants in
your program, looking for any that resemble hard-coded file
path names.
- This is a warning. The required
explanation is a description of how
String is
used; for example, `URL'.
- Injects to system
- A portable program may not insert classes into the Java core
library (packages whose names start with
java.).
This is an error.
- Native method
- Pure Java programs may not define or depend on native (that
is, platform-specific) code. This is an error.
An explanation must be given for all warnings and errors
generated by Java Pure Check.
For an error, the only acceptable explanation is a variance
granted by JavaSoft. The variance should be cited by case
number, as provided by JavaSoft; the case number will be used to
look up the variance in the variance list furnished by
JavaSoft.
- sun.security.pkcs : all classes and methods in this package
- "Undocumented internal package"
- void java.lang.System.load(java.lang.String)
- "Not portable"
- void java.lang.System.loadLibrary(java.lang.String)
- "Not portable"
- java.awt.LightweightPeer : all methods in this class
- "Undocumented internal interface"
- sun.tools.native2ascii : all classes and methods in this package
- "Undocumented internal package"
- sun.rmi.registry : all classes and methods in this package
- "Undocumented internal package"
- sun.awt.image : all classes and methods in this package
- "Undocumented internal package"
- sun.jdbc.odbc : all classes and methods in this package
- "Undocumented internal package"
- sun.rmi.transport.proxy : all classes and methods in this package
- "Undocumented internal package"
- sun.rmi.rmic : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.http : all classes and methods in this package
- "Undocumented internal package"
- sun.audio : all classes and methods in this package
- "Undocumented internal package"
- sun.tools.asm : all classes and methods in this package
- "Undocumented internal package"
- sun.rmi.server : all classes and methods in this package
- "Undocumented internal package"
- sun.tools.serialver : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.httpd : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.protocol.verbatim : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.protocol.http : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.protocol.systemresource : all classes and methods in this package
- "Undocumented internal package"
- sun.io : all classes and methods in this package
- "Undocumented internal package"
- sun.awt.tiny : all classes and methods in this package
- "Undocumented internal package"
- sun.applet.resources : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.protocol.gopher : all classes and methods in this package
- "Undocumented internal package"
- sun.tools.tree : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.protocol.ftp : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.protocol.doc : all classes and methods in this package
- "Undocumented internal package"
- sun.tools.ttydebug : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.protocol.file : all classes and methods in this package
- "Undocumented internal package"
- sun.security.util : all classes and methods in this package
- "Undocumented internal package"
- sun.rmi.transport.tcp : all classes and methods in this package
- "Undocumented internal package"
- java.lang.Process java.lang.Runtime.exec(java.lang.String[], java.lang.String[])
- "Not portable"
- void java.lang.Runtime.loadLibrary(java.lang.String)
- "Not portable"
- java.lang.Process java.lang.Runtime.exec(java.lang.String)
- "Not portable"
- java.lang.Process java.lang.Runtime.exec(java.lang.String[])
- "Not portable"
- void java.lang.Runtime.load(java.lang.String)
- "Not portable"
- java.lang.Process java.lang.Runtime.exec(java.lang.String, java.lang.String[])
- "Not portable"
- sun.awt.motif : all classes and methods in this package
- "Undocumented internal package"
- sun.security.provider : all classes and methods in this package
- "Undocumented internal package"
- sun.awt : all classes and methods in this package
- "Undocumented internal package"
- java.lang.UNIXProcess : all methods in this class
- "Undocumented internal interface"
- sun.net.www : all classes and methods in this package
- "Undocumented internal package"
- sun.misc : all classes and methods in this package
- "Undocumented internal package"
- sun.security.x509 : all classes and methods in this package
- "Undocumented internal package"
- sun.tools.javap : all classes and methods in this package
- "Undocumented internal package"
- sunw.io : all classes and methods in this package
- "Undocumented internal package"
- sun.tools.javac : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.content.image : all classes and methods in this package
- "Undocumented internal package"
- sun.tools.util : all classes and methods in this package
- "Undocumented internal package"
- sun.tools.jar : all classes and methods in this package
- "Undocumented internal package"
- sun.net.nntp : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.protocol.appletresource : all classes and methods in this package
- "Undocumented internal package"
- java.awt.peer : all classes and methods in this package
- "Should only be used when implementing AWT"
- sun.net.www.content.text : all classes and methods in this package
- "Undocumented internal package"
- java.lang.ProcessInputStream : all methods in this class
- "Undocumented internal interface"
- sun.tools.javadoc : all classes and methods in this package
- "Undocumented internal package"
- sun.tools.java : all classes and methods in this package
- "Undocumented internal package"
- sun.net.smtp : all classes and methods in this package
- "Undocumented internal package"
- sun.net.ftp : all classes and methods in this package
- "Undocumented internal package"
- sun.beans.infos : all classes and methods in this package
- "Undocumented internal package"
- sun.security.acl : all classes and methods in this package
- "Undocumented internal package"
- sun.rmi.transport : all classes and methods in this package
- "Undocumented internal package"
- sun.beans.editors : all classes and methods in this package
- "Undocumented internal package"
- sun.net : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.protocol.netdoc : all classes and methods in this package
- "Undocumented internal package"
- sun.net.www.protocol.mailto : all classes and methods in this package
- "Undocumented internal package"
- sun.applet : all classes and methods in this package
- "Undocumented internal package"
- java.lang.String java.lang.System.getenv(java.lang.String)
- "Not meaningful on all platforms"
- java.lang.Class java.lang.Class.forName(java.lang.String)
- "May load impure class"
- java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String, byte[], int, int)
- "May define impure class"
- java.lang.Class java.lang.ClassLoader.defineClass(byte[], int, int)
- "May define impure class"
- java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String)
- "May define impure class"
- sun.security.pkcs
- method reference:error "Undocumented internal package"
- void java.lang.System.load(java.lang.String)
- method reference:error "Not portable"
- void java.lang.System.loadLibrary(java.lang.String)
- method reference:error "Not portable"
- java.lang.String java.lang.System.getenv(java.lang.String)
- method reference:warning "Not meaningful on all platforms"
- java.awt.LightweightPeer
- method reference:error "Undocumented internal interface"
- sun.tools.native2ascii
- method reference:error "Undocumented internal package"
- sun.rmi.registry
- method reference:error "Undocumented internal package"
- sun.awt.image
- method reference:error "Undocumented internal package"
- sun.jdbc.odbc
- method reference:error "Undocumented internal package"
- sun.rmi.transport.proxy
- method reference:error "Undocumented internal package"
- sun.rmi.rmic
- method reference:error "Undocumented internal package"
- sun.net.www.http
- method reference:error "Undocumented internal package"
- sun.audio
- method reference:error "Undocumented internal package"
- sun.tools.asm
- method reference:error "Undocumented internal package"
- sun.rmi.server
- method reference:error "Undocumented internal package"
- java.lang.Class java.lang.Class.forName(java.lang.String)
- method reference:warning "May load impure class"
- sun.tools.serialver
- method reference:error "Undocumented internal package"
- sun.net.www.httpd
- method reference:error "Undocumented internal package"
- sun.net.www.protocol.verbatim
- method reference:error "Undocumented internal package"
- sun.net.www.protocol.http
- method reference:error "Undocumented internal package"
- sun.net.www.protocol.systemresource
- method reference:error "Undocumented internal package"
- sun.io
- method reference:error "Undocumented internal package"
- sun.awt.tiny
- method reference:error "Undocumented internal package"
- sun.applet.resources
- method reference:error "Undocumented internal package"
- sun.net.www.protocol.gopher
- method reference:error "Undocumented internal package"
- sun.tools.tree
- method reference:error "Undocumented internal package"
- sun.net.www.protocol.ftp
- method reference:error "Undocumented internal package"
- sun.net.www.protocol.doc
- method reference:error "Undocumented internal package"
- sun.tools.ttydebug
- method reference:error "Undocumented internal package"
- sun.net.www.protocol.file
- method reference:error "Undocumented internal package"
- sun.security.util
- method reference:error "Undocumented internal package"
- sun.rmi.transport.tcp
- method reference:error "Undocumented internal package"
- java.lang.Process java.lang.Runtime.exec(java.lang.String[], java.lang.String[])
- method reference:error "Not portable"
- void java.lang.Runtime.loadLibrary(java.lang.String)
- method reference:error "Not portable"
- java.lang.Process java.lang.Runtime.exec(java.lang.String)
- method reference:error "Not portable"
- java.lang.Process java.lang.Runtime.exec(java.lang.String[])
- method reference:error "Not portable"
- void java.lang.Runtime.load(java.lang.String)
- method reference:error "Not portable"
- java.lang.Process java.lang.Runtime.exec(java.lang.String, java.lang.String[])
- method reference:error "Not portable"
- sun.awt.motif
- method reference:error "Undocumented internal package"
- sun.security.provider
- method reference:error "Undocumented internal package"
- sun.awt
- method reference:error "Undocumented internal package"
- java.lang.UNIXProcess
- method reference:error "Undocumented internal interface"
- sun.net.www
- method reference:error "Undocumented internal package"
- sun.misc
- method reference:error "Undocumented internal package"
- sun.security.x509
- method reference:error "Undocumented internal package"
- sun.tools.javap
- method reference:error "Undocumented internal package"
- sunw.io
- method reference:error "Undocumented internal package"
- sun.tools.javac
- method reference:error "Undocumented internal package"
- sun.net.www.content.image
- method reference:error "Undocumented internal package"
- sun.tools.util
- method reference:error "Undocumented internal package"
- sun.tools.jar
- method reference:error "Undocumented internal package"
- sun.net.nntp
- method reference:error "Undocumented internal package"
- sun.net.www.protocol.appletresource
- method reference:error "Undocumented internal package"
- java.awt.peer
- method reference:error "Should only be used when implementing AWT"
- sun.net.www.content.text
- method reference:error "Undocumented internal package"
- java.lang.ProcessInputStream
- method reference:error "Undocumented internal interface"
- sun.tools.javadoc
- method reference:error "Undocumented internal package"
- sun.tools.java
- method reference:error "Undocumented internal package"
- sun.net.smtp
- method reference:error "Undocumented internal package"
- sun.net.ftp
- method reference:error "Undocumented internal package"
- sun.beans.infos
- method reference:error "Undocumented internal package"
- sun.security.acl
- method reference:error "Undocumented internal package"
- sun.rmi.transport
- method reference:error "Undocumented internal package"
- sun.beans.editors
- method reference:error "Undocumented internal package"
- sun.net
- method reference:error "Undocumented internal package"
- sun.net.www.protocol.netdoc
- method reference:error "Undocumented internal package"
- java.lang.Class java.lang.ClassLoader.defineClass(java.lang.String, byte[], int, int)
- method reference:warning "May define impure class"
- java.lang.Class java.lang.ClassLoader.defineClass(byte[], int, int)
- method reference:warning "May define impure class"
- java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String)
- method reference:warning "May define impure class"
- sun.net.www.protocol.mailto
- method reference:error "Undocumented internal package"
- sun.applet
- method reference:error "Undocumented internal package"