jep

Class ClassList

java.lang.Object

jep.ClassList

All Implemented Interfaces:

ClassEnquirer

public class ClassList
extends java.lang.Object
implements ClassEnquirer

A singleton that searches for loaded classes from the JRE and the Java classpath. This is the default ClassEnquirer that is used if no ClassEnquirer is specified when constructing an Interpreter. ClassList is also used by the command line jep script.

Field Summary

Fields inherited from interface jep.ClassEnquirer

RESTRICTED_PKG_NAMES

Method Summary

Modifier and Type	Method and Description
java.lang.String[]	getClassNames(java.lang.String pkg) get classnames in package
static ClassList	getInstance() get ClassList instance
java.lang.String[]	getSubPackages(java.lang.String p) Given a Java package name, gets the sub-packages available.
boolean	isJavaPackage(java.lang.String s) Checks if the String is known to the ClassList as an available package
static void	main(java.lang.String[] argv) for testing only

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getClassNames

public java.lang.String[] getClassNames(java.lang.String pkg)

get classnames in package

Specified by:

getClassNames in interface ClassEnquirer

Parameters:

pkg - a String value

Returns:

String[] array of class names

getSubPackages

public java.lang.String[] getSubPackages(java.lang.String p)

Description copied from interface: ClassEnquirer

Given a Java package name, gets the sub-packages available. For example, a sub-package of package "java" is "util", and a sub-package of package "java.util" is "concurrent". This method is primarily used for introspection using Python's dir() method. This method can return null if dir() support is not necessary.

Specified by:

getSubPackages in interface ClassEnquirer

Parameters:

p - the name of a package the ClassEnquirer supports, such as java.util

Returns:

the list of sub-packages in the package, or null

isJavaPackage

public boolean isJavaPackage(java.lang.String s)

Checks if the String is known to the ClassList as an available package

Specified by:

isJavaPackage in interface ClassEnquirer

Parameters:

s - a String to check

Returns:

if the String is considered a Java package

getInstance

public static ClassList getInstance()
                             throws JepException

get ClassList instance

Returns:

ClassList instance

Throws:

JepException - if an error occurs

main

public static void main(java.lang.String[] argv)
                 throws java.lang.Throwable

for testing only

Parameters:

argv - command line arguments

Throws:

java.lang.Throwable - if an error occurs