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 Jep instances. ClassList is also used by the command line jep script.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	contains(java.lang.String p) classname contained in package
java.lang.String[]	getClassNames(java.lang.String p) get classnames in package
static ClassList	getInstance() get ClassList instance
static void	main(java.lang.String[] argv) for testing only
boolean	supportsPackageImport() Whether or not this ClassEnquirer supports importing Java classes at the package level in addition to the class level.

Methods inherited from class java.lang.Object

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

Method Detail

getClassNames

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

get classnames in package

Specified by:

getClassNames in interface ClassEnquirer

Parameters:

p - a String value

Returns:

String[] array of class names

contains

public boolean contains(java.lang.String p)

classname contained in package

Specified by:

contains in interface ClassEnquirer

Parameters:

p - a String value

Returns:

String[] array of class names

supportsPackageImport

public boolean supportsPackageImport()

Description copied from interface: ClassEnquirer

Whether or not this ClassEnquirer supports importing Java classes at the package level in addition to the class level. For example, with the right ClassLoader Jep should always be able to successfully import Java classes with syntax such as:

 
 from java.util import ArrayList
 o = ArrayList()
 
 

However, only in some scenarios can the package be imported separately without the fully qualified name, such as:

 
 import java.util as ju
 dir(ju)
 o = ju.ArrayList()
 
 

This also roughly corresponds to whether or not dir(javaPackage) will return a list of available classes or only the classes that have been explicitly imported.

Specified by:

supportsPackageImport in interface ClassEnquirer

Returns:

true if this ClassEnquirer supports import of packages in addition to import of classes, false if it only supports importing classes.

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