Java classes/interfaces name collisions

collision.py

#!/usr/bin/env python

# curl https://docs.oracle.com/en/java/javase/11/docs/api/allclasses.html | ./collision.py
# curl https://docs.oracle.com/javase/8/docs/api/allclasses-frame.html | ./collision.py

import sys, re, collections


def readall(fh):
    data = ''
    while True:
        chunk = fh.read()
        if len(chunk) == 0:
            return data
        data += chunk

def main():
    # <li><a href="javax/swing/AbstractAction.html" title="class in javax.swing" target="classFrame">AbstractAction</a></li>
    # <li><a href="java.desktop/java/awt/desktop/AboutEvent.html" title="class in java.awt.desktop">AboutEvent</a></li>
    good_base = set(['java', 'javax'])
    html = readall(sys.stdin)
    classes = collections.defaultdict(list)
    for m in re.finditer(r'<li><a href="([^"]+)"([^>]*)>', html):
        url = m.group(1)
        # Remove extension and split
        parts = url[:-5].split('/')
        if parts[0].find('.') != -1:
            # Strip module info if any (e.g., "java.desktop")
            parts = parts[1:]
        if parts[0] not in good_base:
            # Ignore non java/javax base
            continue

        name = parts[-1]
        path = '.'.join(parts)

        classes[name].append(path)

    count = 0
    for name in sorted(classes.iterkeys()):
        paths = classes[name]
        if len(paths) < 2:
            continue

        print('%s: %s' % (name, paths))
        count += 1

    print('Found %d collisions' % (count,))


main()

JDK11 collisions

AclEntry: ['java.nio.file.attribute.AclEntry', 'java.security.acl.AclEntry']
AlreadyBoundException: ['java.nio.channels.AlreadyBoundException', 'java.rmi.AlreadyBoundException']
Annotation: ['java.lang.annotation.Annotation', 'java.text.Annotation']
Array: ['java.lang.reflect.Array', 'java.sql.Array']
ArrayType: ['javax.lang.model.type.ArrayType', 'javax.management.openmbean.ArrayType']
Attribute: ['javax.management.Attribute', 'javax.naming.directory.Attribute', 'javax.print.attribute.Attribute', 'javax.xml.stream.events.Attribute']
AttributeList: ['javax.management.AttributeList', 'javax.swing.text.html.parser.AttributeList']
AttributeSet: ['javax.print.attribute.AttributeSet', 'javax.swing.text.AttributeSet']
Attributes: ['java.util.jar.Attributes', 'javax.naming.directory.Attributes']
AuthenticationException: ['javax.naming.AuthenticationException', 'javax.security.sasl.AuthenticationException']
Certificate: ['java.security.cert.Certificate', 'java.security.Certificate', 'javax.security.cert.Certificate']
CertificateEncodingException: ['java.security.cert.CertificateEncodingException', 'javax.security.cert.CertificateEncodingException']
CertificateException: ['java.security.cert.CertificateException', 'javax.security.cert.CertificateException']
CertificateExpiredException: ['java.security.cert.CertificateExpiredException', 'javax.security.cert.CertificateExpiredException']
CertificateNotYetValidException: ['java.security.cert.CertificateNotYetValidException', 'javax.security.cert.CertificateNotYetValidException']
CertificateParsingException: ['java.security.cert.CertificateParsingException', 'javax.security.cert.CertificateParsingException']
Configuration: ['java.lang.module.Configuration', 'javax.security.auth.login.Configuration']
ConnectException: ['java.net.ConnectException', 'java.rmi.ConnectException']
Control: ['javax.naming.ldap.Control', 'javax.sound.sampled.Control']
DTD: ['javax.swing.text.html.parser.DTD', 'javax.xml.stream.events.DTD']
Date: ['java.sql.Date', 'java.util.Date']
DefaultLoaderRepository: ['javax.management.DefaultLoaderRepository', 'javax.management.loading.DefaultLoaderRepository']
Duration: ['java.time.Duration', 'javax.xml.datatype.Duration']
Element: ['javax.lang.model.element.Element', 'javax.swing.text.Element', 'javax.swing.text.html.parser.Element']
FactoryConfigurationError: ['javax.xml.parsers.FactoryConfigurationError', 'javax.xml.stream.FactoryConfigurationError']
FileFilter: ['java.io.FileFilter', 'javax.swing.filechooser.FileFilter']
Formatter: ['java.util.Formatter', 'java.util.logging.Formatter']
IntrospectionException: ['java.beans.IntrospectionException', 'javax.management.IntrospectionException']
InvalidAttributeValueException: ['javax.management.InvalidAttributeValueException', 'javax.naming.directory.InvalidAttributeValueException']
InvalidKeyException: ['java.security.InvalidKeyException', 'javax.management.openmbean.InvalidKeyException']
List: ['java.awt.List', 'java.util.List']
Manifest: ['java.util.jar.Manifest', 'javax.xml.crypto.dsig.Manifest']
MarshalException: ['java.rmi.MarshalException', 'javax.xml.crypto.MarshalException']
Modifier: ['java.lang.reflect.Modifier', 'javax.lang.model.element.Modifier']
Name: ['javax.lang.model.element.Name', 'javax.naming.Name']
OpenType: ['java.awt.font.OpenType', 'javax.management.openmbean.OpenType']
ParagraphView: ['javax.swing.text.html.ParagraphView', 'javax.swing.text.ParagraphView']
Permission: ['java.security.acl.Permission', 'java.security.Permission']
Predicate: ['java.util.function.Predicate', 'javax.sql.rowset.Predicate']
Proxy: ['java.lang.reflect.Proxy', 'java.net.Proxy']
Reference: ['java.lang.ref.Reference', 'javax.naming.Reference', 'javax.xml.crypto.dsig.Reference']
Statement: ['java.beans.Statement', 'java.sql.Statement']
Timer: ['java.util.Timer', 'javax.management.timer.Timer', 'javax.swing.Timer']
Timestamp: ['java.security.Timestamp', 'java.sql.Timestamp']
ToolProvider: ['java.util.spi.ToolProvider', 'javax.tools.ToolProvider']
TypeVariable: ['java.lang.reflect.TypeVariable', 'javax.lang.model.type.TypeVariable']
Types: ['java.sql.Types', 'javax.lang.model.util.Types']
UnknownHostException: ['java.net.UnknownHostException', 'java.rmi.UnknownHostException']
WildcardType: ['java.lang.reflect.WildcardType', 'javax.lang.model.type.WildcardType']
X509Certificate: ['java.security.cert.X509Certificate', 'javax.security.cert.X509Certificate']
Found 50 collisions

JDK8 collisions

AclEntry: ['java.nio.file.attribute.AclEntry', 'java.security.acl.AclEntry']
Action: ['javax.swing.Action', 'javax.xml.ws.Action']
AlreadyBoundException: ['java.nio.channels.AlreadyBoundException', 'java.rmi.AlreadyBoundException']
Annotation: ['java.lang.annotation.Annotation', 'java.text.Annotation']
Array: ['java.lang.reflect.Array', 'java.sql.Array']
ArrayType: ['javax.lang.model.type.ArrayType', 'javax.management.openmbean.ArrayType']
Attribute: ['javax.management.Attribute', 'javax.naming.directory.Attribute', 'javax.print.attribute.Attribute', 'javax.xml.stream.events.Attribute']
AttributeList: ['javax.management.AttributeList', 'javax.swing.text.html.parser.AttributeList']
AttributeSet: ['javax.print.attribute.AttributeSet', 'javax.swing.text.AttributeSet']
Attributes: ['java.util.jar.Attributes', 'javax.naming.directory.Attributes']
AuthenticationException: ['javax.naming.AuthenticationException', 'javax.security.sasl.AuthenticationException']
Binding: ['javax.naming.Binding', 'javax.xml.ws.Binding']
Certificate: ['java.security.cert.Certificate', 'java.security.Certificate', 'javax.security.cert.Certificate']
CertificateEncodingException: ['java.security.cert.CertificateEncodingException', 'javax.security.cert.CertificateEncodingException']
CertificateException: ['java.security.cert.CertificateException', 'javax.security.cert.CertificateException']
CertificateExpiredException: ['java.security.cert.CertificateExpiredException', 'javax.security.cert.CertificateExpiredException']
CertificateNotYetValidException: ['java.security.cert.CertificateNotYetValidException', 'javax.security.cert.CertificateNotYetValidException']
CertificateParsingException: ['java.security.cert.CertificateParsingException', 'javax.security.cert.CertificateParsingException']
ConnectException: ['java.net.ConnectException', 'java.rmi.ConnectException']
Control: ['javax.naming.ldap.Control', 'javax.sound.sampled.Control']
DTD: ['javax.swing.text.html.parser.DTD', 'javax.xml.stream.events.DTD']
DataSource: ['javax.activation.DataSource', 'javax.sql.DataSource']
Date: ['java.sql.Date', 'java.util.Date']
DefaultLoaderRepository: ['javax.management.DefaultLoaderRepository', 'javax.management.loading.DefaultLoaderRepository']
Duration: ['java.time.Duration', 'javax.xml.datatype.Duration']
Element: ['javax.lang.model.element.Element', 'javax.swing.text.Element', 'javax.swing.text.html.parser.Element', 'javax.xml.bind.Element']
FactoryConfigurationError: ['javax.xml.parsers.FactoryConfigurationError', 'javax.xml.stream.FactoryConfigurationError']
FileFilter: ['java.io.FileFilter', 'javax.swing.filechooser.FileFilter']
Formatter: ['java.util.Formatter', 'java.util.logging.Formatter']
Handler: ['java.util.logging.Handler', 'javax.xml.ws.handler.Handler']
IntrospectionException: ['java.beans.IntrospectionException', 'javax.management.IntrospectionException']
InvalidAttributeValueException: ['javax.management.InvalidAttributeValueException', 'javax.naming.directory.InvalidAttributeValueException']
InvalidKeyException: ['java.security.InvalidKeyException', 'javax.management.openmbean.InvalidKeyException']
List: ['java.awt.List', 'java.util.List']
Manifest: ['java.util.jar.Manifest', 'javax.xml.crypto.dsig.Manifest']
MarshalException: ['java.rmi.MarshalException', 'javax.xml.bind.MarshalException', 'javax.xml.crypto.MarshalException']
MimeTypeParseException: ['java.awt.datatransfer.MimeTypeParseException', 'javax.activation.MimeTypeParseException']
Modifier: ['java.lang.reflect.Modifier', 'javax.lang.model.element.Modifier']
Name: ['javax.lang.model.element.Name', 'javax.naming.Name', 'javax.xml.soap.Name']
OpenType: ['java.awt.font.OpenType', 'javax.management.openmbean.OpenType']
ParagraphView: ['javax.swing.text.html.ParagraphView', 'javax.swing.text.ParagraphView']
Permission: ['java.security.acl.Permission', 'java.security.Permission']
Policy: ['java.security.Policy', 'javax.security.auth.Policy']
Predicate: ['java.util.function.Predicate', 'javax.sql.rowset.Predicate']
ProtocolException: ['java.net.ProtocolException', 'javax.xml.ws.ProtocolException']
Provider: ['java.security.Provider', 'javax.xml.ws.Provider', 'javax.xml.ws.spi.Provider']
Proxy: ['java.lang.reflect.Proxy', 'java.net.Proxy']
Reference: ['java.lang.ref.Reference', 'javax.naming.Reference', 'javax.xml.crypto.dsig.Reference']
SOAPBinding: ['javax.jws.soap.SOAPBinding', 'javax.xml.ws.soap.SOAPBinding']
Statement: ['java.beans.Statement', 'java.sql.Statement']
Timer: ['java.util.Timer', 'javax.management.timer.Timer', 'javax.swing.Timer']
Timestamp: ['java.security.Timestamp', 'java.sql.Timestamp']
TypeVariable: ['java.lang.reflect.TypeVariable', 'javax.lang.model.type.TypeVariable']
Types: ['java.sql.Types', 'javax.lang.model.util.Types']
UnknownHostException: ['java.net.UnknownHostException', 'java.rmi.UnknownHostException']
UnmarshalException: ['java.rmi.UnmarshalException', 'javax.xml.bind.UnmarshalException']
Validator: ['javax.xml.bind.Validator', 'javax.xml.validation.Validator']
WildcardType: ['java.lang.reflect.WildcardType', 'javax.lang.model.type.WildcardType']
X509Certificate: ['java.security.cert.X509Certificate', 'javax.security.cert.X509Certificate']
Found 59 collisions