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CodeGym /Courses /Java Collections /Tasks | Level 6 | Lesson 10

Tasks | Level 6 | Lesson 10

Java Collections
Level 6, Lesson 10
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16
Task
Java Collections, level 6, lesson 10
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Mastering ClassLoader and Reflection
Mastering ClassLoader and Reflection
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Java webinar
9
Task
Java Collections, level 6, lesson 10
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Find the class by its description
Find the class by its description
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32
Task
Java Collections, level 6, lesson 10
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MyMultiMap
MyMultiMap
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9
Task
Java Collections, level 6, lesson 10
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Why doesn't the set contain an element?
Why doesn't the set contain an element?
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9
Task
Java Collections, level 6, lesson 10
Locked
Find the class by its description
Find the class by its description
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Comments (5)
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Justin Smith Level 41, Greenfield, USA, United States
20 December 2022
IMO, MyMultiMap is much easier than the ClassLoader task, even though it's rated Hard and ClassLoader is rated Medium.
Senned Level 41, Azov, Russia
20 December 2019
For ClassLoader task use task3507 from last level. And parameter key in method getHiddenClassObjectByKey need cast toLowerCase too!
Marcin Olech Level 41, Kraków, Poland
16 January 2020
Have you done 4th? (MyMultiMap) Got some problems:(
Senned Level 41, Azov, Russia
17 January 2020
Yes, u can messaging me
Justin Smith Level 41, Greenfield, USA, United States
15 December 2022
One other thing that really messed me up for a while and I just figured out now... the packageName string is going to contain "%20" escape sequence characters for wherever there are spaces in folder names (such as "Intellij IDEA Community Edition"). Unfortunately these escape sequences don't work in reverse when you try to create a file object from the packageName. You have to replace all of them with spaces.