Choosing the right Java collection

Interactive guide

(press space to begin)

What data do you have?

Key-value pairs Items

Do you use primitive types like int or long?

Yes No

Do you use primitive types like int or long?

Yes No

Use Fastutil collections like: Int2IntMap

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Do you have duplicate keys?

Yes No

Use Fastutil collections like IntArrayList

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What is more important fast contains / remove or the order of iteration?

Contains / remove Iteration in order

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

Are you in a concurrent environment? Is thread safety an issue?

Yes No

Do you need to query the key by the value?

Yes No

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

Are you in a concurrent environment? Is thread safety an issue?

Yes No

Iteration of sorted values or first in first out?

FIFO Sorted

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

Use Maps.synchronizedMultiMap(new ArrayListMultimap())

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Use Guava ArrayListMultimap

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Are you in a concurrent environment? Is thread safety an issue?

Yes No

Is the order of iteration important?

Yes No

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

Use ConcurrentHashMap<Key Boolean> as a set

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Use HashSet

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Do you need access by the element index?

Yes No

Are you in a concurrent environment? Is thread safety an issue?

Yes No

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

Use Maps.synchronizedBiMap(new HashBiMap())

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Use Guava HashBiMap

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First in first out or sorted by key?

FIFO Sorted

Are you in a concurrent environment? Is thread safety an issue?

Yes No

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

Are you in a concurrent environment? Is thread safety an issue?

Yes No

Are you in a concurrent environment? Is thread safety an issue?

Yes No

Use PriorityBlockingQueue

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Use PriorityQueue

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404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

Are you in a concurrent environment? Is thread safety an issue?

Yes No

Are you in a concurrent environment? Is thread safety an issue?

Yes No

Use ConcurrentHashMap

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Use HashMap

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404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

Use CopyOnWriteArrayList

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Use ArrayList

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Use ArrayBlockingQueue or check out JCTools library

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Use ArrayDeque

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404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

Collections.synchronizedMap(new LinkedHashMap())

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Use LinkedHashMap

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Use ConcurrentSkipListMap

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Use TreeMap

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404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

404

Well, this is embarrassing, you've found our placeholder slide.

Here, use this link to solve the problem: fixme!

Choosing the right Java collection Interactive guide by (press space to begin)

Choosing the right Java collection – Interactive guide

shelajev

Choosing the right Java collection – Interactive guide

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java-collections

Choosing the right Java collection

Interactive guide

What data do you have?

Do you use primitive types like int or long?

Do you use primitive types like int or long?

Use Fastutil collections like: Int2IntMap

Do you have duplicate keys?

Use Fastutil collections like IntArrayList

What is more important fast contains / remove or the order of iteration?

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

Are you in a concurrent environment? Is thread safety an issue?

Do you need to query the key by the value?

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

Are you in a concurrent environment? Is thread safety an issue?

Iteration of sorted values or first in first out?

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

Use Maps.synchronizedMultiMap(new ArrayListMultimap())

Use Guava ArrayListMultimap

Are you in a concurrent environment? Is thread safety an issue?

Is the order of iteration important?

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

Use ConcurrentHashMap<Key Boolean> as a set

Use HashSet

Do you need access by the element index?

Are you in a concurrent environment? Is thread safety an issue?

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

404

Well, this is embarrassing, you've found our placeholder slide.

Use Maps.synchronizedBiMap(new HashBiMap())

Use Guava HashBiMap

First in first out or sorted by key?

Are you in a concurrent environment? Is thread safety an issue?

404

Well, this is embarrassing, you've found our placeholder slide.

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