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How to Convert List to Map in Java 8

Core Java » on Oct 26, 2016 { 5 Comments } By Sivateja

If you have a scenario where you need to convert List of objects to a Map, prior to java 8 you can do this by writing a simple for loop which is iterative. But in this article I will show you how to convert List to Map using java 8 lambda expression.

Java 8 Convert List to Map Example

Lets a take pojo class named Account with properties accNo, accType, accStatus.

Account.java

ListtoMap.java

Output

Before Java 8 {100=Open, 101=Closed}
Java 8  {100=Open, 101=Closed}

Hey its same output ;) I just tried to show both ways [ with and without lambda expression ].

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Comments

5 Responses to “How to Convert List to Map in Java 8”
  1. Animesh says:

    gr8 bro

  2. Nikhil says:

    nice updates in java8 please give me more details about this new features of java 8

  3. Venkatesh says:

    How to work internally hashmap?

  4. This is really very nice and useful example.
    thanks

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