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Apprendre Challenge: Selecting Random Products Within a Category | Terminal Operations in the Stream API
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Challenge: Selecting Random Products Within a Category

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Imagine you have a list of products from an online store. Your goal is to group them by category, pick a random product from each group, and display the result.

  1. Group the list of products by category using groupingBy().
  2. For each category (productList), get the list of products using the stream() method and select a random product with findAny().
  3. Check if the Optional contains a value using ifPresent().
  4. If Optional has a value, print the information in the following format: "Category: {category} => {product}".

Solution

solution.java

solution.java

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Section 3. Chapitre 11
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book
Challenge: Selecting Random Products Within a Category

Tâche

Swipe to start coding

Imagine you have a list of products from an online store. Your goal is to group them by category, pick a random product from each group, and display the result.

  1. Group the list of products by category using groupingBy().
  2. For each category (productList), get the list of products using the stream() method and select a random product with findAny().
  3. Check if the Optional contains a value using ifPresent().
  4. If Optional has a value, print the information in the following format: "Category: {category} => {product}".

Solution

solution.java

solution.java

Switch to desktopPassez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessous
Tout était clair ?

Comment pouvons-nous l'améliorer ?

Merci pour vos commentaires !

close

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Completion rate improved to 2.33

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