Java 8 filter map example, by key and by value

Today, I show you about the Java 8 filter map example which filters a map by value and filters a map by key. Here we will use Stream filter() method to filter a Map by keys and values. The core jdk lacks the mechanics for filtering a map by Map.entry until Java 8. Let’s begin: … Read moreJava 8 filter map example, by key and by value

Java 8 List to Map duplicate keys

Today, I introduce you to Java 8 List to Map duplicate keys examples. Here, we will use Collectors.toMap() method to convert a List of an object into a Map. One more thing, If List has duplicates but Map doesn’t allow duplicate keys. When you are converting List to Map and what will happen? Let’s discovery … Read moreJava 8 List to Map duplicate keys

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