How to convert a Map to Set in Java
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💡 Java Interview / Coding Question: 👉 How do you convert a List into a Map using Java Stream API? Here’s the clean & commonly used solution 👇 Map map = list.stream() .collect(Collectors.toMap( Employee::getId, Employee::getName )); 🎯 Explanation: - stream() → converts list into a stream - Collectors.toMap() → collects elements into a Map - First parameter → Key - Second parameter → Value ✔️ Clean & readable ✔️ Very common Java 8 interview question ✔️ Used in real-time applications 👉 Save th
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💡 Java Interview / Coding Question: 👉 How do you convert a List into a Map using Java Stream API? Here’s the clean & commonly used solution 👇 Map map = list.stream() .collect(Collectors.toMap( Employee::getId, Employee::getName )); 🎯 Explanation: - stream() → converts list into a stream - Collectors.toMap() → collects elements into a Map - First parameter → Key - Second parameter → Value ✔️ Clean & readable ✔️ Very common Java 8 interview question ✔️ Used in real-time applications 👉 Save th
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