3日前 -Explain the Singleton pattern and show how to implement a thread-safe singleton in Java. Then explain how you would ensure thread safety for operations on the ...
... pattern (lazy + thread-safe, no locks) ✓ Fix 3: Enum singleton (recommended by Effective Java) ✓ Why Spring beans are singletons by default ✓ When NOT to ...
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1日前 -The practical rule: stay with singleton unless you have an explicit, concrete reason not to. Request-scoped beans are the one exception that shows up regularly ...
5日前 -If you need a class, use the static holder idiom (lazy + thread-safe without synchronization) or a double-checked-locking volatile field. Avoid naive lazy init ...
4日前 -Q4. How would you implement a thread-safe Singleton in Java? Describe how to implement a Singleton in Java while ensuring that multiple threads cannot create ...
1日前 -Double-Checked Locking in Singleton. You are implementing a thread-safe Singleton using double-checked locking. What is double-checked locking? Why is the ...
2日前 -When a subclass overrides an instance method, this refers to the subclass object, enabling powerful code reuse. Static variables are shared, Thread Safety, In ...
2日前 -Sinks are singletons, so ensure the implementation is thread-safe and inject only singleton-safe dependencies. Add a usageSink callback to the plugin's ...
3日前 -⚠️ Singleton does NOT guarantee thread safety. 2️⃣ Prototype Scope @Component @Scope("prototype") class ReportGenerator { } ✓ New ...
4日前 -Each request to the server utilises a separate thread, with each thread having access to the Tiles singleton. ... thread-safe constructs. The ...