2023-04-02 01:18:30
1. float f=3.4; Is it correct? 2. What is object-oriented thinking? 3. short s1 = 1; s1 = s1 + 1; Is there a mistake? short s1 = 1; s1 += 1; Is there a mistake? 4. The underlying comparison p...
2023-04-02 01:21:54
What is a JVM? What does it do? What are the root nodes in the reachability analysis algorithm? What is GC? Why should there be GC? How do I tune GC? How to troubleshoot high CPU and memo...
2023-04-02 01:24:10
Why use message queues? What are the advantages and disadvantages of using message queues? What are the differences among kafka, activemq, rabbitmq, and rocketmq? How do you ensure the hi...
2023-04-02 01:28:43
What kind of locks does java have? Have you used reentrantlock? The difference between reentrantlock and syncmchronized Why use a lock? Use a mutex to implement a read-write lock, with prior...