Oracle Software Developer Interview Questions, Process, and Tips

Questions on Linkedlist and java 8 questions

Aptitude +coding +computer fundamentals

Focussed on easy to medium dsa questions

Q1. How do you create thread locks
Ans. 
Thread locks are created using synchronization mechanisms to prevent multiple threads from accessing shared resources simultaneously.
• Use synchronized keyword in Java to create a synchronized block or method

• Use locks from java.util.concurrent.locks package like ReentrantLock

• Use synchronized collections like ConcurrentHashMap to handle thread safety

• Implement thread-safe data structures like BlockingQueue for producer-con
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Q2. Trapping rain water problem
Ans. 
Trapping rain water problem involves calculating the amount of water that can be trapped between buildings given their heights.
• Calculate the maximum height of buildings to the left and right of each building

• Find the minimum of the two heights

• Subtract the height of the current building to get the amount of water that can be trapped at that building
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Questions were based on medium level array , hashmap

Coding round consist of two section consisting of aptitude and two question on coding.

Q1. One puzzle and one simple array question
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