1st round: .Brief introduction about myself .Which technologies I have worked on .have you worked on struts .Do you have experience on hibernate .Have you worked on NoSql .What is the URL or configuration parameter of the MongoDB you're connecting to (basically he was interested to know if I am aware how the connectionString of mongoDB look like) .How the configuration to connect to Mongo is handled in your application, give some parameter names .How to know if no consumer is consuming in Kafka .which tool or commands are you using to check kafka related things .What is microservices .write a microservice to provide CatalogService, OrderService and BillingService .Explain the code you wrote for above question As I had used Java8 to write the code I was asked questions related to it .New features in Java8 .what is stream .give your view about Diamond problem with java8 .have u worked with collections .internal working of hashmap .hashMap key related requirements .write a custom class to be used as hashmap key .singleton pattern
Java Lead Interview Questions
595 java lead interview questions shared by candidates
java oops,
Abstraction encapsulation overriding exception handling collections
Design patters and system design
Spring and spring boot queations
All fundamental, architectural based, design based questions.
Questions were based on problem solving, puzzles, core java and the work I did previously.
General questions about my experience and the tools I have used..
Technical questions: How would you approach this integration into the Point of Sale system? Management questions: How would you handle such and such scenario?
Coding : Reverse a String.String is having special characters,while reversing the position of special character should not be changed.Only Alphabets needs be be reversed ABC$CDE#XYZ => ZYX$EDC#CBA
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