Infosys • Java
Java Question Bank
2 questions. Click any row to open detailed answer and explanation.
Explain the concept of multithreading in Java
What is multithreading in Java? Explain thread lifecycle and synchronization.
What is the difference between ArrayList and LinkedList?
Compare ArrayList and LinkedList in Java. When would you use each? Explain the internal implementation, time complexity, memory usage, an...
Java Interview Strategy for Infosys
Interviews in this topic usually test how clearly you can explain concepts, compare alternatives, and apply decisions to real systems. Treat each question as a mini case study instead of a one-line definition.
A practical structure that works well is: define the concept, explain when to use it, share one concrete example, and then mention one common mistake or limitation. This helps your answer feel complete and interview-ready.
Use this question list as a revision loop. Solve all questions once, mark weak areas, and then repeat only the weak questions until you can explain them confidently without reading notes.