Planful Interview EXperience | Screening round for experienced Last Updated : 22 May, 2020 Improve Improve Like Article Like Save Share Report Round 1: What is JVM? What does it do? What is JIT? Why String is immutable? Heap and Stack memory differences? Difference between + operator and StringBuilder.append() function Write perfect singleton? Which data structure do you choose for storing seats in theater? Advantages and disadvantages of Java Garbage Collection? Git blame, annotate, fetch, pull, broken commit? What are the different types of indexes in the database? Like Article Suggest improvement Previous Expedia Online Test for SDE-2 Next Medlife Interview Experience | Java Developer 4.5 Years Share your thoughts in the comments Add Your Comment Please Login to comment...