IBS Software Services Java Developer Interview Questions and Answers

Q1. Spring IOC containers explain
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Spring IOC containers are responsible for managing the instantiation of objects and their dependencies in a Spring application.
• IOC stands for Inversion of Control, which means that the control of object creation is inverted from the application code to the Spring framework.

• There are two main types of Spring IOC containers: BeanFactory and ApplicationContext.

• BeanFactory is the simplest container, providing basic support...read more
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Q2. Metaspace in java
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Metaspace is a part of the Java HotSpot VM memory where class metadata is stored.
• Metaspace replaces the permanent generation (PermGen) in Java 8 and later versions.

• It is used to store class metadata such as class names, method names, field names, annotations, etc.

• Metaspace is dynamically resized by the JVM based on the application's demand.

• You can monitor Metaspace usage using tools like JConsole or VisualVM.
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Q3. Difference between prdicate & consumer?
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Java 8 stream based question

Find min ,max and second largest (avoid duplicates)using streams

Q1. Multiple inheritance , encapsulation, Collections-Hashmap,Set,list etc with coding questions, substrings,
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Q2. Checked and unchecked expections with example
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Q3. Spring boot annotations
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Q4. Java 8 features,stream api,lambda with coding
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Q1. Java collections and Spring Boot
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Q2. SQL based questions
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I will have a coding test with a paper and pen that includes various questions on merging, arrays, and collections. Following that, there will be a technical interview focused on data structures and algorithms. I find the process to be quite lengthy, and I haven't been able to succeed.