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Junior Java Developer Interview Questions

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Basic debugging questions and some hard hashmap and lists questions. All online questions were multiple choice (well, that made it worse?). Some of the preliminary questions were very basic. There are 23 questions of be completed in 60 minutes.
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Junior Java Software Developer

Interviewed at Interactive Brokers

3.4★
Oct 13, 2015

Basic debugging questions and some hard hashmap and lists questions. All online questions were multiple choice (well, that made it worse?). Some of the preliminary questions were very basic. There are 23 questions of be completed in 60 minutes.

What are the main features of Java? • Expect to discuss platform independence (JVM), object-oriented nature, memory management (garbage collection), multithreading, and robustness. • What is the difference between JDK, JRE, and JVM? • JDK (Java Development Kit): Includes tools for developing Java applications. • JRE (Java Runtime Environment): Contains libraries and JVM to run Java applications. • JVM (Java Virtual Machine): Converts bytecode into machine code and executes it. • What are primitive data types in Java? • Byte, short, int, long, float, double, char, boolean. • Explain the final, finally, and finalize() keywords.
avatar

Junior Java Developer

Interviewed at Unisys

3.4★
Oct 15, 2024

What are the main features of Java? • Expect to discuss platform independence (JVM), object-oriented nature, memory management (garbage collection), multithreading, and robustness. • What is the difference between JDK, JRE, and JVM? • JDK (Java Development Kit): Includes tools for developing Java applications. • JRE (Java Runtime Environment): Contains libraries and JVM to run Java applications. • JVM (Java Virtual Machine): Converts bytecode into machine code and executes it. • What are primitive data types in Java? • Byte, short, int, long, float, double, char, boolean. • Explain the final, finally, and finalize() keywords.

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