Jr Java Developer Interview Questions

3,800 jr java developer interview questions shared by candidates

Leetcode: Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: Open brackets must be closed by the same type of brackets. Open brackets must be closed in the correct order. Every close bracket has a corresponding open bracket of the same type.
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Junior Java Developer

Interviewed at Playtech

3.5
Mar 19, 2025

Leetcode: Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: Open brackets must be closed by the same type of brackets. Open brackets must be closed in the correct order. Every close bracket has a corresponding open bracket of the same type.

One of the key questions they asked me during the interview was to explain a project I had worked on in detail, including the technologies used, the challenges faced, and how I overcame them. They were particularly interested in my problem-solving approach and how I applied my technical knowledge practically. This question tested both my communication skills and depth of understanding in the tools and concepts I had listed on my resume
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Junior Java Developer

Interviewed at Celebal Technologies

4.1
Jun 12, 2025

One of the key questions they asked me during the interview was to explain a project I had worked on in detail, including the technologies used, the challenges faced, and how I overcame them. They were particularly interested in my problem-solving approach and how I applied my technical knowledge practically. This question tested both my communication skills and depth of understanding in the tools and concepts I had listed on my resume

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