Introduction About Post  Here's an introduction, a list of some essential Java programs commonly asked in interviews, and explanations and expected outputs. These programs cover fundamental topics like data structures, algorithms, and basic Java syntax—skills often tested to assess problem-solving ability and understanding of Java's core concepts.  So, let's get started now. Every Question is included in this post, but the answer is included on every page. I hope this post is helpful for you.  Java Programs Questions and Answers  Q1. Addition of Two Numbers Q2. Area of Circles  Q3. Area of Rectangle  Q4. Print 2D Array  Q5. Copy Array from A1 to A2 Q6. Sum of Natural Number Q7. Binary Search  Q8.Bitwise Operator Q9.Bubble Sort Q10. Calculator Percentage Q11. Char Array To String Q12. Constructor Example  Q13. Create File/IO Q14. Current Date and Time Q15. Date To String Q16. Binary To Decimal Q17. Decimal To Binary  Q18. Decimal To...