Most Frequently Asked Java Interview Questions (2025)
29 frequently asked Java interview questions for experienced developers: JVM internals, OOP, collections, exceptions, and multithreading — with answers.
Java
Java language and interview fundamentals.
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Fix: Unable to Retrieve JDBC Result Set for SELECT * FROM TABLE
The JDBC error 'Unable to retrieve result set' is a generic wrapper. The real cause is almost always an unresolvable table name, a reserved word, a missing SELECT grant, or a closed statement — here's how to tell them apart and fix each.
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