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JDBC provides three types of statements to interact with the database:
1️⃣ Statement
➡️ Used for simple SQL queries without parameters.
➡️ Suitable for executing static SQL like SELECT * FROM users.
⚠️ Less efficient for repeated queries.
2️⃣ PreparedStatement
➡️ Precompiled SQL statement that accepts parameters.
➡️ More secure (prevents SQL injection) and faster for repeated executions.
🔸 Example: SELECT * FROM users WHERE id = ?
3️⃣ CallableStatement
➡️ Used to call stored procedures in the database.
➡️ Can handle IN, OUT, and INOUT parameters.
🔸 Example: {call getUserDetails(?)}
🧠 Rule of thumb:
- Use Statement for simple one-time queries
- Use PreparedStatement for dynamic, repeated, and secure queries
- Use CallableStatement for stored procedures#Java #JavaInterview #JDBC #Database
#PreparedStatement #CallableStatement #SQL #JavaTips #CodingInterview #interviewprepration
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