Interview Questions

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Java Interview Questions

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41.

What are the different ways to achieve synchronization?

intermediate

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42.

What is the difference between wait() and sleep()?

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43.

What is the volatile keyword?

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44.

What is the Executor framework?

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45.

Explain the JVM memory structure.

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46.

What is garbage collection and how does it work?

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47.

What causes OutOfMemoryError and how to handle it?

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48.

What is the difference between shallow copy and deep copy?

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49.

What is serialization and deserialization?

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50.

What is the purpose of serialVersionUID?

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51.

What is the Singleton pattern and how do you implement it?

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52.

Explain the Factory pattern.

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53.

What is the Observer pattern?

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54.

What is the Strategy pattern?

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55.

What is dependency injection and how does Spring implement it?

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56.

What are the different types of Spring bean scopes?

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57.

What is Spring Security and its core features?

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58.

What is Spring Data JPA and its benefits?

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59.

How do you handle database connections in JDBC?

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60.

What is the difference between Statement and PreparedStatement?

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Showing 41 to 60 of 89 results

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