17 December 2024
09 August 2024
#Spring_LDAP
Question count - Last updated - V4 (09-Aug-2024)
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30 May 2024
#CoreJava
Last updated - V4 (16-Sep-2025)
Key Concepts
Topic | Sub-Topics | Basic | Intermediate | Advanced | Expert |
---|---|---|---|---|---|
Java Basics | History, Features, JVM, JRE, JDK, Hello World, Data Types, Variables, Operators, Keywords | ✅ | |||
Control Statements | if-else, switch, loops (for, while, do-while), break, continue, return | ✅ | |||
OOP Concepts | Class, Object, Constructor, Inheritance, Polymorphism, Encapsulation, Abstraction, Method Overloading | ✅ | ✅ | ||
String Handling | String class, StringBuffer, StringBuilder, Immutable Strings, String Pool, String methods | ✅ | ✅ | ||
Arrays | Single-Dimensional, Multi-Dimensional, Array class methods, Copying, Searching, Sorting | ✅ | ✅ | ||
Wrapper Classes | Autoboxing, Unboxing, Primitive wrappers (Integer, Double, etc.) | ✅ | ✅ | ||
Exception Handling | try-catch, finally, throw, throws, custom exceptions, exception hierarchy | ✅ | ✅ | ✅ | |
Collections Framework | List, Set, Map, Queue, Iterator, Generics, Utility classes (Collections, Arrays) | ✅ | ✅ | ✅ | |
Multithreading | Thread class, Runnable, Synchronization, Inter-thread communication, Executors, Concurrency utilities | ✅ | ✅ | ✅ | |
Java I/O | Streams, Readers/Writers, File Handling, Serialization, NIO, NIO.2 | ✅ | ✅ | ✅ | |
Inner Classes | Member, Local, Anonymous, Static nested classes | ✅ | ✅ | ||
Java 8 Features | Lambda Expressions, Functional Interfaces, Streams API, Optional, Default/Static methods in interfaces | ✅ | ✅ | ✅ | |
Memory Management | Stack vs Heap, Garbage Collection, Finalization, References (Soft, Weak, Phantom) | ✅ | ✅ | ✅ | |
Java Reflection API | Class object, Reflection for methods, fields, constructors, Annotations | ✅ | ✅ | ||
Annotations | Built-in annotations, Custom annotations, Meta-annotations, Processing annotations | ✅ | ✅ | ||
JDBC | Driver types, Connection, Statement, PreparedStatement, ResultSet, Transactions | ✅ | ✅ | ✅ | |
Serialization | Serializable interface, transient keyword, Externalizable | ✅ | ✅ | ||
Java Networking | Socket, ServerSocket, Datagram, URL, HttpURLConnection | ✅ | ✅ | ✅ | |
Java Security | Access Modifiers, Security Manager, Cryptography APIs, JAAS | ✅ | ✅ | ||
JVM Internals | ClassLoader, Bytecode, JIT Compiler, Memory Areas, GC algorithms, JVM tuning | ✅ | ✅ | ||
Design Patterns in Java | Singleton, Factory, Builder, Observer, Strategy, Proxy, DAO | ✅ | ✅ | ||
Advanced Concurrency | Fork/Join framework, CompletableFuture, Parallel Streams, Locks, Atomic variables | ✅ | ✅ | ||
Java Modules (Java 9+) | Module system, module-info.java, readability, exports, services | ✅ | ✅ | ||
New Java Features (10?21) | var keyword, Records, Sealed classes, Switch Expressions, Pattern Matching, Virtual Threads | ✅ | ✅ |
Interview question
Related Topics
Java_Versions |
OOP Concepts |
Collections |
Exception_Handling |
String_Class |
MultiThread |
Generics |
JDBC |
Java_IO |
25 May 2024
#SQL_Server
Last updated - V4 (16-Sep-2025)
Key Concepts
Topic | Sub-Topics | Basic | Intermediate | Advanced | Expert |
---|---|---|---|---|---|
SQL Server Basics | Installation, Editions, Tools (SSMS, Azure Data Studio) | ✅ | ✅ | ||
Database Design | Schemas, Tables, Views, Keys, Normalization | ✅ | ✅ | ✅ | |
SQL Queries | SELECT, INSERT, UPDATE, DELETE, Joins, Subqueries | ✅ | ✅ | ✅ | |
Stored Procedures & Functions | User-defined procedures, Scalar & Table-valued functions | ✅ | ✅ | ✅ | |
Indexes | Clustered, Non-clustered, Unique, Filtered, Columnstore | ✅ | ✅ | ✅ | |
Transactions & Concurrency | ACID, Isolation levels, Deadlocks, Locking | ✅ | ✅ | ✅ | |
Triggers & Constraints | DML Triggers, DDL Triggers, Check, Default, Foreign Key | ✅ | ✅ | ||
Performance Tuning | Execution Plans, Index Tuning, Query Optimization | ✅ | ✅ | ||
Replication & High Availability | Log Shipping, Mirroring, AlwaysOn, Replication | ✅ | ✅ | ||
Security | Authentication, Authorization, Roles, Encryption, Auditing | ✅ | ✅ | ✅ | |
Backup & Recovery | Full, Differential, Log backups, Restore strategies | ✅ | ✅ | ✅ | ✅ |
Advanced Features | Partitioning, Service Broker, Change Data Capture (CDC) | ✅ | ✅ | ||
Integration & BI | SSIS, SSRS, SSAS, Power BI Integration | ✅ | ✅ | ✅ | |
Cloud & Hybrid | SQL Server on Azure, Managed Instances, Elastic Pools | ✅ | ✅ | ✅ | |
Monitoring & Maintenance | Jobs, Alerts, DMV queries, Index maintenance | ✅ | ✅ | ✅ |
Interview question
Related Topics
04 May 2024
#SOAP
Last updated - V4 (16-Sep-2025)
Key Concepts
Topic | SubTopic | Basic ✅ | Intermediate ✅ | Advanced ✅ | Expert ✅ |
---|---|---|---|---|---|
Introduction | What is SOAP, Features, Benefits, Protocols | ✅ | ✅ | ✅ | ✅ |
SOAP vs REST | Differences, Use cases, Advantages, Limitations | ✅ | ✅ | ✅ | ✅ |
WSDL | What is WSDL, Components, Types, Bindings | ✅ | ✅ | ✅ | ✅ |
SOAP Messages | Envelope, Header, Body, Fault, XML structure | ✅ | ✅ | ✅ | ✅ |
SOAP Fault | Fault codes, Faultstring, Faultactor, Details | ✅ | ✅ | ✅ | ✅ |
SOAP Security | WS-Security, Authentication, Encryption, Digital Signatures | ✅ | ✅ | ✅ | ✅ |
SOAP Headers | Custom headers, MustUnderstand, Role, Processing rules | ✅ | ✅ | ✅ | ✅ |
SOAP Encoding | Data types, Serialization, Literal vs Encoded, Arrays | ✅ | ✅ | ✅ | ✅ |
SOAP with Attachments | MTOM, SwA, Binary content, File transfer | ✅ | ✅ | ✅ | ✅ |
Tools & Implementation | SOAP UI, Axis, CXF, JAX-WS, Spring Web Services | ✅ | ✅ | ✅ | ✅ |
Advanced Features | WS-Addressing, WS-ReliableMessaging, Transactions, Interceptors | ✅ | ✅ | ✅ | |
Error Handling | SOAP fault handling, Retry mechanisms, Logging | ✅ | ✅ | ✅ | |
Integration | Integrating SOAP with Java, Spring Boot, Enterprise apps | ✅ | ✅ | ✅ | |
Performance & Optimization | Caching, Connection pooling, Compression, Message size | ✅ | ✅ | ||
Best Practices | Versioning, Security, Interoperability, Documentation | ✅ | ✅ | ✅ | ✅ |
Interview question
Related Topics
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