Java
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Core Java
How to Find Matched Rules in Drools
In Drools-based applications, it is often necessary to know which rules were executed for a given set of facts. This…
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Enterprise Java
Java Commit with JdbcTemplate vs DataSource
In Spring-based Java applications, database access is commonly performed using JdbcTemplate or higher-level abstractions such as JPA. A frequent source…
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Core Java
How to Reset and Reuse InputStream
In Java, InputStream is commonly used to read data from files, network sockets, or in-memory buffers. A frequent requirement is…
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Core Java
Getting Started with MyBatis Dynamic SQL
MyBatis Dynamic SQL is a type-safe Java DSL (Domain-Specific Language) for building SQL queries programmatically instead of writing SQL strings…
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Core Java
Handling Null Values with MapStruct
MapStruct is a compile-time code generation framework that simplifies mapping between Java beans by eliminating boilerplate conversion code and relying…
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Core Java
Transposing a double[][] Matrix in Java
Matrix manipulation is common in Java applications, from data analytics to machine learning, and matrix transposition is one of the…
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Core Java
Java PostgreSQL Query Cancellation Explained
PostgreSQL is known for its robustness, performance, and strong support for concurrency. However, while working with long-running queries, background jobs,…
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Core Java
Joining Unrelated Tables with JPA Criteria API
In real-world enterprise applications, it is common to encounter database tables that do not have explicit JPA relationships (such as…
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Core Java
How to Fix Hibernateâs token ‘*’ SyntaxException
Hibernateâs JPQL (Java Persistence Query Language) provides an object-oriented abstraction over SQL, allowing us to query entities instead of database…
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