Fixing “Access Restriction” Errors for BASE64Encoder in Eclipse
Learn how to resolve the "Access Restriction" error for sun.misc.BASE64Encoder in Eclipse. Step-by-step instructions and alternatives provided.
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JPQL Custom Data Retrieval: Mapping Specific Columns to Custom Classes
Learn how to retrieve specific columns using JPQL and map them to a custom class. Reduce memory usage and enhance efficiency with this approach.
JPA @SecondaryTables: Mapping an Entity to Multiple Tables
Learn how to use JPA's @SecondaryTables annotation to map a single entity across multiple tables. Step-by-step examples with JUnit test cases included.
Java Persistence API (JPA) Embeddables: Addressing Shared Object Mappings
Learn how to use JPA Embeddable objects for shared mappings. Implement Address in Customer and Orders using Embeddable classes with examples and test cases.
UML Use Case Diagrams: Purpose, Elements, and Relationships
Learn the purpose, elements, and relationships in UML use case diagrams. Explore their role in requirement analysis and system design with examples.
UML Class Diagram Relationships: Dependency, Aggregation, Composition, and More
Learn about the five key relationships in UML class diagrams: dependency, aggregation, composition, inheritance, and realization. Explore examples in Java for better understanding.
Understanding Association, Aggregation, and Composition in UML Class Diagrams
Explore the differences between Association, Aggregation, and Composition in UML class diagrams. Learn how and when to use each relationship type effectively.
How to Link Java Classes to UML Class Diagrams in JDeveloper
Learn how to link Java classes to UML class diagrams in JDeveloper and establish a bi-directional relationship. Generate classes directly from UML diagrams with this step-by-step
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