ニュース
TOTD #30 explained how to create CRUD application using Grails and hosted using in-built Jetty servlet engine and in-memory HSQLDB database.
But don't try to connect to them with JDBC in Java. It is only for relational databases, so stick with the Apache Derby and MySQL instances. JDBC connections are expensive When you learn how to ...
JPA 3 and Hibernate persistence.xml file As developers migrate their old Java Persistence API applications to JPA 3, their progress is often halted when an incorrectly configured JPA 3 persistence.xml ...
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