To access data in the database using java

Your question is ambiguously worded. What I believe you are asking is how can you read an MS Access database from a Java program. (If that is not the case, then please re-phrase your question).

Java 1.7 : Java JDBC: An example to connect MS Access database
Java 1.8 : JDBC: An example to connect MS Access database in Java 8
For other databases,
My SQL database : Java JDBC: An example to connect MySQL database
Oracle database : Java JDBC: An example to connect Oracle database

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Since you are using or planning on using Java. What you could do is download a framework to make it a lot easier for you. You could try and look into hibernate or Ibatis. Both of these frameworks are opensource and free to download. You could also download the tutorials to make it a lot easier for you to develop. Hope this works.