How to execute asynchronous query with Spring JPA and PostgreSQL | Spring Boot

In tradition approach, implementing Data Access Layer makes lots of boilerplate code. Spring Data provides us Spring JPA which supports the ways to write interface for repositories and custom finder methods. The implementation will be done automatically by Spring Framework.

The tutorial shows you how to execute asynchronous query with Spring JPA and PostgreSQL using Spring Boot.

Related articles:
Java 8 Streams
How to use Spring JPA MySQL | Spring Boot
How to use Spring JPA with PostgreSQL | Spring Boot
How to get streaming results with Spring JPA, Java 8 Stream and PostgreSQL | Spring Boot
@DataJPATest with Spring Boot

[Continue reading…] “How to execute asynchronous query with Spring JPA and PostgreSQL | Spring Boot”

How to get streaming results with Spring JPA, Java 8 Stream and PostgreSQL | Spring Boot

In tradition approach, implementing Data Access Layer makes lots of boilerplate code. Spring Data provides us Spring JPA which supports the ways to write interface for repositories and custom finder methods. The implementation will be done automatically by Spring Framework.

The tutorial shows you how to make streaming results with Spring JPA, Java 8 Stream and PostgreSQL using Spring Boot.

Related articles:
Java 8 Streams
How to use Spring JPA MySQL | Spring Boot
How to use Spring JPA with PostgreSQL | Spring Boot
@DataJPATest with Spring Boot

[Continue reading…] “How to get streaming results with Spring JPA, Java 8 Stream and PostgreSQL | Spring Boot”

Java 8 – How to convert List to Map & Map to List

In the tutorial, JavaSampleApproach will guide you How to convert List to Map (Map to List) with Java 8.

Related Posts:
1. Java 8 – Lambda Expressions
2. Java 8 – Functional Interfaces
3. Java 8 – Method References

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How to use Java 8 Encode (Decode) an Image to Base64

For some purpose like transfering an image through RestfulAPI or saving an image to a DataBase, We need Encoder (Decode) the image to Base64. In the tutorial, JavaSampleApproach will guide you how to use Java 8 for converting.

Related post: Java 8 Base64

[Continue reading…] “How to use Java 8 Encode (Decode) an Image to Base64”

Java 8 Base64

Java 8 Base64 provides a standard way to do Base64 encoding and decoding.
There are three types of Base64 encoding:
Basic: Encoder produces a set of characters within A-Za-z0-9+/. Decoder rejects any character NOT mapped to A-Za-z0-9+/.
URL: Encoder produces a URL or safe filename which is set of characters within A-Za-z0-9+_.
MIME: Output is mapped to MIME friendly format.

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