java-builder2

Generates chained or unchained java builders (see java-builder-pattern-tricks).

• write concise java code to generate a class with a builder
• supports builder chaining for mandatory parameters
• represents non-mandatory parameters using java.util.Optional
• performs null checks
• converts Number classes to primitives in builder method parameters because cannot be null

Getting started

Add this maven dependency to your pom.xml:

<dependency>
  <groupId>com.github.davidmoten</groupId>
  <artifactId>java-builder2</artifact>
  <version>VERSION_HERE</version>
  <scope>test</scope>
</dependency>

Normally you'll add it as a test scoped dependency.

Usage

The code below (put in a unit test or a main method in a test class) generates a Person class in the target directory and prints it to stdout.

Generator
  .pkg("com.github.davidmoten.javabuilder") //
  .className("Person") //
  .type("String").name("firstName").mandatory().entryMethod().build() //
  .type("String").name("lastName").mandatory().build() //
  .type("Integer").name("age").build() //
  .type("int").name("height").defaultValue("0").build() //
  .type("String").name("nickname").defaultValue("\"bucko\"").build() //
  .generate();

There are other overloads of generate to write the class to a directory or an OutputStream. You can chain generate calls to do all of those things if you want.

Building

mvn clean install