GroovyBeans are JavaBeans but using a much simpler syntax.
Here's an example:
Notice how the properties look just like public fields. You can also set named properties in a bean constructor in Groovy. In Groovy, fields and properties have been merged so that they act and look the same. So, the Groovy code above is equivalent to the following Java code:
Property and field rules
When Groovy is compiled to bytecode, the following rules are used.
- If the property is private, then a Java field is used to represent the property.
- If a public or protected property is declared (properties are public by default), then a public or protected getter and setter are created along with a private Java field.
- If you don't declare getters or setters for public or protected properties, they are automatically created for you at the bytecode level.
- If you create a public or protected property, you can overload any auto-created methods.
So, for example, you could create a read only property or a public read-only property with a protected setter like this:
Note that properties need <i>some</i> kind of identifier: variable type ("String"), the "def" keyword, or the "@property" keyword.