The recommended way to get started using type converter in your project is with a dependency management system – the snippet below can be copied and pasted into your build.

<dependency>
	<groupId>pl.jsolve</groupId>
	<artifactId>typeconverter</artifactId>
  <version>1.0.1</version>
</dependency>

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TypeConverter is a utility class that makes type conversion very easy. It's very fast and extendable.

Simple usage

Target convertedObject = TypeConverter.convert(objectThatWillBeConverted, Target.class);

so for example to convert String to Double

Double result = TypeConverter.convert("12", Double.class);

Supported conversions

Multiple conversions are supported out of the box. Take a look at the following list:

• Boolean <-> Integer
• String <-> Number
• Number <-> Number
• Long <-> java.util.Date,
• Long <-> java.util.Calendar,
• java.util.Date <-> java.util.Calendar.
• Array <-> Collection
• Collection <-> Collection
• Object -> String

Primitives are also supported.

Custom converters

When not a single converter listed above satisfies your needs you can easily "teach" TypeConverter new conversion. To do so you need to create and register your own converter.

Creating converters

To create new converter just create a class that implements Converter interface, i.e.:

class ObjectToStringConverter implements Converter<Object, String> {

   @Override
   public String convert(Object source) {
      return source.toString();
   }
}

or an anonymous class:

Converter objectToStringConverter = new Converter<Object, String>() {
   @Override
   public String convert(Object source) {
      return source.toString();
   }
};

Converters created above will work for all classes as every class in Java extends Object.

Registering converters

To register new converter use TypeConveter.registerConverter method. Suppose we have a converter called converter that supports conversion from type Source to type Target.

TypeConverter.registerConverter(Source.class, Target.class, converter);

Our newly registered converter from Source.class to Target.class will override any already registered converter that supports the same conversion.

Unregistering converters

To unregister converter from Source.class to Target.class:

TypeConverter.unregisterConverter(Source.class, Target.class);