Java inicialize object using string and reflection

My program will serialize an instance of a class called Configuration. First, take keys values of the atributes from a configuration txt file like:

SECONDS=60 
NAME=JINGGLE 
LIFE=true

So, before serialize, I must to take this key values and translate to the instance:

for(Entry<String, String> entry : attributes.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();

            Field field = c.getDeclaredField(key);
            field.setAccessible(true);

            try {
                        //Get the data type and transform the string to this type
                        Class<?> type = field.getType();
                        Object atribute ;
                        atribute = type.getConstructor(String.class).newInstance(value);


                        field.set(o, atribute);

This works, for example, with Strings and Integers, but no for primitive values or booleans... How can I do for instance a boolean using reflection and getting the valor with a string like true or false? Or how do it with primitive values int.