Instantiate Fields Dynamically in an User defined object

Need to create an object dynamically using the field names passed in the method parameter.

Something like..

public void createDisplay(List<String> fields) {
//fetch fields names
//create an object in java using the fields passed
//assign values to the dynamically created fields.
}

Or

public void createDisplay(Schema schema) {
//create an object in java using the schema
//assign values to the dynamically created fields.
}

Can anyone help.