GenSample.java

// http://edn.embarcadero.com/article/32054
class BasicGeneric <BriansAwesomeGenericDataType>{
    private BriansAwesomeGenericDataType data;

    public BasicGeneric(BriansAwesomeGenericDataType data){
        this.data = data;
    }

    public BriansAwesomeGenericDataType getData(){
        return data;
    }
}

public class GenSample{
    public GenSample(){
    }

    public String test01(String input){
        String data01 = input;

        BasicGeneric<String> basicGeneric = new BasicGeneric<String>(data01);
        String data02 = basicGeneric.getData();

        return data02;
    }

    public int test02(int input){
        Integer data01 = new Integer(input);

        BasicGeneric <Integer> basicGeneric = new BasicGeneric<Integer>(data01);
        Integer data02 = basicGeneric.getData();
        return data02;
    }

    public double test03(double input){
        Double data01 = new Double(input);

        BasicGeneric <Double> basicGeneric = new BasicGeneric<Double>(data01);
        Double data02 = basicGeneric.getData();
        return data02;
    }

    public static void main(String [] args){
        GenSample sample = new GenSample();
        System.out.println(sample.test01("this is generic string data"));
        System.out.println(sample.test02(12));
        System.out.println(sample.test03(3.14159));
    }
}