Name: Generics

Class name: SampleGenericsDemo

Class content: public static void main(String[] args) { SampleGenerics<Integer> integerObject = new SampleGenerics<Integer>(45); // LINE A integerObject.showType(); int integerValue = integerObject.getObject(); System.out.println("Given Integer Value is : " +integerValue); SampleGenerics<String> stringObject; stringObject = new SampleGenerics<String>("MeritCampus"); // LINE B stringObject.showType(); String str = stringObject.getObject(); System.out.println("Given String is : " +str); }

Include main method: false

Output: Type of T is : java.lang.Integer Given Integer Value is : 45 Type of T is : java.lang.String Given String is : MeritCampus

Description: In this program contains two classes. One class is generic class i.e. <cw>SampleGenerics, </cw>and the other class is <cw>SampleGenericsDemo, </cw>which uses <cw>SampleGenerics</cw>. At <cw>LINE A </cw>we create an object for <cw>Integer</cw> and at <cw>LINE B </cw>we create one more object for <cw> String</cw>. By using the objects we invoke the methods of <cw>SampleGenerics</cw> class.

Things to try: <bullet>Create One more object for <cw>Double</cw> in <cw>SampleGenericsDemo</cw> and call the methods of <cw>SampleGenerics. </cw>class.</bullet>

class SampleGenericsDemo
{
    public static void main(String[] args)
    {
        SampleGenerics<Integer> integerObject = new SampleGenerics<Integer>(45); // LINE A
        integerObject.showType();
        int integerValue = integerObject.getObject();
        System.out.println("Given Integer Value is : " +integerValue);
                
        SampleGenerics<String> stringObject;
        stringObject = new SampleGenerics<String>("MeritCampus"); // LINE B
        stringObject.showType();
        String str = stringObject.getObject();
        System.out.println("Given String is : " +str);
          
    }
}

class SampleGenerics<T> {
    
    T object;
        
    SampleGenerics(T object)
    {
        this.object = object;
    }
    public T getObject() {
        
        return object;
    }
        
    void showType()
    {
        System.out.println("Type of T is : " + object.getClass().getName());
    }
}