// Show types of T and V.
void showTypes() {
System.out.println("Type of T is " +
ob1.getClass().getName());
System.out.println("Type of V is " +
ob2.getClass().getName());
}
T getob1() {
return ob1;
}
V getob2() {
return ob2;
}
}
// Demonstrate TwoGen.
class SimpGen {
public static void main(String args[]) {
TwoGen<Integer, String> tgObj =
new TwoGen<Integer, String>(88, "Generics");
// Show the types.
tgObj.showTypes();
// Obtain and show values.
int v = tgObj.getob1();
System.out.println("value: " + v);
String str = tgObj.getob2();
System.out.println("value: " + str);
}
}
The output from this program is shown here:
Type of T is java.lang.Integer
Type of V is java.lang.String
value: 88
value: Generics
Notice how TwoGen is declared:
class TwoGen<T, V> {
It specifies two type parameters: T and V, separated by a comma. Because it has two type
parameters, two type arguments must be passed to TwoGen when an object is created, as
shown next:
TwoGen<Integer, String> tgObj =
new TwoGen<Integer, String>(88, "Generics");
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