具有两个类型参数的泛型类

class twogen<t, v> {
    t ob1;
    v ob2;

    // construtor que recebe objetos de tipos t e v
    twogen(t o1, v o2) {
        ob1 = o1;
        ob2 = o2;
    }

    // exibe os tipos de t e 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; }
}

twogen<integer, string> tgobj = new twogen<>(88, "generics");
tgobj.showtypes(); // exibe os tipos de t e v

int v = tgobj.getob1();  
system.out.println("value: " + v);  

string str = tgobj.getob2();  
system.out.println("value: " + str);  

type of t is java.lang.integer  
type of v is java.lang.string  
value: 88  
value: generics  

twogen<integer, string> tgobj = new twogen<>(88, "generics");

twogen<string, string> x = new twogen<>("a", "b");

class nomeclasse<parâmetrostipo> {
    // implementação
}

NomeClasse<ArgumentosTipo> nomeVariavel = new NomeClasse<>(ArgumentosConstrutor);