Examples of Generic Class, Interface, Method, Constructor

 1. Generics Class Example

public class Msg<T>

{

         public T t;

}

Msg<String> m1=new Msg<String>();
m1.t="Hello";

Msg<Integer> m2= new Msg<Integer>();
m2.t=5;

2. Generics Interface Example

public interface A1<T>

{

        public T m1();

}

public class B1 implements A1<String>{

        public String m1(){

        }

}

public class C1 implements A1<Rectangle>{

        public Rectangle m2(){

        }

}

3. Generic Constructor Example

class Sample {

  <T> Sample() {

              

               }

}

  Sample s1 = new <String> Sample();

4. Generic Method Example

static <T> void m1(T a, String s) {

    …

}

a1.m1(“hello”,”hi”);