java-generic

public class GenericsTest {

public static void (String[] args) {
Box <Integer> intergerBox = new Box<Integer>(); // suppose only store integers
integerBox.add(456);
Integer oneInteger=integerBox.get();
System.out.println(oneInteger)
)

class Box<T> {
private T t ;  // T stands for "Type"
public void add (T t){this.t=t}
public T get() { return t} }

}