package generics;

import java.util.*;

/**

* RUN:

* javac generics/GenericArray2.java && java generics.GenericArray2

* OUTPUT:

* 0 1 2 3 4 5 6 7 8 9

* java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to [Ljava.lang.Integer;

*/

public class GenericArray2<T> {

private Object[] array;

public GenericArray2(int size) {

array = new Object[size];

}

public void put(int index, T item) {

array[index] = item;

}

@SuppressWarnings("unchecked")

public T get(int index) {

return (T)array[index];

}

@SuppressWarnings("unchecked")

public T[] rep() { return (T[])array; }

public static void main(String[] args) {

GenericArray2<Integer> gai = new GenericArray2<Integer>(10);

for (int i = 0; i < 10; i++) {

gai.put(i, i);

}

for (int i = 0; i < 10; i++) {

System.out.print(gai.get(i) + " ");

}

System.out.println();

try {

Integer[] a = gai.rep();

}

catch (Exception e) {

System.out.println(e);

}

}

}