| package p; | |
| class Cell<T> { | |
| T t; | |
| public void setT(T t) { | |
| this.t= t; | |
| } | |
| public T getT() { | |
| return t; | |
| } | |
| } | |
| class CellTest { | |
| public static void main(String[] args) { | |
| Cell<Number> c1= new Cell<Number>(); | |
| c1.setT(17); | |
| c1.setT(17.3f); | |
| Number n= c1.getT(); | |
| Cell<Number> c2= null; | |
| c2.setT(18); | |
| Cell<Number> c3= new Cell<Number>(); | |
| c3.setT(new Long(23)); | |
| c2= c3; | |
| } | |
| } |