Demonstrate a raw type. : Generic Parameter « Generics « Java

Demonstrate a raw type.

class Gen<T> {
  T ob; // declare an object of type T

  Gen(T o) {
    ob = o;

  T getob() {
    return ob;

class RawDemo {
  public static void main(String args[]) {
    Gen<Integer> iOb = new Gen<Integer>(88);

    Gen<String> strOb = new Gen<String>("Generics Test");

    Gen raw = new Gen(new Double(98.6));

    double d = (Double) raw.getob();
    System.out.println("value: " + d);

    strOb = raw; // OK, but potentially wrong
    raw = iOb; // OK, but potentially wrong


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