Raw Types and Legacy Code

To handle the transition to generics, Java allows a generic class to be used without any type arguments.

Here is an example that shows a raw type in action:

 
class MyClass<T> {
  T ob;
  MyClass(T o) {
    ob = o;
  }
  T getob() {
    return ob;
  }
}
public class Main {
  public static void main(String args[]) {
    MyClass raw = new MyClass(new Double(98.6));
    double d = (Double) raw.getob();
    System.out.println("value: " + d);
  }
}

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