java - Convert Calendar to String

I want to convert Calendar output to String. The following is my code

Calendar cal=Calendar.getInstance();

System.out.println("Time is "+cal.getTime());
String str=cal.getTime();   //This is how I want to store the output, but this is wrong.

Here the output of the getTime() method is of 'Date' type, so getting error.
Is there any way to typecast or any solution?