I've often wished that the JavaBean specification included this feature for setters so that one can chain them as such, but as James pointed out, this is not a valid bean construct. In fact, defining setters to return anything other than void will break lots of things that expect JavaBeans.
Tejas Jain wrote:I saw someone did something like:
User user = new User(); //User is a Java Bean
user.setName("John Smith").setPhone("800-123-4567").print(); // This is a new syntax to me. From which version does it start? I did not see this in Java 5
Check out StringBuffer, available since Java 1.0, which uses the same technique. As Bear said, this is called chaining. It's the same as the following, provided setName and setPhone return a reference to the current object ("this"):