tungwaiyip.info

home

about me

links

Blog

< May 2003 >
SuMoTuWeThFrSa
     1 2 3
4 5 6 7 8 910
11121314151617
18192021222324
25262728293031

past articles »

Click for San Francisco, California Forecast

San Francisco, USA

 

New Language Features in JDK 1.5

This slashdot posting points to an interview with Joshua Bloch on the New Language Features in JDK 1.5. Generics is a much awaited enhancement. Today, without the language support, I ask every programmer to minimally document the data type used in a comment, like

  Map userTable;   // username(String) => UserRecord

Still many people fail to do just that. I have to track down the usage of the collection to deduce what data type they are using :(

A generic declaration would be

  Map<String, UserRecord> userTable;

This seems to keep Java collection's light-weight design. It provides some compile time checking and implicit typecasting without the complexity of C++'s template. I still remember spending a lot time debugging the COMPILATION in C++. An compiler error message would spend multiple lines with long and unreadable class names decompose of a template instances...

One reader has pointed out the work on JSR 166 Concurrency Utilities led by Doug Lea. Doug Lea's book Concurrent Programming in Java and the programming library is definitive in this area. It is great that it gets formalized and included in JDK.

2003.05.09 [, ] - comments

 

 

blog comments powered by Disqus

past articles »

 

BBC News

 

Israel election: Netanyahu and rival headed for deadlock (18 Sep 2019)

 

Brexit: Talks 'should not be a pretence' warns Barnier (18 Sep 2019)

 

Inside Afghanistan's 'no-man's land' (17 Sep 2019)

 

Menstrual blood ad complaints rejected (18 Sep 2019)

 

Greta Thunberg to US politicians: 'Sorry, you're not trying hard enough' (18 Sep 2019)

 

Australian hiker rescued after 'carrying' broken leg for two days (18 Sep 2019)

 

Saudi Arabia oil drone attack 'a blow for the world' (18 Sep 2019)

 

Three killed in Monte Carlo-Venice boat speed record attempt (18 Sep 2019)

 

Lord of the Rings returns to New Zealand with Amazon TV show (18 Sep 2019)

 

Ukraine's former national bank chief fears for life after arson attack (17 Sep 2019)

more »

 

SF Gate

 

Ship traffic, September 18 (17 Sep 2019)

 

Cnet Review: These 65-inch TVs are the best (15 Sep 2019)

 

Apple TV Plus is just , but will people pay for it? (15 Sep 2019)

 

Deliveroo ad implying delivery anywhere (even space) is banned in UK (15 Sep 2019)

 

The world wastes tons of food. A grocery ‘happy hour’ is one answer (15 Sep 2019)

 

Executive has plan to turn Spotify into ultimate podcast hub (15 Sep 2019)

more »


Site feed Updated: 2019-Sep-18 03:00