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

 

European elections 2019: Power blocs lose grip on Parliament (27 May 2019)

 

Islamic State: Iraq sentences French citizens to death (26 May 2019)

 

Trump in Japan: US president meets Emperor Naruhito (27 May 2019)

 

Nepal says overcrowding not 'sole reason' for Everest death toll rise (26 May 2019)

 

Leading UK Conservative warns of election 'crushing' (27 May 2019)

 

Thai vet helps woman give birth by Bangkok road (26 May 2019)

 

German Jews warned not to wear kippas after rise in anti-Semitism (26 May 2019)

 

Bart Starr: Former Green Bay Packers quarterback dies at 85 (26 May 2019)

 

Nepal explosions kill four in capital Kathmandu (26 May 2019)

 

Rescued hiker: 'It came down to life and death and I had to choose' (26 May 2019)

more »

 

SF Gate

 

Women did everything right. Then work got ‘greedy’ (26 May 2019)

 

Airlines turn to doctors with goal of limiting long flights’ negative effects (26 May 2019)

 

New Coke was a debacle. It’s coming back. Blame Netflix (25 May 2019)

 

Best headphones from to (25 May 2019)

 

Vice tries to turn the page by making content for others (25 May 2019)

 

CEOs get ,000 pay raise, leaving workers further behind (24 May 2019)

more »


Site feed Updated: 2019-May-26 21:00