Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
220 views
in Technique[技术] by (71.8m points)

java - What condition does while(true) test? When is it true and false?

I do no understand why anybody would use

while(true) {
   //do something
}

instead of

boolean condition = true;
while(condition == true) {
   //do something
}

The latter is super easy to understand, whilst the former is not.

So, what condition does while(true) check? When is while(true) true, and when is it false?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

When is while(true) true, and when is it false?

It's always true, it's never false.

Some people use while(true) loops and then use break to exit them when a certain condition is true, but it's generally quite sloppy practice and not recommended. Without the use of break, return, System.exit(), or some other such mechanism, it will keep looping forever.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

1.4m articles

1.4m replys

5 comments

56.9k users

...