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Unicode, UTF, ASCII, ANSI format differences
...r Unicode encoding that particular system uses by default. On Windows and Java, this often means UTF-16; in many other places, it means UTF-8. Properly, Unicode refers to the abstract character set itself, not to any particular encoding.
UTF-16: 2 bytes per "code unit". This is the native format o...
What is the best way to tell if a character is a letter or number in Java without using regexes?
...way to recognize if a string.charAt(index) is an A-z letter or a number in Java without using regular expressions? Thanks.
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How to avoid java.util.ConcurrentModificationException when iterating through and removing elements
...er it I have to remove elements at the same time. Obviously this throws a java.util.ConcurrentModificationException .
20 A...
How to convert int[] to Integer[] in Java?
I'm new to Java and very confused.
13 Answers
13
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Java Enum definition
I thought I understood Java generics pretty well, but then I came across the following in java.lang.Enum:
7 Answers
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为什么我们程序员写不出好代码？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...在ASCII之前编写的，意味着你要重新转换输入输出。旧的系统通常会计算空格字符，仅仅是为了弄清其在数据库中是干嘛的，这更要进行转换。
程序员做大量的工作来截图、重新格式化等，而过一段时间后，他们可能会花更多...
Get ID of last inserted document in a mongoDB w/ Java driver
...D (ObjectID) of the last inserted document of a mongoDB instance using the Java driver?
8 Answers
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How to import a class from default package
...h the default package. I have one class in default package - Calculations.java and I want to make the use of that class in any of the package (for instance in com.company.calc ). When I try to make the use of the class which is in the default package, it's giving me a compiler error. It's not abl...
How to remove all debug logging calls before building the release version of an Android app?
...oguard, here is a very low-tech solution:
Comment logs:
find . -name "*\.java" | xargs grep -l 'Log\.' | xargs sed -i 's/Log\./;\/\/ Log\./g'
Uncomment logs:
find . -name "*\.java" | xargs grep -l 'Log\.' | xargs sed -i 's/;\/\/ Log\./Log\./g'
A constraint is that your logging instructions mu...
What is non-blocking or asynchronous I/O in Node.js?
In the context of Server Side Javascript engines, what is non-blocking I/O or asynchronous I/O? I see this being mentioned as an advantage over Java server side implementations.
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