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How to get IP address of the device from code?
...his is my helper util to read IP and MAC addresses. Implementation is pure-java, but I have a comment block in getMACAddress() which could read the value from the special Linux(Android) file. I've run this code only on few devices and Emulator but let me know here if you find weird results.
// Andr...
Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?
I see java.util.function.BiFunction, so I can do this:
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What's the difference between getPath(), getAbsolutePath(), and getCanonicalPath() in Java?
...ence between getPath() , getAbsolutePath() , and getCanonicalPath() in Java?
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What is the ellipsis (…) for in this method signature?
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Those are Java varargs. They let you pass any number of objects of a specific type (in this case they are of type JID).
In your example, the following function calls would be valid:
MessageBuilder msgBuilder; //There should probably ...
How to convert/parse from String to char in java?
How do I parse a String value to a char type, in Java?
14 Answers
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Java Synchronized Block for .class
What does this java code mean? Will it gain lock on all objects of MyClass ?
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炒股是世界难题！历史上那些名人炒股水平 - 轻松一刻 - 清泛网 - 专注C/C++...
...也亏了2万英镑。
牛顿感慨地说：“我能计算出天体运行的轨迹，却难以预料到人们的疯狂。”
丘吉尔
1929年，丘吉尔在美国证券巨头巴鲁克陪同下，在华尔街股票交易所开了一个户头，但忙活了整整一天，做...
Does the JVM prevent tail call optimizations?
...bproject's status is listed as "proto 80%"; it is unlikely to make it into Java 7, but I think it has a very good chance at Java 8.
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When should I use File.separator and when File.pathSeparator?
...le part is implied. But who knows why they did a lot of what they did with Java.
– user489041
Dec 21 '16 at 17:34
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Best practices/performance: mixing StringBuilder.append with String.concat
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Effective Java 2-nd edition: Using the string concatenation operator repeatedly to concatenate n strings requires time quadratic in n. So is it still relevant?
– gkiko
Mar 17 '15 at 8:49
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