java-api

What is standard for Interface naming in java api

由 橙三吉。 提交于 2019-11-30 08:31:50
问题 I am asked by one of colleague about the Throwable class in java API. As per standard, I do understand, every word ending *able is a interface in java API. There is a industry standard about using such words as Interface names. So, I unknowingly, told him about this as base interface for all the exception and error types in java world. Then he shows me the java file for this class. My questions: Why java people has choosen this name to be a class. I think this should have been a interface by

Can I store image files in firebase using Java API?

由 烈酒焚心 提交于 2019-11-29 15:50:32
问题 Is there any way to store image files in firebase using Java api to be used for android application? I have read this thread Can I store image files in firebase using Java API and still there is no answer. I know that there is an official api for it, called firepano here is the link https://github.com/firebase/firepano but it is for Javascript library. is there any solution for Java library?? 回答1: I used this code and now it's working: Bitmap bmp = BitmapFactory.decodeResource(getResources(),

Finding SMTP host and port knowing the e-mail address using JAVA API

由 自闭症网瘾萝莉.ら 提交于 2019-11-29 14:02:01
I made a simple application to send e-mails using Java API and have a question: Is there any way to find out the SMTP host knowing the e-mail address of the one who will login to send an e-mail? And also the port? For example, if the sender's e-mail address is sender@gmail.com, the SMTP host is smtp.gmail.com and the port 465. If the sender's e-mail address is sender@yahoo.com, the SMTP host is smtp.yahoomail.com and the port 25. Supposing I don't know this, is there any way to find this information using Java API classes? Please note that I'm new to java :) Thanks in advance, Andreea Thanks

What is standard for Interface naming in java api

由 感情迁移 提交于 2019-11-29 06:53:54
I am asked by one of colleague about the Throwable class in java API. As per standard, I do understand, every word ending *able is a interface in java API. There is a industry standard about using such words as Interface names. So, I unknowingly, told him about this as base interface for all the exception and error types in java world. Then he shows me the java file for this class. My questions: Why java people has choosen this name to be a class. I think this should have been a interface by default? Is this a pattern to use *able words as interface? Is there any other example of class ending

Off-Line Java API Documentation in Eclipse?

由 為{幸葍}努か 提交于 2019-11-29 03:19:34
问题 Is there an integration of any other off line way to get the Java API docs? 回答1: If you have no internet connection on your development machine, or if you want to stop the Web traffic for accessing the documentation, you can store the documentation on your local hard drive. Start your favorite Web browser and navigate to http://www.oracle.com/technetwork/java/javase/downloads/index.html#docs Find your desired documentation, accept the license agreement, and then click the link displayed under

Where is sun.misc.Unsafe documented? [closed]

由 二次信任 提交于 2019-11-27 00:13:03
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . Does anyone know of any comprehensive documentation for sun.misc.Unsafe ? I'm looking for documentation on Unsafe.putOrderedInt() . This was all I was able to find. public native void putOrderedInt(Object o, long offset, int x) Ordered/Lazy version of #putIntVolatile(Object, long, int) Does anyone know of a

Why does the Java API use int instead of short or byte?

由 扶醉桌前 提交于 2019-11-26 18:27:27
Why does the Java API use int , when short or even byte would be sufficient? Example: The DAY_OF_WEEK field in class Calendar uses int . If the difference is too minimal, then why do those datatypes ( short , int ) exist at all? Marco13 Some of the reasons have already been pointed out. For example, the fact that "...(Almost) All operations on byte, short will promote these primitives to int" . However, the obvious next question would be: WHY are these types promoted to int ? So to go one level deeper: The answer may simply be related to the Java Virtual Machine Instruction Set. As summarized

Examples of GoF Design Patterns in Java's core libraries

由 冷暖自知 提交于 2019-11-25 21:42:20
问题 I am learning GoF Java Design Patterns and I want to see some real life examples of them. What are some good examples of these Design Patterns in Java\'s core libraries? 回答1: You can find an overview of a lot of design patterns in Wikipedia. It also mentions which patterns are mentioned by GoF. I'll sum them up here and try to assign as many pattern implementations as possible, found in both the Java SE and Java EE APIs. Creational patterns Abstract factory (recognizeable by creational
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