Java 归档 - Page 348 of 655

Java – ormlite – how to create objects and populate external collections?

I'm trying to create an object and populate the members of the external collection held by the object in an operation ……

Java

2020-01-23

Java – how to set the canvas size?

I have a class called seatspanel. I draw seats in the OnDraw method (using drawRect) The OnDraw method uses canvas as ……

Java

2020-01-23

Java server faces: validate only in the business logic layer

I have a java server faces web application and I'm not sure how to handle validation In my opinion, validation should ……

Java

2020-01-23

java – Spring @Resource Handling

I'm at @ L_ 502_ There was a problem with the field annotated @ resource in the 0 @ bean Yes) I have: A field with set……

Java

2020-01-23

Java – number of recorders used

I am working with a very large Java application using log4j, and I wonder if there is a way to extract the number of a……

Java

2020-01-23

Use java to read files from the serial port

I'm a beginner in Java. I'm writing ("flash") GetBytes () like this to serialport Before I put flash_ After OK as a re……

Java

2020-01-23

Get the file creator / owner attribute in Java

I'm trying to read the file list and find the user who created the file With the * Nix system, you can perform similar……

Java

2020-01-23

Java – understand the order of elements in the stream generated from the HashSet

I read this official JAVA 8 document: Try to understand the above behavior through this code public class StreamOrderV……

Java

2020-01-23

Java Swing Mac OSX Preferences menu

I'm trying to add the Preferences menu to my java swing application, which proves a little disgusting I've read a lot ……

Java

2020-01-23

Java – unit testing of methods that use mockito to call multiple other methods

Maybe I didn't do it at all in the search, but I can't find any documentation or discussion about how to write unit te……

Java

2020-01-23

Java – exact sum of long arrays

To get the exact sum of long [], I am using the following code snippet public static BigInteger sum(long[] a) { lo……

Java

2020-01-23

Java – CTR mode uses initial vector (IV)

As far as I know, CTR mode does not use initial vectors Other block cipher modes, such as CBC, XOR plaintext using ini……

Java

2020-01-23

Java – Concurrent HashMap: check size

Concurrent HashMap can solve the synchronization problem seen in HashMap Therefore, if we work with a synchronization ……

Java

2020-01-23

How to understand whether behvior will use static or dynamic binding in Java?

I understand at a low level what static (compile time) and dynamic (run time) bindings are I understand in a way why i……

Java

2020-01-23

Fonts – extract geometry from font

I want to be able to extract the geometry of each letter in the TrueType font file Each letter has a set of coordinate……

Java

2020-01-23

How to extend Jython class in Java class

resolvent

Java

2020-01-23

Share_ PTR is used with swig directors for Java

I began to understand swig. It seems that the latest version of swig (V3.0) can only handle all the contents I use out……

Java

2020-01-23

Spring batch differences between multithreading and partitioning

I can't understand the difference between multithreading and partitioning in spring batch processing The implementatio……

Java

2020-01-23

Java – anyone can explain tools to me The functionality of jar (which is tied to the JDK / lib folder) and why does it need it?

I'm in Java Encountered tools in so Jar file, want to know what it is used for? I searched a lot, but I couldn't find ……

Java

2020-01-23

Java – a schema that uses JDBC to connect to different databases

I am writing an application that must be configurable to connect to Oracle, SQL server and MySQL according to the idea……

Java

2020-01-23

Java – create Maven project, unable to parse prototype, reject connection

I suspect I have Maven agency problems When I create a new project: 1) File – > New – > Maven project 2) I choos……

Java

2020-01-23

Java – when the difference between methods is a parameter subtype, null is passed to the overriding method

See English answer > which overload will get selected for null in Java? 3 Why does the virtual machine call this me……

Java

2020-01-23

Generate UML from Java source

Because I have a big project, I have to generate UML for it Writing UML for 300 classes is excessive So is there any s……

Java

2020-01-23

Java – exception thrown when connecting to JMX server in spring!

So when I try to connect to JMX from jconsole, I get this exception: Caused by: java.rmi.ConnectException: Connection ……

Java

2020-01-23

Java – is there a way to force eclipse to automatically clean up every run?

I'm developing and using eclipse to create an APK for Android, which also has an APK with C code So file My problem is……

Java

2020-01-22

Java – deserialization with @ jsonsubtypes without value – missing attribute error

I deserialize jsons like this: { "type":"a","payload" : {...} } The type of payload depends on the type My class: pu……

Java

2020-01-22

Java: disk based fast hash set

I need to store a large hash set that can contain up to 200 million 40 bit values It is acceptable to store it as a va……

Java

2020-01-22

The difference between kotlin and Java string is separate from regex

If we have a Val TXT: kotlin String =“1; 2; 3;” And like to split it into digital arrays, we can try the following met……

Java

2020-01-22

Using selenium 2.0 webdriver in practice

I want to write selenium test cases in JUnit and test my project in multiple browsers. I want to take advantage of the……

Java

2020-01-22

Java – clean up projects and regenerate class files in eclipse

After I cleaned up a project in eclipse, I didn't see the class file generated in the output folder "bin". Although th……

Java

2020-01-22

Java – design problem: Reservation System

I have to design and implement a reservation system for the hotel I have >Array list of reservation Objects > ar……

Java

2020-01-22

Use the new standard javax JSON serializes POJOs into JSON

I like the idea of using JSON serialization standard in Java, javax JSON is a big step forward. You can create an obje……

Java

2020-01-22

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Java – ormlite – how to create objects and populate external collections?

Java – how to set the canvas size?

Java server faces: validate only in the business logic layer

java – Spring @Resource Handling

Java – number of recorders used

Use java to read files from the serial port

Get the file creator / owner attribute in Java

Java – understand the order of elements in the stream generated from the HashSet

Java Swing Mac OSX Preferences menu

Java – unit testing of methods that use mockito to call multiple other methods

Java – exact sum of long arrays

Java – CTR mode uses initial vector (IV)

Java – Concurrent HashMap: check size

How to understand whether behvior will use static or dynamic binding in Java?

Fonts – extract geometry from font

How to extend Jython class in Java class

Share_ PTR is used with swig directors for Java

Spring batch differences between multithreading and partitioning

Java – anyone can explain tools to me The functionality of jar (which is tied to the JDK / lib folder) and why does it need it?

Java – a schema that uses JDBC to connect to different databases

Java – create Maven project, unable to parse prototype, reject connection

Java – when the difference between methods is a parameter subtype, null is passed to the overriding method

Generate UML from Java source

Java – exception thrown when connecting to JMX server in spring!

Java – is there a way to force eclipse to automatically clean up every run?

Java – deserialization with @ jsonsubtypes without value – missing attribute error

Java: disk based fast hash set

The difference between kotlin and Java string is separate from regex

Using selenium 2.0 webdriver in practice

Java – clean up projects and regenerate class files in eclipse

Java – design problem: Reservation System

Use the new standard javax JSON serializes POJOs into JSON

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