包含标签：Java 的文章
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Java – is there a case where the abstract class is better than the interface
I have a scenario in which several subclasses have similar implementations and some additional methods, and the implem…… -
Java instance: supertypes and subtypes seem equal? How to accurately test type?
If an instance completely belongs to a given type, I need to test it However, if the subtype is tested as a supertype,…… -
Get Java classes from multiple wsdls
I have a maven project where I need to generate Java classes from multiple WSDL files I have checked this link: http:/…… -
Java – use a specific pattern to format an instant as a string
I'm trying to format instant as a string using a specific format According to the question of format instant to string…… -
Java – stores serializable objects in the database
I'm writing an application that needs to write objects to the database For simplicity, I want to serialize objects But…… -
Java – regular expression in spring controller
I'm trying to build a request filter that will only be used if it matches the pattern of the letter E and then a numbe…… -
Add package to Java project structure
I've been working on a local project, and sometimes I hand it over to someone else The question is: is there another w…… -
How to hide the pannable scroll bar in JavaFX?
I created a pannable scrollpane Now I want to hide the bar to the right of the scroll bar .scroll-bar:horizontal .incr…… -
Java – GWT, how eclipse plug-ins integrate projects with gwt. Rename with XML file? An error occurs when trying to do this
I spent some time searching on it, and everything I found seems to have nothing to do with my problem I'm making an RP…… -
Java – scan tree structure from bottom to top?
If the following tree structure or similar structure is given: I want to return the string zyxwvut I know how to do th…… -
Java heap dump error – Metadata does not appear to be polymorphic
When I try to get a heap dump from a running java process, I get this stacktrace What is the cause and what must I do …… -
Debugging – using GlassFish 3.0 1 and NetBeans 6.9 JPA 2.0 for 1 (recording and tracking)
I'm in GlassFish v3 0.1 and NetBeans 6.9 JPA 2.0 (eclipse link provider) is used in 1, and queries and other logging i…… -
Java – using Jersey’s dependency injection
If I use Jersey 1.12, and I have multiple resource classes, and they all need to access some shared context, what is t…… -
How do I group vectors into vector lists?
I have some data that looks like this (such as false data): dressId color 6 yellow 9 …… -
Java – libgdx: set another screen, but still the button activated from the old screen
In my libgdx game, I have 2 screens, menus and lists But when I click the same location (from the menu screen where th…… -
New to Java – what are JPA and Dao?
I'm new to Java and I'm trying to create a web project using a servlet I was taught to do this: >Create class com p…… -
Kotlin for deconstruction, quadruple, quintuple, etc
I am looking for a clean way to create destructible objects online kotlin. Pair and kotlin Triple covers many use case…… -
Java gridbaglayout anchor
Learn gridbaglayout. The problem here is the name and label com@R_950_2419 @It does not appear at the top of the panel…… -
How does immutability of Java strings increase security?
I am a novice in Java. When learning, I found that a string is immutable While I was reading the reasons behind it, th…… -
Java – “received fatal alert when deploying to sonatype: bad_record_mac”
Try deploying to the sonatype repository (sometimes!) When, I get this stack trace: javax.net.ssl.SSLException: Receiv…… -
Java – a protected member accessed in a derived class using a base class instance
I created an instance of the base class in a derived class and tried to access protected members I can directly access…… -
Java – position in the lower right corner of the screen
I need to put JFrame on the screen But I can't make them appear on the right side at the bottom of the screen Please h…… -
How do I compare a joda datetime object with an acceptable offset (tolerance)?
I wonder if there is any standard API in jodatime to compare 2 datetime objects with specified tolerance? Ideally, it …… -
Java – string conversion
I have a method that accepts string parameters In some cases, I want to pass the int value to this method For calling …… -
Validating a certificate in Java throws an exception – a valid certificate path for the requested target cannot be found
I have a web application that requires the client to send its certificate. The server must verify the certificate (tha…… -
Java – standard JPA 2 and 3 tables
I'm trying to create a condition to retrieve some objects from three tables (Association, update and detail) Details r…… -
Java – how to create a splash screen for the GUI?
Hello, I'm a novice in Java and try to make the flash screen or image display for 3 seconds Then it will enter my main…… -
What is the class loader in Java?
What does this mean when a customer says in Java that "code should not have a custom class loader"? What can't I do? S…… -
Java RSA encryption
I tried to encode a simple string "test" back and forth public static String encode(Key publicKey,String data) throws …… -
Java – no credit card processing for Google Checkout / Amazon / paypal
If I want to process payment directly instead of through Google / Amazon / paypal, what should I do? Is there a Java A…… -
Java – use IntelliJ to set breakpoints in gradle projects
Now that IntelliJ 12.1 is out, I want to be able to attach the debugger to the 'gradle run' application and stop it at…… -
Java – Google drive SDK activity exception not found
I'm trying to implement Stephen Wylie's Google drive example (here) This is my code: package com.googledrive.googledri……