LxLxBlog

Java – treemap deletes all keys larger than a key

In a project, I need to delete all objects whose key value is greater than a certain key (the key type is date, if imp……

Java

2020-08-29

Java – close a runnable joptionpane

I have this runnable window: EventQueue.invokelater(new Runnable(){ @Override public void run() { op =……

Java

2020-08-29

Java – libgdx actor draw overlay

I tried to override my player class, which extends the actor drawing method, but I received an error saying Why can't ……

Java

2020-08-29

Java – abstract classes return instances of private nested classes

I want an abstract class A Then I want a class B that can only be instantiated by A No one else can access B – only a ……

Java

2020-08-29

Java – calculate which side a line is on

I need to figure out how to calculate which side of a line I am looking for a very fast and simple collision algorithm……

Java

2020-08-29

Java – understanding abstract factory patterns

I've read about the abstract factory pattern on the wiki But I don't understand that using this model is really profit……

Java

2020-08-29

Java – implements class methods inherited from two interfaces with different return types

I have two interfaces and a class that implements them: interface A { int test(); } interface B { void test()……

Java

2020-08-29

Java – in a convertible cast, convert from t to double

I want to create a generic method to get the maximum value from an array But I met T and math Max method uses conversi……

Java

2020-08-29

Java – set block data from schematic in bukkit?

I tried to load and paste in bukkit Schematic file (not linked to mcedit API) Here are the functions / methods I use t……

Java

2020-08-29

Java – how to use selenium to record test cases in IE

I'm a beginner in selenium My application is only ie compatible I know that we can run test cases in any browser using……

Java

2020-08-29

Java – add directories to jars for inserting external jars or classes

I have a jar file, which is my application (built by gradle), and I want to add a directory. It is the "ext" folder of……

Java

2020-08-29

Is it effective to keep Java programs running indefinitely?

My program starts with main and starts some threads to execute the program work (reading sensors, updating databases, ……

Java

2020-08-29

Java – on event dispatch thread – want to leave it

Suppose I have methods that are sometimes called on the event dispatch thread, and sometimes not Now suppose I want so……

Java

2020-08-29

Java – how to make a cell non editable based on another cell value in an editable grid in GXT

Hi, I'm using GXT 2.2 3. Create an editable grid I created the following: List<String> eventList=new ArrayList&l……

Java

2020-08-29

Java – use drawLine to extend the graphics class (double, double, double, double)

Question: / / where the story begins You can see it's terrible Actual prototype: public abstract void drawLine (int x1……

Java

2020-08-29

Java – why does the swagger annotation generate API docs with a default path prefix

I use the Maven plug-in below to integrate swagger with my application I configured the following in my spring servlet……

Java

2020-08-29

Java decompiler and Java disassembler

I'm preparing the core Java. I have questions Is javap a disassembler or a decompiler? What's the difference between t……

Java

2020-08-29

Java – how to add data in a list item in Android

I am a new Android Developer I am developing a sample application I want to add some data to the object list My mainac……

Java

2020-08-29

Can Java throw an empty reference to an exception?

See the English answer > why can I throw null in Java? 7 try { .... } catch (MyException e){ /*Can e be nul……

Java

2020-08-29

Java – every environment configuration for Android

What solutions does Android provide for each environment configuration? In the web world, I'm used to c# having config……

Java

2020-08-29

Java – does programming with JDK 7 allow applications to run on JRE 6?

I program in eclipse I will never change eclipse's default compilation settings or anything else If JDK 7.0 is install……

Java

2020-08-29

Java – avoid checking exceptions

First of all, I strongly believe that the inspection clause and the unchecked exception are inaccurate because it desc……

Java

2020-08-29

Java – why does jsoup delete inline style sheets?

I use jsoup to protect my application from XSS attacks I get all the input parameters and do jsup clean. But I have a ……

Java

2020-08-29

Java – recursive method: why do I need a return statement?

Just to practice recursion, I wrote a classic introduction to recursion - a function that checks whether a given strin……

Java

2020-08-29

Java – why is the URL not fully decoded?

I'm writing a java program. My URL needs to be decoded. I'm using it URLDecoder.decode(url,"UTF-8") How to implement i……

Java

2020-08-29

Is it normal to put all Java Swing GUIs in one class?

I just started swing development and had problems Is it normal to put the whole GUI into a single class? The applicati……

Java

2020-08-29

Java – the functional interface of a generic method cannot be converted to a lambda expression

The functional interface of a generic method cannot be converted to a lambda expression public interface Pro{ publ……

Java

2020-08-29

Java – is this integration testing or unit testing?

It's not just a real case, it's the problem I encountered when trying to get the detailed difference between unit test……

Java

2020-08-29

Java – automatically connect to sleep interceptor

I'm extending hibernate Emptyinterceptor, in my implementation, I want to automatically connect to some services, but ……

Java

2020-08-29

Java swing – get hovering objects

I have a JList that wants to change the tooltip, depending on the hover item I tried to Google my question, but failed……

Java

2020-08-29

Is there an activity failure that occurs in concurrency in Java 8

I will try to reproduce the code mentioned in the following valid Java (Second Edition) public class StopThread { p……

Java

2020-08-29

Java – hibernate does not create tables – spring MVC

I have a spring project and I'm using hibernation When I started the project, DB didn't change I tried the difrenf con……

Java

2020-08-29

搜索内容

Java – treemap deletes all keys larger than a key

Java – close a runnable joptionpane

Java – libgdx actor draw overlay

Java – abstract classes return instances of private nested classes

Java – calculate which side a line is on

Java – understanding abstract factory patterns

Java – implements class methods inherited from two interfaces with different return types

Java – in a convertible cast, convert from t to double

Java – set block data from schematic in bukkit?

Java – how to use selenium to record test cases in IE

Java – add directories to jars for inserting external jars or classes

Is it effective to keep Java programs running indefinitely?

Java – on event dispatch thread – want to leave it

Java – how to make a cell non editable based on another cell value in an editable grid in GXT

Java – use drawLine to extend the graphics class (double, double, double, double)

Java – why does the swagger annotation generate API docs with a default path prefix

Java decompiler and Java disassembler

Java – how to add data in a list item in Android

Can Java throw an empty reference to an exception?

Java – every environment configuration for Android

Java – does programming with JDK 7 allow applications to run on JRE 6?

Java – avoid checking exceptions

Java – why does jsoup delete inline style sheets?

Java – recursive method: why do I need a return statement?

Java – why is the URL not fully decoded?

Is it normal to put all Java Swing GUIs in one class?

Java – the functional interface of a generic method cannot be converted to a lambda expression

Java – is this integration testing or unit testing?

Java – automatically connect to sleep interceptor

Java swing – get hovering objects

Is there an activity failure that occurs in concurrency in Java 8

Java – hibernate does not create tables – spring MVC

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