包含标签：Java 的文章
-
Java – from application Properties spring boot read value
My spring launch application has the following application bindings > src >Main >Java > resources > app…… -
Switching cases with string Java
After using java for a long time, I found that, unlike other languages, Java does not support switch cases with string…… -
Java – how does Android set a string array to a single textview
I want to try setting the string array to the text of textview How can I do this? Here's what I've tried so far: Strin…… -
In Java, which is the most recommended class for dictionary data structures?
I need a data structure to store users that should be retrieved by ID Solution It may depend on how many users you pla…… -
Java – JPA / eclipse link – retrieve column names
I'm trying to update my java knowledge because I was last in 1.4 When used in version x... I'm trying to use 1.6 0, es…… -
Java – many methods that cover many classes in one class
public class EventController extends MouseAdapter implements ActionListener { public class EventController extends Mou…… -
Java – can I change the shape of JButton?
Can I change the shape of JButton from rectangle to circle? Solution I think this may be what you're looking for: http…… -
Java – “startswith” is faster than “indexof”?
I write code in Java to cycle through the dataset at the same time according to whether the string starts with some ch…… -
Java – about sorting algorithms applied to stacks and queues
I wonder why we always use sorting algorithms (such as insert sorting or merge sorting,...) only for lists and arrays?…… -
Why does Java require char variables to use single quotes?
Why does Java require char variables to contain anything in single quotes instead of double? An example: char s = 's';…… -
Java – when using thymeleaf, the spring security sessionscope appears to be null
When the login fails with spring security, it will throw an exception and display it in my JSP, as shown below: <c:…… -
Thread contention in Java
I want to know the following procedure If I call new readerthread() Start() it works normally, but if I call new reade…… -
Java inheritance problem
Suppose I extend a class and override the methods in that class What is wrong with calling rewriting from my new class…… -
Java – use system out. Println() creates a border
Anyway, has this arrangement been created, and no string variable SH3 affects the boundary? I'm really sorry that my k…… -
Remove the JFrame from the taskbar in Java
I made a quick theme look, but I didn't find anything similar My query is: how do I prevent child windows from appeari…… -
Java – why not always increase the operator’s work on chars?
Why char c = 5; int i = c++; However, this causes a compiler error (invalid arguments / –) for the operator: int i = a…… -
Java – JPA onetomany list cannot find mappedby attribute that should be inherited
We are currently making some requirements. We must add some similar entities (car pictures, pet pictures, holiday pict…… -
When a decimal point is given, the Java program crashes, but int is used
When the user enters an integer, the program runs smoothly, but when the user enters the last decimal number, the prog…… -
Java cannot find method main
I have a simple hello world plan trouble ha ha! I hope someone can understand this Therefore, the errors received are …… -
Polymorphism and interfaces in Java (you can use polymorphism to implement interfaces… Why?)
In the real world, what types of problems do people use it to solve? Can I see the sample code for these collaboration…… -
java. lang.ClassCastException：android. widget. LinearLayout $layoutparams cannot be cast to Android support. v7. widget. RecyclerView $LayoutParams
I have a recyclerview with LinearLayout LinearLayout consists of nine buttons Before making some changes, I can click …… -
Java cast to enum type problem
There were some problems converting Java long type to enum type, and a solution could not be found This is what I'm us…… -
Does Java contain a data type named “item”?
I'm reading the book algorithms. They mentioned the data type item However, I can't find it in any API Is there an "it…… -
Java – Maven spring boot multi module
I'm trying to configure Maven to use spring boot with multiple modules I'm new to Maven and spring boot stuff. I'm not…… -
Android websocket sockjs client of webserver based on Java spring
I am using spring 4.1 6. Release and my server are configured to use the websocket method based on sockjs and stomp pr…… -
Java – how to prevent the possibility of selecting specific columns in JTable?
I want to disable the possibility of selecting specific columns in JTable Using the defaultlistselectionmodel class, y…… -
Java – how to use jsoup to get hidden input values?
I have data <input name="authenticity_token" type="hidden" value="aiUlw1Yh4W47lPQearSEdTkU0rhKpziZOweq5PMTV0Q=" /&g…… -
Java – eofexception when reading files using objectinputstream
I have basically encountered a similar problem: eofexception in Java when reading objectinputstream, but I can't find …… -
Java – is there any way to restore Youtube API videos?
I'm using the Youtube API to write a simple application for Android – I want to realize the automatic recovery state o…… -
Inline comments in Java: / * * versus / *?
Why do I prefer to write inline comments in Java, as shown below: /** Init operation */ mindControlLaser.engage(); Ins…… -
Java – read the image from excel and store it in SQL server
I have a table called 'tab1' cl_id int //auto imcrement cl_image image I want to read the image in Excel from the imag…… -
Java: how to delete spaces in jformattedtextfield?
So I have a jformattedtextfield that lets users enter a number The number can be 1 to 99, so I used maskformatter ("##……