包含标签：Java 的文章
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Java – how do I set up the eclipse editor screen and package browser view?
In fact, I came up with a problem I hadn't encountered in a long time When working on projects, I often see my package…… -
Tooltip background (using JavaFX CSS)
Simple question, but I can't find the answer anywhere (I don't think I know what to look for...) How to prevent my too…… -
Java – if I increase the memory heap, it will increase GC time
My current application runs on a normal GC cycle with 2GB of memory I want to increase JVM memory to 4GB to improve ap…… -
Java – interfaces and abstract classes
I'm a little familiar with the difference between abstract and interface classes, but Solution The fields in the inter…… -
How to unpack streamex as a “normal old Java stream”?
Streamex is a powerful library, but sometimes I no longer need its superpower How can I get rid of streamex internal e…… -
Java – cursorindexoutofboundexception: request index 1, size 1
This is me again. There is a SQLite problem with Android At present, I get a "cursor index out of boundary exception: …… -
Can @ unique () be executed inside Java in xpages?
When I want a unique key for a file, I prefer @ unique() I like it based on user name and time Is there any way to get…… -
Use the for loop to traverse the list in Java
How to use index to iterate list data structure For example, consider a list sentence where each element is a word Can…… -
Java – converts jtextfield input to integer
I'm a novice in Java. I'm trying to convert the input from jtextfield to an integer. I've tried many options, but ther…… -
Generating XML from classes using java
I asked this question before: Generate XML from a class I want to do this in Java Can I perform the same operation on …… -
Java – cannot find files using FileReader
I'm developing a project for my course. We should read one called samplesearch Txt file, the following is the code I a…… -
java – Reflection Class. Forname() looks for classes $1 and $2. What are they?
See English answers > java compiled classes contain dollar signs When checking the string input userinput, see if a…… -
I got Java lang.NoClassDefFoundError：org / springframework / web / context / WebApplicationContext
I added spring - web. Net to my classpath 4.0. jar. It contains the class – org springframework. web. context. WebAppl…… -
Java – use hibernate envers to find recently deleted entities
So my problem is that I need to find all recently deleted entities of a specific class, that is, entities deleted sinc…… -
java. lang.UnsatisfiedLinkError：java. library. There is no sqljdbc in path_ auth
I created a Java application Jar when I try to run from CMD Jar, I received an error I've been looking for and finding…… -
Java – how to improve this singleton?
I have a class that will be single MySingleton. getInstance(theFile); Files are required only when building a singleto…… -
How do I call other methods of the Java runnable object?
I got some skeletons of classes I had to implement (I personally don't really agree with the program design, but I don…… -
Java – recursively find the object and return null after finding it
I have created a recursive method to find jcomponents by name This method looks for the correct component, but it retu…… -
Java’s fastest hash function
I have a Boolean string with a length of 128 characters (such as "01100.. 001") (indicating that 128 numbers are 0 / 1…… -
What is the best way to print multidimensional arrays in Java?
I recently started the mutltidimensional int array in Java Until then, one - dimensional arrays are enough Print those…… -
java – ArrayList> to String [] []
It looks like a JTable construct, like string []]... But I like to use smarter containers until I have to use somethin…… -
Where is the Union () method of the Java – spark dataframe class?
I am using Spark's Java connector and want to combine two dataframes, but the strange thing is that the dataframe clas…… -
Java – method. Java is called when a parameter in an array invoke()
I have the following interfaces: interface Foo { void bar(String a,int b); } I want to call foo reflexively Bar (on …… -
Java – how do I find all the first indexes in a string?
I use this source: String fulltext = "I would like to create a book reader have create,create "; String subtext = "c…… -
When Java calculates a conjunction (\ u0026 \ u0026), if Exp1 is false, does it Eval exp2?
I want to know whether to ensure that in Java programs, as long as the expression on the left (Exp1) evaluates to fals…… -
Java – predicate method equals()
I'm using the interface predict < T > from com google. common. base(Google Guava) But I don't know how to make t…… -
NetBeans – how to use the scenario builder to create image buttons on Java fxml?
I'm using NetBeans and want to replace boring buttons with media files on my desktop So this is my code I want it, so …… -
Java – why can’t we create an instance of the collections class (not the collection interface)?
Collections is a public class, and then we can call its implicit default constructor It has no private constructor, wh…… -
Java – HashMap containskey complexity
I have a method. I write a duplicate item in the list It works well, but I'm worried about the complexity of using con…… -
Java calculator with multiple operations
So far, I have the following working normally I'm sure there may be a simpler way to do this, but what I need to chang…… -
Java – advantages of locking API synchronization
Every blog or explanation I see the advantages of locks API over synchronization I want to know what the advantages of…… -
Java – how to add a jlabel image hover?
How do I continue to add jlabel hover? Just like when you move the mouse to the top, jlabel A and the new image will o……