包含标签：Java 的文章
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Java – how to prevent the function passed to optional orelse from being executed when optional is not empty?
If I call a function from orelse, the function will be executed even if optional is not empty Is there any way to rest…… -
Java – use jodatime to calculate the month between the two dates of the holding year
I use this code to calculate the number of months between the input pastdate and CurrentDate It uses jodatime LocalDat…… -
Using Java and AES to encrypt large files
I tested my code with files below this value (10MB, 100MB, 500MB), and the encryption worked normally However, I encou…… -
Java – can I restart my application using main()?
I'm working on a way to restart my java application by clicking a button on the GUI I searched the Internet and encoun…… -
Java – does Python really create all binding methods for each new instance?
I'm reading the classes in python (3.4). According to my understanding, it seems that each new object has its own bind…… -
JPA – must be in the connectiondrivername property “how do I resolve it?” Specify the jdbc driver or datasource class name in
Overview: This is my first WebSphere 7 server & amp; JPA 1.0 & EJB & Derby database Second: This is persis…… -
Java – return files in spring MVC rest
I have the rest service code. The following code returns a file. Now the problem is that I get an original response in…… -
Construct unique numbers for strings in Java
We require more than 10 million strings to be read / written in the file In addition, we do not want duplicates in the…… -
Partition between integers in Java
I need to divide integers in Java, and the result should be a floating point number Can I use the / symbol? For exampl…… -
Java – use appbarlayout Behavior. Dragcallback to control the scrolling of the collapsed toolbar layout
I want to be able to enable and disable scrolling on the collapse toolbar Who can tell me how to use appbarlayout Beha…… -
Primitive data types and portability in Java
I quote Herbert Schildt's Chapter 3 data types, variables and arrays: What do his last two lines mean? How to specify …… -
Java – the problem of implementing removeAll for a custom object list
There is a scenario in my code where I need to compare two lists and delete the objects in the second list from the fi…… -
Java – get components from JList by clicking the location
How do I get components from JList by clicking on a location? I have my own list cell renderer, I insert some panels a…… -
Java – unable to load jdbc driver Why? (spring, dormancy)
I created a program (spring hibernate) through Maven two weeks ago, and now it has a problem loading the jdbc driver (…… -
Java – how do I configure the findbugs Maven plug-in to check only annotation violations such as @ nonnull?
I have implemented the answer to this question, so @ nonnull violation makes the build fail But the problem is, this i…… -
Java practice: returns the same object passed as a parameter
In the following code, isn't it bad that updatewithcontext returns an object with the same parameters? class SomeClass…… -
The problem of “while” in Java
I'm trying a few exercises in the Java programming book I have the following code: import java.io.*; import java.util.…… -
Java – why list Sort does not use the optional API
Java 8 introduces a new default method on the list interface to sort it Its signature is: void sort(Comparator<? su…… -
Java – buffered vs. unbuffered, which one is used?
Sorry, if this is repeated, but I can't find the exact answer to each type of best practice I want to know what is the…… -
Java – does FileInputStream already use buffers?
When I use FileInputStream to read an object (such as a few bytes), does the underlying operation involve: 1) Read the…… -
Java – spring 4 websocket remote proxy configuration
I managed to create a simple web socket application with spring 4 and stomp Please refer to my previous question here …… -
Java – start H2 database programmatically
I am writing a server - client application in Java. I need to implement a local database on the server. I decided to u…… -
Java – which data type or data structure to choose to calculate the factorial of 100?
I want to write a program to evaluate the factorial of a given integer The following basics I wrote the following code…… -
Is OOP – ORM a unique problem in object-oriented programming?
Object relational mapping (ORM) is a problem that must be solved in all applications that implement and use relational…… -
Java Sevlet Mapping. Welcome file list
On my web In the XML file, I have this <!-- WELCOME FILE LIST --> <welcome-file-list> <welcome-file…… -
Java – how many objects are created
I'm discussing how to use strings and stringbuffers in Java How many objects were created in each of these two example…… -
Java – how to put hover effect on JButton?
I'm trying to create a java desktop application. I use two buttons I want to add a hover effect to these buttons I thi…… -
Iterate over all byte values – 128-127 without Java casting
I need to traverse all byte values (- 128 to 127, including endpoints) I can use an int iterator, but I have to conver…… -
Java – Sax parsing and coding
One of my contacts encountered Sax problems parsing RSS and atom files According to him, it's like text from an item e…… -
How to convert a Java Date object to a jruby time object?
Using J ruby, is there a good way to convert Java date objects to jruby time objects? I'm using the latest version of …… -
Java – window builder Pro not found in eclipse indigo
I read that eclipse indigo installed the window builder Pro plug-in, but I can't see where it is File / new / project …… -
Java – error “unable to install project facet” when creating project?
I got the project from the repository, and according to the setup instructions, I tried to create a project in eclipse……