Java
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Java – abstract classes and interfaces together?
I have some code, some of which are implementing an interface It feels right, but there is a bit of repetition in chil…… -
Export excel file instance of Java data export function
Tables (reports) often need to be used in programming are mainly excel tables. The following is the method of writing …… -
Java converts object [] array to vector
What is the best way to convert an object array to a vector? JDE< 1.5 public Vector getListElements() { Vector my…… -
Java – creation of suffix array nlogn
I've been learning how to create suffix arrays. I understand that we first sort all suffixes according to the first ch…… -
How do I override methods in Java when I create objects through reflection?
In Java, can methods in classes created using reflection be overridden? For example, say I have the following classes:…… -
Java – serialize “Boolean” as “1” and “0” instead of “true” and “false”
No method was found in the Boolean class to serialize Boolean values to '1' and '0' instead of 'true' and 'false' Is t…… -
Graphic programmers must master 8 common sorting algorithms in Java
This article mainly introduces how Java implements eight common sorting algorithms: insert sort, bubble sort, select s…… -
Several steps of JDBC linking database
This article lists the four steps of JDBC linking database for your reference: JDBC: Java database access solution. Se…… -
Java – reader #lines() is very parallelized due to the non configurable batch size policy in its splicer
When the stream source is reader, I can't achieve good parallelization of stream processing Running the following code…… -
The Java implementation reads the file names of all files in the folder (including subdirectories)
In the process of programming, it is often used to read and write files. For example, find all the file names in a fol…… -
Java – arithmetic recursion
I am trying to write a code to calculate the following for a given integer n: 1/1 + 1/2 + 1/3 ... + 1/n This is the co…… -
Java uses deque to implement stack
This article illustrates how Java uses deque to implement stack. Share with you for your reference. The details are as…… -
Java method to determine whether a file is a binary file
This example describes the method of Java to judge whether a file is a binary file. Share with you for your reference.…… -
Java – a more precise numeric data type than double?
Is there a decimal number data type that is more accurate than double precision in Java? Solution Yes, use Java math. …… -
Java – how to control the order of bean init method in spring?
Suppose I have a bean, then I should call the init method or constructor after the init method of another bean Is it p…… -
Java implements eight common sorting algorithms: insert sort, bubble sort, select sort, Hill sort, etc
This paper implements eight common sorting algorithms: insert sort, bubble sort, selection sort, Hill sort, quick sort…… -
Java – how to add to BigDecimal
I have the following function, which iterates an array and calls a method on each 'return' object, which returns a Big…… -
Detailed explanation of string data type conversion in Java
In Java, string is the final class, and the provided string cannot be modified. String type is often used in projects.…… -
Java – the most efficient way to return common elements from two string arrays
In Java, what is the most effective way to return common elements from two string arrays? I can do it with a pair of f…… -
Method of quickly converting map into JSON format in Java
In daily use, we usually encounter map to JSON. If we traverse, it will waste a lot of time. In fact, we have such a j…… -
Specifying external fonts in JavaFX CSS
Can I use CSS to specify fonts in JavaFX applications? I have an fxml scenario and the corresponding CSS file In Java …… -
Java – create an array of methods
I'm designing a text - based adventure game for school progress I set each "level" as a class and each explorable area…… -
Implementation example of binary tree data structure in Java
Let's look at a specific exercise practice: The topic constructs a binary tree according to the pre order traversal se…… -
Java – spring batch reads jobs from multiple sources
How do I read items from multiple databases? I already know that this is a possible document ... <job id="readMulti…… -
Emberjs with Java rest backend
I'm working on Java (possibly Scala) for a project that will use ember and ember data I know I can write back ends to …… -
Java – understanding the future / threads
I tried to use futures for the first time It looks smart. You can cancel a job, but it doesn't work as expected In the…… -
Java implementation chain surface test questions
This note has been sorted out for a whole week. Each line of code is written by yourself, and the test run is successf…… -
Java – simple rest resource versioning in jax-rs based implementations?
The best practice of rest resource version control is to put the version information into the accept / content type he…… -
How does the prime test in Java work?
The following code snippet checks whether a given number is prime Can someone explain to me why? This code is to give …… -
Java – wicket 1.5 to 1.4
Compared with the latest version 1.4, what are the 1.5 new features of small portal? The first candidate will be annou…… -
Detailed explanation of HTTP communication using java
Overview of HTTP communication There are two main modes of HTTP communication: post mode and get mode. The former send…… -
Java – how to programmatically obtain jmap histograms?
I want to programmatically get the output equivalent to jmap histo from within the monitored application I see that bi……