包含标签：Java 的文章
-
What’s the difference between DART’s snapshot and Java bytecode?
I've been reading dart snapshots, which are often compared with Smalltalk images But to me, they sound like Java bytec…… -
Java – what are the disadvantages of using Lucene?
I am considering using Lucene for very fast search in my project I know Lucene has created its own file, which holds a…… -
Java – excel cell format in jasperreport Report
I'm studying the jasperreport report that generates Excel files For some reason, my cell format / type is not how they…… -
Java – use logback to mask passwords?
At present, we usually record all XML documents in and out of the system, some of which contain explicit passwords We …… -
Java – no code is executed without a print statement
See English answer > loop doesn't see changed value without a print statement1 package main; import java.awt.FlowL…… -
java – Map. Is containskey () useful?
See English answer > is using java map containsKey() redundant when using map. Get() 6 Map myMap .... if myMap.cont…… -
Java – why use IOException instead of exception when capturing?
I can't seem to say this correctly. Search engines can get any meaningful results try{ BufferedReader reader = new…… -
How do I detect if a string contains any right to left characters?
I'm trying to create a method to detect strings written from right to left in Java I came up with this question to do …… -
Java converts GIF images to PNG format
I have to build a java servlet to receive images and return images converted to PNG format How can I do this? Thank yo…… -
Java – how do I rotate a rectangle in libgdx?
I rotate my sprites 90 degrees. I want to do the same for my rectangles so that they can be used for collisions, but t…… -
Java – use the ‘super’ keyword when accessing non overridden superclass methods
I've tried to get inheritance rights in Java and have learned that when overriding methods (and hidden fields) in subc…… -
Java – how do I get the method name from this method?
I tried to create a function that returns the method name from this method: public static String getmethodName(final i…… -
How do I replace a string in Java that contains dot?
I need to replace the string that contains spaces and periods I tried the following code: String customerName = "Mr. R…… -
Java – how to group / classify a large number of JUnit tests
In our project, we currently have a large number of JUnit tests, which are divided into three categories: unit, integr…… -
Bitshifting using BigIntegers in Java
I am using BigIntegers to implement DES encryption in Java I execute BigInteger The leftshift (int n) method shifts th…… -
Java – set reference = null in the finally block?
One of my colleagues set null in the finally block I think this is nonsense public Something getSomething() { JDBC…… -
Java – how to check if a class exists
Is there a static method of 'class' that can tell us whether the user input class (in the form of string) is a valid e…… -
Java – change the app name in eclipse
I finished my quiz application a few days ago Now, I want to release a second quiz with different questions I copied t…… -
Are the following incremental code threads safe in Java?
Java code: public class IncreaseTest { public static int value = 0; public synchronized int increment() { …… -
java. lang.Math. Is pi equal to m of GCC_ PI？
I have written several reference algorithms in Java and C / C + + Some of these algorithms use π I want two implementa…… -
Email template library in Java
I know that there is a library called FreeMarker that can create email templates for Java Do you think this library is…… -
Java – how JPA adds a unique constraint on the column of the @ onetomany relationship, for example, on the user name
I have a class website representing websites and class users The site can have multiple users class Site { privat…… -
How to parse this JSON response in Java
I want to parse these JSON responses: { "MyResponse": { "count": 3,"listTsm": [{ "id": "b90c6218-73c8-30bd…… -
Java – multiplication overflow of two ints results in negative numbers
Consider this fragment in the Java language specification class Test { public static void main(String[] args) { …… -
Java – why is char implicitly converted to byte (and short) primitives and when should it not?
Some features of the compiler puzzled me (using Oracle JDK 1.7 of eclipse) Therefore, I have this book that char primi…… -
How to use xwpftable in POI to merge cells (or apply colSpan) in Java?
Creating a table in POI is very simple, but its tutorial is very limited. I can't find a simple merged cell in the tab…… -
Java – cookie domain contains dot?
I use GWT's cookies class to generate cookies When I use the following Cookies.setCookie(LOGIN_COOKIE_NAME,value,expir…… -
Java – how to get latitude and longitude information from a picture
How to obtain longitude and latitude information from the picture storage in the device or SD card? Solution I found a…… -
Java – httpclient publishing progress and multipartentitybuilder
I tried using httpclient 4.3 3 and multipartytybuilder achieve progress when uploading files So I actually execute a p…… -
How to use Apache math 3.0 to generate bin of histogram in Java?
I've been looking for using Apache common math 3.0 to generate dustbins for specific data sets (by specifying low freq…… -
Accessing inherited class variables in Java
If you inherit from activities that declare certain member variables, how do you access them in subclasses that perfor…… -
Java – convert iso8859 string to utf8? Ä Ö Ü = > Ã why?
What's wrong with this code? I made an iso8859 string Therefore, most of them are krypooutput No problem. But how do y……