Java
-
Java – change the shape of the scatter point
I have thousands of points on JfreeChart's scatter chart //* I'm using shapeutilities, but when I use xyitemrenderer /…… -
Java – fileoutputstream: does the “close” method also call “flush”?
I really care about the flush and close methods In my code, I always close my fileoutputstream object But I want to kn…… -
Java – hibernate – forces container resource cleanup when a transaction completes
After several queries are executed, I get the following message from Hibernate: HHH000106: Forcing container resource …… -
Java – use Apache POI to thicken the entire line
I'm using Apache POI's HSSF workbook to write data into an Excel spreadsheet I want a whole line bold Can anyone sugge…… -
Download and write files using retrofit and rxjava
I'm downloading a modified PDF file. The way I download it is block I use the content range header to get a byte range…… -
Java array list problem
I have the following java code, int a[] = new int[] {20,30} ; List lis = Arrays.asList(a) ; System.out.print(lis.conta…… -
Java – how to disable echo when sending terminal commands using Apache commons net telnetclient
So, I have this class using org apache. commons. net. telnet. Telnetclient class It attempts to send a command and rea…… -
Java – what is dot casting?
In this Code: c = (char)(c - 'A' + 'a'); Why do we need a char? Is that foundry right? Suppose that C on the right sid…… -
Java – is it effective to handle runtimeexceptions in some cases?
As I have understood from several tutorials, runtimeexceptions should not actually be caught because they should revea…… -
Java – Android canvas does not draw path. When the point of path is not present
I encountered some problems with Android canvas when drawing the path canvas.drawPath(polyPath,borderPaint); I also ha…… -
Java – struts 2 “%” and “#” login to ognl
Can someone tell me how to use the "%" and "#" numbers in Struts2 ognl? I'm around Google, but I can't find any valuab…… -
Java – Android: the sampling microphone does not record to obtain real-time amplitude / level?
I'm trying to get the microphone amplitude level on Android: MediaRecorder recorder = new MediaRecorder(); recorder.se…… -
GUI architecture and design in Java (swing)
I spent the last few hours searching the Internet for examples and ideas on how to write medium-sized GUIs in Java I k…… -
Differences between Java and Hibernate types: Boolean, yes_ no,true_ false
When to use? What do they map in the database? Solution From Hibernate: -
Java – reflections illegalargumentexception reason
Update – make the problem clearer ClassCastException exception may be caused when calling a method through reflection?…… -
Java – how to check whether a key in a map starts with a given string value
I am looking for a way, such as: myMap.containsKeyStartingWith("abc"); // returns true if there's a key starting with …… -
Java – ImageView, why is it different in size?
First of all, I know many people have asked the same question, but the question is almost the same, but I have more qu…… -
Java lightweight soap Client Library
Can anyone recommend a good java open source library to build a simple soap web service client? I'm looking for someth…… -
Java – validationexception: unable to find default provider
I found three entries in the stack overflow: javax. validation. ValidationException: Unable to find default provider j…… -
File I / O: read from one file and write to another (Java)
I'm currently working in a lab in my CPE class. We have to create a simple program from Txt file and print them to dif…… -
Java – non null attributes refer to null or instantaneous values of persistent values
I try to use JPA 1 to persist two different entities and use hibernate to implement it Parent entity class @Entity @Ta…… -
Java – is BigInteger thread secure?
I need to update the global BigInteger value through multiple threads – is BigInteger thread safe? Solution BigInteger…… -
Java – how to improve applications to avoid heap space problems
I have an application that works with many custom objects created in methods and never needs to be outside of them The…… -
Java – converting from double to int does not always just discard the decimal part
I'm experimenting with the code I found here the Java specialties' newsletter public class MeaningOfLife { public st…… -
How to install Java 7 EE SDK and download it as Mac OSX SH file
I'm new to developing Java on Mac OS X I want to download the Java 7 EE SDK so that I can use Java for desktop / mobil…… -
Java – register all classes annotated with @ myannotation
I have an annotation @ myannotation, which I can use to annotate any type (class) Then I have a class named annotatedc…… -
Can datastex Java drivers be safely used in EE containers?
com. datastax. driver. core. The documentation for the session class illustrates this However, the general recommendat…… -
String – replace strsubstitute with JRE Library
I'm currently using org apache. commons. lang.text. Strsubstitute: Map m = ... substitutor = new StrSubstitutor(m); r…… -
Java – Oracle driver memory leak – Tomcat
We are using tomcat-7.0 33. Spring 3.0. 1 and JPA use Tomcat JNDI data source Using ojdbc6 Oracle 10g. Jar (latest) ba…… -
Java – Maven: no source compilation
I'm following "building Java projects with Maven"（ https://spring.io/guides/gs/maven/#scratch ）, when I run 'MVN com…… -
Nested enumeration in Java?
I want to define some enumerations for the various Ajax services provided in my web application, such as: Enum Service…… -
What happens if you use deprecated methods / functions in Java?
Any problems with using deprecated features in Java? If so, why keep this function? Is it a bad habit to use disapprov……