Java
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Java – add some days for jodatime instant
I'm trying to write a simple utility method to add an integer day to joda time instant This is my first attempt /** *…… -
Java – disable all reports in Maven’s project info reports plugin
I want to generate custom reports through Maven's site plug-in, but only this custom report, instead of all reports ge…… -
Java – which is better when calling a function: twice or storing the result in a variable?
I doubted this problem many times, but I couldn't find the right solution I'll clear it this time I like something 1. …… -
Java – Android gets the PID of other applications
I want to be able to start an activity or service and get the PID of the process as soon as possible, which will be th…… -
Java – what does “reference implementation” mean?
I'm trying to learn the cachedrowset in Java, and I'm reading some tutorials about it for example Who can please be ki…… -
How do I catch all checked exceptions (in a single block) in Java?
Editor: this problem only involves Java 1.6 (and below) I'm sorry I didn't make it clear in the original post The hier…… -
Java – how can restful web services be better than soap based web services
I have experienced various websites, and the only answer they provide is – restful web services use HTTP's own methods…… -
How to wait for multiple nested asynchronous calls by using rxjava Android?
I'm new to RX Java. This is my situation, >Send request a and get the list < a > back > for each a, send r…… -
Java – add multiple jpprogressbars to the tablecolumn of JTable
I have added multiple jpprogressbars to the tablecolumn of JTable After some calculations, I'm updating all jpprogress…… -
Java – is there a way to expose hibernate entities as restful resources without dto?
I'm developing a simple webapp that exposes the domain model as a restful resource When grouping hibernate entities in…… -
Java – who calls the class initializer method and when?
I know that the new DUP, invocation and astere bytecode patterns will call the instance initialization method < ini…… -
Software testing tool – for Java
Can anyone list five software "software tests" in a java project? I need to learn 5. What do you recommend? Solution &…… -
Groovy equivalent of Java 8 lambda expression
I have only one method that has this java interface@ H_ 419_ 2@// Java Interface public interface AuditorAware { Audit…… -
What is the correct code pattern for completing transactions in Java (exception rollback and successful commit)?
I am looking for a common code pattern to correctly handle transactions that may be abnormal I assume that there is a …… -
Java – what happens when l (long) – = f (float)?
See English answers > floating point arithmetic not producing exact results 7 public class SimplePrint { public st…… -
Java: enumeration and if then else performance
I didn't have real luck. I used Google to get this concise answer rather than my time-consuming evaluation. I thought …… -
Java: look and feel
What happens when I use NetBeans on a Windows machine is that if I run the main java file, I get a different look than…… -
Java – how do I decide which bufferedimage image type to use?
The Java bufferedimage class has a long list of class variables called image types, which can be used as parameters of…… -
How do I synchronize from two processes – atomic writes on one file?
I have two processes. Each process writes big data buffer. I want to control the synchronization of these processes to…… -
Java – when should I use inputstreamreader and outputstreamwriter?
From the Java Tutorial site, we know that inputstreamreader and outputstreamwriter can convert streams between bytes a…… -
Java – hibernate criteriabuilder connects multiple tables
I'm trying to add four tables using hibernate criteriabuilder @Entity public class BuildDetails { @Id private …… -
Java concurrency JDK 1.6: is busy waiting better than signaling? Valid Java #51
Item 51 of Joshua Bloch's "effective Java" does not depend on the thread scheduler, nor does it unnecessarily retain t…… -
Why should a Java – 12 factor application be self-contained?
In the 12 factor article on Port Binding Solution To understand the rules for port binding and self-contained applicat…… -
Java – can you confuse code with unit tests?
I wanted to confuse our Java Web application code in our existing ant build script, but I encountered a problem with u…… -
Java – passing ArrayList to a separate class?
I have a code to read from the SQL database and save each column of information to the ArrayList I need to pass each A…… -
Java – does creating a new thread have the side effect of refreshing the cache?
I wonder if creating a new thread in Java will trigger a cache refresh Suppose I do this in the following order: >T…… -
Java: enumerating values () and valueof (string)
Why does javac add the value () and valueof (string) methods to the enumeration type being defined? Wouldn't it be bet…… -
Java – export jasperreports in HTML format
The following code gets a byte [] result, which is applicable to PDF and xlsx An exception was thrown for HTML JasperP…… -
Pass Java map to C method using swig
I have a method defined in C: std::map<std::string,std::string> validate( std…… -
Trace the Java / Android stack to a unique bucket
When a stack trace of unhandled exceptions is recorded in Java or Android (for example, through acra), the stack trace…… -
Java – how to create a generic type safe HashMap by class type?
See English answers > java map with values limited by key's type parameter5 Later, I want to pass the class type an…… -
Java – should I override the hashcode () of the collection?
Given that I have a number of courses that cover a variety of areas: class MyClass { private String s; private……