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How many constructor arguments is too many?
...has been passed an illegal or inappropriate argument." see docs.oracle.com/javase/7/docs/api/java/lang/…)
– Grmpfhmbl
May 4 '17 at 13:27
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JPA : How to convert a native query result set to POJO class collection
... Only in JPA 2.1 a ConstructorResult has been added to map return values a java class.
Also, for OP's problem with getting count it should be enough to define a result set mapping with a single ColumnResult
share
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Why is processing a sorted array faster than processing an unsorted array?
...nchless - Random
seconds = 2.564
// Branchless - Sorted
seconds = 2.587
Java - NetBeans 7.1.1 JDK 7 - x64
// Branch - Random
seconds = 10.93293813
// Branch - Sorted
seconds = 5.643797077
// Branchless - Random
seconds = 3.113581453
// Branchless - Sorted
seconds = 3.186068823
Observation...
Logstash实践: 分布式系统的日志监控 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...满足多种需求。
3. Logstash的安装，搭建和配置
3.1. 安装Java
下载JDK压缩包。
一般解压到/user/local/下，形成/usr/local/jdk1.7.0_79/bin这种目录结构。
配置JAVA_HOME环境变量：echo 'export JAVA_HOME=/usr/local/jdk1.7.0_79' >> ~/.bashrc。
3.2 安装Logst...
No tests found with test runner 'JUnit 4'
My Java test worked well from Eclipse. But now, when I relaunch test from the run menu, I get the following message:
41 An...
Maven project.build.directory
...utDirectory>
<sourceDirectory>${project.basedir}/src/main/java</sourceDirectory>
<scriptSourceDirectory>src/main/scripts</scriptSourceDirectory>
<testSourceDirectory>${project.basedir}/src/test/java</testSourceDirectory>
<reso...
How do I test a private function or a class that has private methods, fields or inner classes?
...thods and fields for the sake of tests.
If you have somewhat of a legacy Java application, and you're not allowed to change the visibility of your methods, the best way to test private methods is to use reflection.
Internally we're using helpers to get/set private and private static variables as...
Android studio, gradle and NDK
...ains CLion plugin. I'm currently under the assumption that this will allow Java and C++ development from within Android Studio; however I think we'll still need to use the Gradle NDK section as I've stated above. Additionally, I think there will still be the need to write Java<->C++ wrapper fi...
Does a finally block always run?
Is there any condition where finally might not run in java? Thanks.
12 Answers
12
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Why is char[] preferred over String for passwords?
...
To quote an official document, the Java Cryptography Architecture guide says this about char[] vs. String passwords (about password-based encryption, but this is more generally about passwords of course):
It would seem logical to collect and store the pass...