包含标签：Java 的文章
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Java – spring boot remote shell custom command
I tried to add a new custom command to the spring boot remote shell, but failed http://docs.spring.io/spring-boot/docs…… -
Java – why does overridepending transition not take effect when jumping from fragment to new activity?
The first activity contains a clip with a button inside. When I click this button, I want to jump to a new activity wi…… -
Java – spring MVC: should the service layer return dto specific operations?
In my spring MVC application, I use dto in the presentation layer to encapsulate the domain model in the service layer…… -
Java – create jar files from the command line
I have the following directory hierarchy: SigarTest src SigarTest .java files bin SigarTest .class…… -
Java – HttpServletRequest #getremoteaddr() returns null
Why HttpServletRequest Getremoteaddr() sometimes returns null? For about 2 identical requests, null is returned for no…… -
Java – base64encoder is an internal API and may be removed in future versions
See the English answer > how to avoid warning for the base 64? 2 code: public static String Encrypt(String Data) th…… -
Using SDK to develop mobile phone (Java) or not?
Recently, I have to use java to develop mobile phones. I plan to develop on the following brands: NOKIA Samsung Sony E…… -
Java – how do I run the play framework 2.1 project in IntelliJ?
I have an existing play 2.1 project I've been running it on the console and it works normally However, when I try to r…… -
Is the Java – quartz scheduler no longer applicable to spring since version 3.0?
Spring's internal scheduling function starts with spring 3, including support for cron type expressions, which is very…… -
Java – validate HTTP requests from signed jars
I am writing a client for my web application, and I signed the release jar with my developer certificate. How can I ve…… -
Java: read the image and display it as imageicon
I'm writing an application that reads and displays images with imageicons (in jlabel). The application needs to be abl…… -
Openid architecture for Java
I try to understand the concept and benefits of implementing openid in the project Moreover, since I am a java develop…… -
Memory leak using tensorflow for Java
The following test code leaks memory: private static final float[] X = new float[]{1,2,3,4,5,6,7,8,9,1,0}; public voi…… -
Does Sun’s hotspot JIT compiler automatically apply “final” to Java local variables?
I've heard of this, but I can't find a definite online resource to confirm it Background: a colleague likes to make hi…… -
Java – set the list parameter to native query
I want to set the parameter to local query, javax.persistence.EntityManager.createNativeQuery Such a thing @ h_ 419_ 5…… -
JavaFX removable pane system
This is what I like. I've seen it in several different software I don't know its origin or actual call content, but he…… -
java. Lang. IllegalStateException: assetmanager completed
I went to bed yesterday while my application was working, and today I couldn't start when I tried to run it Once I try…… -
Java – why Catalina home_ IS_ The undefined directory is generated by logback in the same project directory?
I wrote the logback configuration file for my application, but when I was doing Maven clean install (MVN clean install…… -
How do I use JNDI to pass parameters to an LDAP custom socket factory?
I am using JNDI to establish an LDAP connection Example: Hashtable env = new Hashtable(); env.put(Context.PROVIDER_URL…… -
Java – best practice for testing indexof return values
What do you usually write when testing the return value of indexof? if str.indexOf("a") < 0 VS if str.indexOf("a") …… -
Java – you cannot use expressions to increment byte values, but use the increment operator
See English answers > why byte + = 1 compile, but byte = byte + 1 not? 8 byte i=0; i++; The following is invalid by…… -
Strange behavior of Java scanner reading files
Therefore, I encountered an interesting problem when using the scanner class to read content from a file Basically, I'…… -
Java – what is the default temporaltype for temporal mapping keys without @ mapkeycolumn or @ mapkeytemporary annotations?
I am creating a JPA 2.0 annotation compliance kit for my internship I know that when you use @ mapkeycolumn to define …… -
ADO. Optimistic concurrency in net Entity Framework
I found that an MSDN article describes how EF handles concurrency when saving changes: I have two questions: >There…… -
Java – someone can explain spring security basepermission Create?
I'm developing a project involving spring security ACL, and I encountered creating permission basepermission CREATE. S…… -
Java – hibernate 5: generator class = “sequence” does not work properly
I have the following mappings: <id name="id" type="java.lang.Long" column="id"> <generator class="seq…… -
Java 9 repl for running applications
Java 9 introduced repl. Exe called jshell in the JDK distribution Is there any way to connect to the jshell of the JDK…… -
Criteria – multiple expressions in the JPA querybuilder where clause do not work
I'm using javax persistence. criteria. Criteriabuilder encountered a problem creating the query I am using eclipse lin…… -
Java – iterator of wildcard type variables with upper bound
Hello, I'm trying to extend HashMap < string, string > to enforce the "all lowercase" rule public class HttpQuer…… -
How to convert vectors in 1 row table in R
In R, I have a 1 - row table How do I convert it to a vector? Specifically, the table is as follows: 0 1 2 3 4 21…… -
Nutch: using java calls instead of the command line?
Am I thick or really unable to programmatically call Apache nutch through some java code? Where are the documents (or …… -
How to use java8 lambda expressions to throw exceptions for custom checks?
See English answers > java 8: lambda streams, filter by method with exception 13 private static void readStreamWith……