Java 归档 - Page 565 of 655

Java – JPA does not generate “on delete set null” FK restrictions

I have two related terms JPA notes Alarms and status An alarm can have a state What I need is to be able to delete a s……

Java

2019-05-21

Java – scanner and inputstreamreader

Does anyone happen to know the performance difference between the following two methods of reading input files? 1) Rea……

Java

2019-05-21

Java – just run unit tests. What source code has changed?

I run unit tests and selenium tests on Jenkins CI server As we all know, testing takes a long time to run in large pro……

Java

2019-05-21

Java – how to create a circle with numbers?

I'm using andengine to program Android games I want to create a circle with numbers, as shown in the figure below: Sol……

Java

2019-05-21

Java – running startup. Java in Linux SH rejected [closed]

I tried to run Tomcat 6 in Linux when I called startup SH, I'm in Catalina See this error in out /home/***/apache-tomc……

Java

2019-05-21

Java – hibernate Eclipse Plug-in

Anyone can provide a good Eclipse Plug-in for hibernate The plug - in should take care of generating POJO classes and ……

Java

2019-05-21

Java – when excel (. Xlsx) is converted to PDF (. PDF) using open office, there are missing worksheets and page size problems

I have created an application using jodconverter and open office to convert excel (. Xlsx) to PDF. The application wor……

Java

2019-05-20

Java – EJB and CDI and entity boundary control mode

I try to understand CDI and EJB and entity boundary control (ECB) patterns My understanding of ECB mode is that bounda……

Java

2019-05-20

Java – GC Optimization: for vs foreach

I've been trying to optimize some of my code and got a strange conclusion about fors In my test case, I created a new ……

Java

2019-05-20

What is the order in which initialization blocks and variable definitions are executed? (in Java)

I understand the order in which initialization occurs This is my hypothetical order: *Once per 1. Static variable……

Java

2019-05-20

Java – try to log in to XMPP server with smack result and “unauthorized” in SASL

I tried to log in to the XMPP server using smack When I try to log in, I receive the following error message: I have b……

Java

2019-05-20

Java – “when creating a simple RMI application,” ClassCastException: $proxy0 cannot be converted “error

I am creating my first very simple RMI client - server application This is the code: Interface "communication" package……

Java

2019-05-20

Java – how do I check the JDK version in oracle?

We have a Java class in Oracle database. Recently, an error was raised in a line of code in this class: static BASE64E……

Java

2019-05-20

Java – what happens when you look in a HashMap or HashSet when the object hashcode changes

In HashMap, the hash code of the provided key is used to put the value in the hash table In HashSet, hash codes are us……

Java

2019-05-20

What do comments in Java – IntelliJ source code mean?

When looking for the source code of the IntelliJ idea Community Edition project in GitHub, I found the following symbo……

Java

2019-05-20

Java – error upgrading Cordova application

For security reasons, I'm trying to get from Cordova 3.5 0 update a phone app to Cordova 5.1 one W/System.err( 1672): ……

Java

2019-05-20

Is declaring many of the same anonymous classes a waste of memory in Java?

I recently browsed the following code snippet in the current code base and added the comments you saw there I know thi……

Java

2019-05-20

java. sql. Timestamp comparison error?

See English answer > java sql. Timestamp created from java. util. Date,why always before() it? two Date d1 = new ja……

Java

2019-05-20

Java – add the click handler to the horizontalpanel in GWT

How to add a click handler to the horizontalpanel? It uses adddomhandler () in the newer version of GWT, but I had to ……

Java

2019-05-20

Java – establish a two to many relationship in JPA / hibernate

I have the following physical relationship issues The game must have two (only two) team objects "Team" can have many ……

Java

2019-05-20

Java – autocomplete jtextfield and arrow keys

I'm trying to use javax swing. JList builds a javax swing. Jtextfield, used for automatic completion, such as Google W……

Java

2019-05-20

Java – different “getdocumentelement” and “getfirstchild”

I have the following document objects – document MyDoc MyDoc holds an XML file myDoc = DocumentBuilderFactory.newInsta……

Java

2019-05-20

Java – always keep the mutable objects sorted in the TreeSet

I noticed that TreeSet does not keep mutable objects in sort order if the object property value changes later For exam……

Java

2019-05-20

Java – session variables in ServletRequest

I need to access session variables through a filter I don't even know if it's possible In fact, the problem comes from……

Java

2019-05-20

Java – I can do it without commons logging Using Apache httpclient in the case of jar

I'm trying to use Apache http client.asp in my project No logging for this application is required here So I can do it……

Java

2019-05-20

Java – get random elements from a sequence collection

I talked about an API and gave me a Java util. A collection of iterators This means I can iterate over it, but I can't……

Java

2019-05-20

Java – attempt to read NullPointerException of parcel string []

When I create an object from parcel, when I try to read back a string [], I get a NullPointerException This is my code……

Java

2019-05-20

How to calculate the file size from the URL in Java

I'm trying to get a bunch of PDF links from web services. I want to give users the file size of each link Is there any……

Java

2019-05-19

Java – will the result of modifying getter affect the object itself?

I have a question about using getter methods in Java My question is: Will the actual array list object be modified ("t……

Java

2019-05-19

Java – Android broadcastreceiver onReceive updates textview in mainactivity

In mainactivity, I have a textview: textv1 I also have a method in mainactivity to update the text view: public void u……

Java

2019-05-19

Java – Mozilla rhino tutorial

Any one can provide a good tutorial for Mozilla rhinoceros What I want to do is use JavaScript to validate the form in……

Java

2019-05-19

What is JMX Net equivalent?

Is there one Net is equivalent to monitoring and management - similar to JMX? Solution You can find it in codeplex (ne……

Java

2019-05-19

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Java – JPA does not generate “on delete set null” FK restrictions

Java – scanner and inputstreamreader

Java – just run unit tests. What source code has changed?

Java – how to create a circle with numbers?

Java – running startup. Java in Linux SH rejected [closed]

Java – hibernate Eclipse Plug-in

Java – when excel (. Xlsx) is converted to PDF (. PDF) using open office, there are missing worksheets and page size problems

Java – EJB and CDI and entity boundary control mode

Java – GC Optimization: for vs foreach

What is the order in which initialization blocks and variable definitions are executed? (in Java)

Java – try to log in to XMPP server with smack result and “unauthorized” in SASL

Java – “when creating a simple RMI application,” ClassCastException: $proxy0 cannot be converted “error

Java – how do I check the JDK version in oracle?

Java – what happens when you look in a HashMap or HashSet when the object hashcode changes

What do comments in Java – IntelliJ source code mean?

Java – error upgrading Cordova application

Is declaring many of the same anonymous classes a waste of memory in Java?

java. sql. Timestamp comparison error?

Java – add the click handler to the horizontalpanel in GWT

Java – establish a two to many relationship in JPA / hibernate

Java – autocomplete jtextfield and arrow keys

Java – different “getdocumentelement” and “getfirstchild”

Java – always keep the mutable objects sorted in the TreeSet

Java – session variables in ServletRequest

Java – I can do it without commons logging Using Apache httpclient in the case of jar

Java – get random elements from a sequence collection

Java – attempt to read NullPointerException of parcel string []

How to calculate the file size from the URL in Java

Java – will the result of modifying getter affect the object itself?

Java – Android broadcastreceiver onReceive updates textview in mainactivity

Java – Mozilla rhino tutorial

What is JMX Net equivalent?

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