Java 归档 - Page 303 of 655

Java – when there is more data, the Jasper report exports empty data in PDF format

I have a report exported in Excel, PDF and word using Jasper report I use the XML file as the data source of the repor……

Java

2020-02-22

Multithreading – reentry locking: advantages and disadvantages?

Under what circumstances do people want to use turn back locks and ordinary locks? Solution I think reentrant locks ha……

Java

2020-02-22

Java – manage JAXB generated classes in the Maven project

I have a maven based project in which I try to add some JAXB classes automatically generated by the "jaxb2 Maven plugi……

Java

2020-02-22

How to in Weblogic 10 Enable JMX on X

I have a JMX enabled application It has its own JMX proxy and some MBeans When I start an application in Weblogic, I c……

Java

2020-02-22

RX Java – the difference between interval() and repeatwhen() for polling from observable in the interval

What is the difference between: Observable<String> observable = Observable .interval(0,1,TimeUnit.SECOND……

Java

2020-02-22

How to avoid memory waste when storing UTF – 8 characters (8 bits) in Java characters (16 bits) two-in-one?

I'm afraid I have questions about the details of a rather over saturated topic. I searched a lot, but I can't find a c……

Java

2020-02-22

Java – string tokenizer: separate strings with commas and ignore commas with double quotes

I have a string like the following – If I mark the string above, I get comma separated marks But I want to use the str……

Java

2020-02-22

Java – JDBC batch execution is extremely slow

Anyone can tell me what I did wrong. I execute 350 plug-ins in MySQL and it takes 40 seconds This is the code long t0 ……

Java

2020-02-22

Java – how is this eclipse view formed?

I am developing an eclipse plug-in, which will add a new context menu. When clicked, a dialog box will pop up, and use……

Java

2020-02-22

Java – use workflow engine, state machine engine or scroll myself?

I'm confused I am developing an internal tool based on Grails for my company One component of this tool is a simple pr……

Java

2020-02-22

Java – bad practice – the class defines CompareTo (…) and uses object equals()

Want to know what needs to be done with the listed methods public final int compareTo(final FieldDTO o) { retu……

Java

2020-02-22

JSF – integer gets the default value 0, which needs to be null in Java

See English answer > H: inputtext which is bound to integer property is submitting value 0 instead of null1 All I n……

Java

2020-02-22

How to use Java math Commons curvefitter?

How do I fit a function to a set of data using math Commons curvefitter? I was told to use curvefitter with Levenberg ……

Java

2020-02-22

Comment – @ singleton in Java EJB

I have an EJB that needs to be single and stateful because it will become a connection pool My question is: >If I d……

Java

2020-02-22

Java – why does filesystemxmlapplicationcontext throw FileNotFoundException on existing files

resolvent

Java

2020-02-22

Java – spring boot: how to reference application. In @ importresource properties

My spring boot application has an ApplicationContext XML file In this file, it has an attribute placeholder – ${profil……

Java

2020-02-22

Java / Hibernate uses interfaces on entities

I'm using annotated hibernate, and I wonder if it's possible I have to set up a series of interfaces representing obje……

Java

2020-02-21

Java – validate postscript without trying to print it?

Saving data to postscript in my application will generate a postscript file that I can view in ghostview without probl……

Java

2020-02-21

Java – is the tight loop broken?

Isn't the tight loop in the program bad? I have an application with a two - threaded game physics simulator Updategame……

Java

2020-02-21

Java – using the Interpreter pattern on a composite structure

I was asked to use composite, recursive descendant parser and interpreter for expression evaluation This is the syntax……

Java

2020-02-21

Are there any Java libraries to use SVG is converted to Png or Jpg code?

Are there any Java libraries to use SVG is converted to Png or Jpg code? Does anyone have this experience? Solution Sp……

Java

2020-02-21

Java – you can programmatically access the current heroku dyno ID / name?

On heroku, can you get some identifier of dyno currently executing code from the program through the program? For exam……

Java

2020-02-21

Java – use ‘debugunreturnedconnectionstacktraces’ to debug connection loss

I am trying to solve the connection timeout problem of my ongoing project We use c3p0 to manage connection pool and Hi……

Java

2020-02-21

Java thread dump: blocked thread does not have “wait lock…”

It is difficult for me to understand the thread dump obtained from jstack for spring MVC web applications running on T……

Java

2020-02-21

Java – convert dtmmanagerdefault to ClassCastException of dtmmanager during maven JAXB CodeGen

I encountered a strange problem when trying to run a maven build of JAXB CodeGen using the jaxb2 plug-in (see stacktra……

Java

2020-02-21

Java – htmlunit – convert htmlpage to HTML string?

I'm using htmlunit to generate HTML for various pages, but now, the best way I can put the page into the original HTML……

Java

2020-02-21

Java – sort an array of file names containing numeric strings

For my project, I need to download a zip file from the FTP server. I can publish a new zip about 13 times a year I nee……

Java

2020-02-21

What is java actually?

I work in selenium. This problem is more specific to Java than selenium The example I provided is selenium webdriver e……

Java

2020-02-21

Java double. MAX_ VALUE？

Hello, I was in my first year of computing system development, so I am very new to Java and have mastered the basic kn……

Java

2020-02-21

Decrypt encrypted assertions using SAML 2.0 in Java using opensaml

There was a problem trying to decrypt encrypted assertions using SAML 2.0 The library I use is opensaml Java library 2……

Java

2020-02-21

Java – play framework 2.4 does not accept “public static results” from controllers

I try to start the application using play framework 2.4 and JDK 8 in MAC when I use/ When the activator downloads the ……

Java

2020-02-21

String. Is format (. Net) equivalent in Java?

. Net Format (maybe just VB. Net) converts {0}, {1},... To a determined string, for example: Dim St As String = "Test:……

Java

2020-02-21

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Java – when there is more data, the Jasper report exports empty data in PDF format

Multithreading – reentry locking: advantages and disadvantages?

Java – manage JAXB generated classes in the Maven project

How to in Weblogic 10 Enable JMX on X

RX Java – the difference between interval() and repeatwhen() for polling from observable in the interval

How to avoid memory waste when storing UTF – 8 characters (8 bits) in Java characters (16 bits) two-in-one?

Java – string tokenizer: separate strings with commas and ignore commas with double quotes

Java – JDBC batch execution is extremely slow

Java – how is this eclipse view formed?

Java – use workflow engine, state machine engine or scroll myself?

Java – bad practice – the class defines CompareTo (…) and uses object equals()

JSF – integer gets the default value 0, which needs to be null in Java

How to use Java math Commons curvefitter?

Comment – @ singleton in Java EJB

Java – why does filesystemxmlapplicationcontext throw FileNotFoundException on existing files

Java – spring boot: how to reference application. In @ importresource properties

Java / Hibernate uses interfaces on entities

Java – validate postscript without trying to print it?

Java – is the tight loop broken?

Java – using the Interpreter pattern on a composite structure

Are there any Java libraries to use SVG is converted to Png or Jpg code?

Java – you can programmatically access the current heroku dyno ID / name?

Java – use ‘debugunreturnedconnectionstacktraces’ to debug connection loss

Java thread dump: blocked thread does not have “wait lock…”

Java – convert dtmmanagerdefault to ClassCastException of dtmmanager during maven JAXB CodeGen

Java – htmlunit – convert htmlpage to HTML string?

Java – sort an array of file names containing numeric strings

What is java actually?

Java double. MAX_ VALUE？

Decrypt encrypted assertions using SAML 2.0 in Java using opensaml

Java – play framework 2.4 does not accept “public static results” from controllers

String. Is format (. Net) equivalent in Java?

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