包含标签：Java 的文章
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Database – when using JPA, avoid stale data from DB?
The problem I encountered is similar to that described in the invaliding JPA entitymanager session: Problem: getting s…… -
The Java class file was not created in the classes folder
I am compiling a java program with the following command: Ironically, the generated class file is created in the same …… -
Running Axis2 v.1. With JRE 5 / 6 6.2 what jars are needed to generate the client?
Which jars in the Axis2 distribution (version 1.6.2) are required to run the generated WebService client? There are se…… -
Java – “equality test with Boolean text” – test the difference between Boolean values and usage==
See English answers > Boolean checking in the 'if' condition 10 For this Code: boolean valid; if(valid == true) You…… -
Java – get question mark when inserting Hebrew characters into MySQL table
I am using NetBeans, using java to build web applications, and JSP uses Hebrew fields to process databases DDL is as f…… -
Java – add timeout function to swingworker
I will have to implement some functions for my application soon, timeout according to the length specified by the user…… -
Java JTree directory structure from file path
I've been trying to solve this problem, so maybe some of you can help me I have a list of files and their full paths (…… -
Java – camel CBR and POJO attribute check
I have a camel route for the order instance: from("direct:start") .choice() .when(order.getProduct() == Pr…… -
Java – no class loaded Jdbc driver for forname
Oracle JDBC tutorial says But when I delete class Forname, it will give the error no driver found I am using the Ojdbc…… -
Java – GWT error: requestfactory validationtool must be run
Every time I start my application, even if it is not executed listempty@R_444_2419 @ES (), an error "requestfactory va…… -
Java – need help writing numbers in reverse order
I got help with the task I don't ask anyone to do my job, but I really honestly insist on how to do it I should write …… -
Java EE – Java EE – search the web XML general specification
I'm new to Java EE I found web XML is a standard file (deployment descriptor) used by many servlet container / applica…… -
Java – creates an ArrayList on each index of the list
I have a list like this public List<String>[] Depth_List; Now in each index of this list, I want to create and A…… -
Java – a non recursive method for calculating a binary tree representing an arithmetic expression
As mentioned in the topic, I need to describe a method for evaluating binary arithmetic expression trees without recur…… -
Java – Best Practices for string instantiation
So why don't we use 'new' to create them? 14 In addition, whenever you want to instantiate a string object, do not use…… -
Gregorian calendar returns an incorrect day in Java_ OF_ WEEK
This Code: Calendar calendar; calendar = GregorianCalendar.getInstance(); calendar.set(year,month,day); week_day = cal…… -
How do I convert strings to operators in Java?
See English answers > is it possible to pass arithmetic operators to a method in Java? 8 import java.io.*; import j…… -
Java – jtextfield listener when modifying textfield text
I know how to add a text listener on jtextfield, trigger when the text changes, and modify the text of jtextfield duri…… -
Java – playframework module and routing
I use play! Frame 1.2 five I have a module 'business model' In conf / routes: I have a controller: package controllers…… -
Java temporary file multithreaded application
I'm looking for a simple way to generate a temporary file that always ends with a unique name on a per JVM basis Basic…… -
Java – how do I change the contents of the JScrollPane significantly each time I call the actionlistener?
Every time I call the action listener, I want the JScrollPane to change its list to a completely different list I'm no…… -
What is the difference between JPDA and JMX?
I'm trying to write an application monitoring tool, and I met two standards, JPDA and JMX They seem a bit like me Any …… -
Java – use JTable to display the slow performance of streaming data
The code I referenced is proprietary and requires a multicast server, so I cannot publish sscce code snippets I unders…… -
Java – create domain in Amazon simpledb
I'm using Amazon simpledb and trying to create a database using the following tutorial Basically, it throws an error: …… -
Adding properties from Java to groovy objects
I want to be able to add properties to an instance of a string object using the metaprogramming capabilities of groovy…… -
Java – Android VM heap size
I can't understand what Android App heap size is Runtime rt = Runtime.getRuntime(); long maxMemory = rt.maxMemory(); L…… -
Java – how do I know at run time if a jar file already exists in the classpath?
If a particular jar file is already in my classpath, what is the best way to know at run time? If this is not the case…… -
Run java code after method returns?
I have a web service based on Java classes Whether the code can be run after the confirmation message is returned in t…… -
Java – Android loadermanager confused with cursorloader
I tried to convert my Android application to use loadermanager and cursorloader Basically, I have a SQLite database wi…… -
Java – how do I get all singleton instances from Guice injector?
Is there a simple way to enumerate all singleton instances that Guice injector has created? Or another way to get all …… -
Java: match regex and replace each character
I have a string, for example: There exists a word *random*. Random will be a random word How to replace each random ch……