包含标签：Java 的文章
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Java – does the applet not display at all?
OK, so I did a small applet tutorial. I read the init () method required to run the applet Such is the case. At least …… -
Entity Framework – Entity Framework 4.1: the navigation property ‘businessuser’ declared on the ‘Login’ type has configured the multiplicity of conflicts
I have two entities BusinessUser { Id(PK),Name,...} Login { BusinessUserID(PK,FK),Email,Password,etc...} The relation…… -
Exception of Java – propertymodel expression: org apache. wicket. Wicketruntimeexception: no get method defined for class:
I use propertymodel as part of dropdownchoice, as follows: List<String> choices = Arrays.asList(new String[] { "…… -
MVC in Java only needs to point in the right direction
I'm not a rookie in programming I have written in one language or another for 20 years Just not in Java My main langua…… -
Java – display buttons at specific coordinates
How do I display the (x, y) of a button or JButton window at a specific coordinate? Solution Although you can use setl…… -
java – MediaPlayer. Create() always returns null
I've used a media player before and I've never encountered this problem Whenever I try to use mediaplayer When create(…… -
Java error message “cannot resolve to variable”?
OK, so I have something new about Java. I'm trying to create a class that can ask the user to enter a 12 bit UPC code,…… -
The correct way to access read-only mapping synchronously in Java
I'm writing a simulation of the databaseconfiguration class, which reads the configuration from the database. I need s…… -
Elusive JAVA memory leak
I have a Java application based on lwjgl I render terrain with nine vertex buffers arranged in a 3 x 3 mesh When the c…… -
Java – can the modified quicksort be the best case of O (n)?
It is generally believed that the best case for quick sorting is O (nlogn), because each partition of the array is abo…… -
Java JPA implementation – how to read / set properties?
I'm reading the book beginning Java ee6 platform and GlassFish 3. I have some trouble understanding the access types o…… -
Java – how to dynamically add projects to listview in Android
Who can help me? I'm trying to create a listview in Android, and I'm trying to load the project into it using code (no…… -
The CTRL space completion of Java – Eclipse: main is no longer valid
I use eclipse (3.7.1), and I like Ctrl space autocompletion It was once used to generate static public void main (stri…… -
Java – how do you call the paint method in the Applet extension class?
I have two called paintme Java and starter Java class file import java.applet.Applet; import java.awt.*; public class…… -
Why are there exceptions to the following java code?
Why do I get exceptions Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to…… -
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…… -
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…… -
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……