Hibernate delayed loading error failed to lazily initialize a collection of Role
14:27:04Tags: J2EE
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Copyright:Original works. If you need to reprint them, please contact the author. Otherwise, legal liability
Previously, netbeans 5.5 was used, and the shortcut key is space. However, after the Simplified Chinese version of netbeans 6.0 is released recently, version 6.0 will be upgraded. After entering the abbreviation, I did not expand it by space. At
Upgrade JDK 5.0 Update 1 or 2 to customize and deploy WebServices-axis!
JDK 1.4.x is normal!However, when JDK 5.0 customizes and deploys WebServices-axis, run the following command:Java org. Apache. axis. Client. adminclient deploy. WSDDAlways
Dom4j is a Java xml api, similar to JDOM, used to read and write XML files. It features excellent performance, powerful functionality, and ease of use.
Jar package: dom4j-1.6.1.jar
XML file to be parsed: people. xml
XML Code
First,
/*** Change the map structure to list and change the list to map structure
* An object is an arbitrary object.* @ Author liutianfang* @ Version 2011-8-16 01:16:11 pm*/Public class mapobjectutil {/*** Change the data structure of the object type to
[Switch] New Features of jdk1.5
One important topic of "jdk1.5" is to simplify development by adding some features, including generics, for-each loops, automatic package installation/unpacking, enumeration, and variable parameters, static import.
1. Obtain the key value and then use the key to find the value.
Hashmap map = new hashmap ();
Set set = map. keyset ();
For (iterator it = set. iterator; it. hasnext ()){
String key = it. Next ();
String value = (string) map. Get (key );
}
2.
It is found that hashmap uses the following format to traverse the entire hashmap hashtable in a loop.
Each element in the returned set is of the map. Entry type.Java code private hashtable emails = new hashtable ();
// Method 1: entryset ()
/
Need to introduce a third-party jar package: dom4jPackage Test;import Java.io.file;import java.io.ioexception;import java.util.iterator;import org.dom4j.Attribute; Import Org.dom4j.document;import Org.dom4j.documentexception;import Org.dom4j.element;
Three map traversal methods!
A very important operation of the Set-traversal. I learned three traversal methods, each of which has its own advantages and disadvantages ~~
/** To change this template, choose tools | templates* And open the template
In the previous article, we discussed the vector declaration. Next, you will see the vector interface and implementation.
Class vector {
Public:
...
Iterator begin () {return start;} // return the beginning of vetorConst_iterator begin () const
Comparative use of LinkedHashMap and HashMap, linkedhashmap
I made a question yesterday, And hashmap always timed out. Later I looked at other people's shares and found that I could change HashMap to LinkedHashMap.
At the same time, it has the
How to import xml into a database by using JAVA
We know that there are many ways to import data into the database by inserting data into the database by importing xml into the database. In the past, the most commonly used method was to insert a
Http://blog.csdn.net/ruglcc/article/details/7921081
1. What is the C & C ++ standard library?When C language was invented, there were no library functions. With the popularity of C language, more and more vendors or organizations began to provide
AttributeDescription
BasedirCodeLocation
AbstractclassnameFormat: defines the naming rules for abstract classes.
PackagenameFormat: defines the naming rules for the package name.
TypenameFormat: defines the naming rules for classes and
Reprinted: http://topic.csdn.net/u/20110417/14/edcbbcd9-44f0-4175-a156-0231d12cba47.html
1. add, delete, and modify SIM card contactsUri is content: // ICC/ADN/The specific usage is the same as that of other contentprovider operations. For the
In a set operation, it is often impossible to traverse the set. In general, a foreach can be used to traverse the set. However, there are still some special requirements for traversing the stack, queue, and map types. I recently read some code,
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