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Java. Lang. exceptionininitializererror
Initialization program error. Thrown when an exception occurs during the execution of a class static initialization program. Static initialization programs are static statement segments directly included in the class.
Java. Lang. illeg
source code. If classpath is not specified or an error is specified when you run the Java program, the virtual machine cannot find the correct path, and thus the java. Lang. noclassdeffounderror: exception in thread "Main" error occurs. Therefore, when such a similar proble
Java. lang. OutOfMemoryError
Cause:The following are common examples:
1. The amount of data loaded in the memory is too large, such as extracting too much data from the database at a time;
2. There are references to objects in the Collection class, which are not cleared after use, so that JVM cannot be recycled;
3. There are endless loops or loops in the code that generate too many repeated object entities
From: http://hi.baidu.com/cjxgotofly/blog/item/ef981434e2e112355ab5f55f.html
Java. Lang. outofmemoryerrorTroubleshooting
Cause:The following are common examples:
1. The amount of data loaded in the memory is too large, such as extracting too much data from the database at a time;
2. There are references to objects in the Collection class, which are not cleared after use, so that JVM cannot be
Http://blog.csdn.net/jxzxm1_2/article/details/2499751
An exception occurs when a Java program is used to query a large amount of data from the database:Java. Lang. outofmemoryerror: Java heap SpaceThis exception is thrown if 98% is used for GC and the available heap size is less than 2% in JVM.JVM heap setting refers to the setting of memory space that JVM can a
When I started my computer at work in the morning, I found a problem with the application startup. The prompt was: Java. Lang. noclassdeffounderror: javax/transaction/transactionmanager. So I googled it and it turned out to be missing JTA. jar. It's strange that it was good. Why is it missing today? Is there a problem with eclipse.
JTA. jar:
1, http://java.sun.com/products/jta/ download class files, and th
tab. The following two items are displayed: initial memory pool and maximum memory pool. initial memory pool: memory size set for initialization. Maximum memory pool: The maximum memory size. Set the initial memory pool to 64 mb .!!! Success !!! After the configuration is complete, press OK and restart tomcat. You will find that the JVM available memory in Tomcat has changed (anyoneking). Take the Tomcat environment as an example. Other Web servers, such as JBoss, webLogic is the same principle
Java. Lang. noclassdeffounderror Solution
(01:14:03)
Reprinted
Javanoclassdeffound
Take the simple and classic "helloworld. Java" as an Example
Helloworld. Java without package Layers
Public class helloworld
{
Public static void main (string [] ARGs)
{
System. Out. println ("Hello world! ");
}
}
. loadClassInternal (ClassLoader. java: 320)
... 20 more
Problem: jboss jar package not introduced
Solution: Introduce the jboss-common.jar package
If an error is reported after the jboss-common.jar package is introduced
Java. lang. NoClassDefFoundError: org/apache/commons/logging/LogFactoryAt org. hibernate. ej
Why JAVA. Lang. unsatisfiedlinkerror: CC error occurs in the 2ee engine (11:03:29)
Tags: Report software report Tool Web report software download it wishful report
Category: Basic Concepts
Java. Lang. unsatisfiedlinkerror is displayed on the "run JSP Report
Error cause returned when one Actiivty enters another Actiivty: because the target Activity's permission is not changed to publicclass *** ActivityFATALEXCEPTION: mainjava. lang. RuntimeException: UnabletoinstantiateactivityComponentInfo {com. duguang
Error cause returned when one Actiivty enters another Actiivty: because the target Activity has the permission no
Take the tomcat environment as an example. Other WEB servers, such as jboss and weblogic, share the same principle.1. java. lang. OutOfMemoryError: PermGen spacePermGen space stands for Permanent Generation space, which is the Permanent storage area of the memory,This memory is mainly used by JVM to store Class and Meta information. When the Class is loaded, it will be placed in PermGen space,Unlike the Hea
Take the simple and classic "helloworld. Java" as an Example
Helloworld. Java without package Layers
Public class helloworld
{
Public static void main (string [] ARGs)
{
System. Out. println ("Hello world! ");
}
}
Save it in E: \ Java \ SRC and change the current path to: e: \ Java \ SRC under the command line. Compile
From: http://babyblue2004.bokee.com/5733663.html
I read an article (http://www.eclipse.org/webtools/jsf/dev_resource/JSFTutorial-RC3/JSFTools_tutorial.html) at www.eclipse.org over the past few days, following the above as a JSF program. The following problems occur:
Severe: error loading webappclassloaderDelegate: falseRepositories:/WEB-INF/classes/----------> Parent classloader:Org. Apache. Catalina. loader. standardclassloader @ 184ec44Javax. Faces
The root cause of this problem is that the default heap size of the JVM virtual machine is 64 MB, which can be achieved by setting the maximum and minimum values. There are several ways to set the heap size.
1. You can add java_opts =-xms64m-xmx512m to change the system environment variable in windows.
2. If Tomcat is used, in windows, add: e: \ Program Files \ apache-Tomcat-6.0.29 \ bin \ Catalina. BAT:
Set java_opts =-xms512m-xmx512m
The location is added to the row REM guess catali
Recently running hadoopProgram, Encountered two problems:
1. outofmemoryerror in hadoop
Error: Unable to create new Native thread error initializing attempt_2011100000003_0013_r_000000_0: Java. lang. outofmemoryerror: Unable to create new Native thread at java.
Java. Lang. outofmemoryerror: Java heap space and its processing
During development, JavaProgramAn exception occurred when querying a large amount of data from the database:Java. Lang. outofmemoryerror: Java heap Space
This exception is thrown if 98% is used for GC and t
For details about java. lang. UnsupportedClassVersionError -- Linux general technology-Linux programming and kernel, refer to the following. Run a simple Servlet under Fedora 8 and the following error occurs:
CODE: type Exception reportMessageDescription The server encountered an internal error () that p
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