java lang exception

Today, we use middlegen to generate HBM for hibernate. XML and java files. After the graphical interface is displayed, click the "generate" button and throw the "Java. lang. the incompatibleclasschangeerror error is confusing. Baidu looked at it and it seems that there are like-minded people, just like me, who successfully generated HBM when they were used for th

Problem: The shared variable simpledateformat is used in the multithreading method, and the following error is returned: Java. Lang. numberformatexception: multiple pointsAt sun. Misc. floatingdecimal. readjavaformatstring (floatingdecimal. Java: 1084 Cause:Simpledateformat is thread-insecure and should not be avoided! Solution: New simpledateformat (); Example

07-12 07:34:04. 411: Warn/system. Err (533): Java. Lang. illegalstateexception: Database not open07-12 07:34:04. 440: Warn/system. Err (533): At android.database.sqlite.sqlitedatabase.exe csql (sqlitedatabase. Java: 1759) These two rows are error messages OnCode. However, database not open is reported this time. This problem has not occurred before. After chec

Depressing: when calling JNI, there will always be // 08-14 10:26:28. 734: Error/androidruntime (30101): Java. Lang. unsatisfiedlinkerror: writecmd After a morning, I finally couldn't help it. I asked in the group that I had made a mistake. I compiled a. h file, not a. c file .... Tragedy. Call the JNI step, 1. Write the Java and native methods and call the Li

Package java. Lang; /**** Use methods that inherit this interface to use the thread mechanism. The run method will be called by the thread,* This method defines the actual operations of threads. The purpose of using this interface is to increase flexibility,* Java only supports one parent class, but multiple interfaces can be implemented.* This eliminates the ne

During download, the file can be correctly downloaded, but an error is always reported. Java. Lang. illegalstateexception: getoutputstream () has already been called for this response Solution:Outside the scope of java scripts (that is, outside the scope of CodeCharacters such as space, carriage return, or line feed cannot be correctly downloaded if any. If you

The Android program depends on a Library program B. The requirements for converting formatted json strings to standard json strings are used in program B. Public static String jsonFormatter (String uglyJSONString) {Gson gson = new GsonBuilder (). setPrettyPrinting (). create (); JsonParser jp = new JsonParser (); JsonElement je = jp. parse (uglyJSONString); String prettyJsonString = gson. toJson (je); return prettyJsonString ;} However, in the Android program

Recently, when writing a test script in Groovy, a problem occurs. In Groovy 1.5.7, groovy reads a built-in dom Processing Package (org. w3c. dom), and groovy script used in the watij library contains the xml-apis.jar conflict, because the version is not the same. The following error is reported: Caught: java. lang. LinkageError: loader constraint violation: loader (instance of After checking the informat

ViewPager is used for projects over the past few days, because it can achieve the effect of moving multiple pages left and right, and then When ListView is used on each page, "PagerAdapter java. lang. IllegalStateException" is always displayed during runtime: The specified child already has a parent. You must call removeView ()... "causes The program to end. Displayed on PagerAdapter during debugging: @ Ove

Package java. Lang. Ref; /*** Reference queue** Comment by liqiang** @ Version 1.20, 01/23/03* @ Author Mark Reinhold* @ SINCE 1.2*/ Public class referencequeue { /*** Constructor*/Public referencequeue (){} // A static internal class used to generate a non-queue or queued flag. This class has no queuing capability.Private Static class null extends referencequeue {Boolean enqueue (reference R ){Return false

In executionCode: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Long. parselong (datacolumn [0]. Trim ()) The following exception occurs: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Java. Lang. numberformatexception: for input string:"11"

Document directory Environment Problem Solution Environment JBoss 6.0 + myeclipse 8.6 + MySQL 5.1 + Struts 2.3 + EJB 3.0 Problem The following exception occurs when JBoss is started: Java. Lang. noclassdeffounderror: ORG/hornetq/API/CORE/client/clientsession Solution Check whether the struts jar package version is correct. My EJB project uses jar files such

The following exception is thrown every time Query query = session. createQuery (hql) is executed: Java. lang. NoSuchMethodError: anlr. collections. AST. getLine () I Whether the two jar packages in the project are conflicted: antlr-2.7.6.jar and anltr-2.7.2.jar. If there is, just remove the anltr-2.7.2.jar package.The reason for smooth execution in the main

Error: cocould not find medialib accelerator Wrapper Classes. Continuing in pure JAva mode.Occurs in: COM. Sun. Media. Jai. mlib. medialibaccessorJava. Lang. noclassdeffounderror: COM/Sun/medialib/mlib/Image The solution to this exception is to modify a parameter in the Catalina. BAT file. Set java_opts = % java_opts %-djava. util. logging. manager = org. a

Today, when we tested the results during this period, we found an exception: Which is normal when switching the landscape screen, but from the cross-cutting to the portrait screen is thrown: 11-30 03:35:58. 661: Error/androidruntime (1264 ): Java. Lang. illegalargumentexception: view not attached to window manager is abnormal. The current activity is a dat

During the image verification code last night, the verification code was successfully generated, but an exception was thrown: Java. Lang. illegalstateexception: getoutputstream () has already been call for this response Haha, the error status must be when the output stream is closed and the statements are still output to the page. After reading the verificatio

The cause of this error is that it is not added to the manifest. xml file. Android: Name = "com. Athena. www. Common. myapplication" This sentence Make sure to write the name correctly. If a write error occurs Java. Lang. classnotfoundexception in Android:* **. *** In loader Dalvik. system. pathclassloader If the above error occurs, you can check whether the name is wrong in manifest. xml.

When codegen1.3 plug-in is used to generate code from the WSDL, an error "An error occurred while completing process-java. Lang. Reflect. invocationtargetexception" occurs. There are two common causes for this error: first, disable eclipse. Note that two errors may occur simultaneously. 1. The jar package is missing. Copy the "geronimo-stax-api_1.0_spec-1.0.1.jar" and "backport-util-concurrent-3.1.jar" fil

The following error occurs when you use ibatis to query data: Java. Lang. instantiationexception: COM. Mangocity. Contract. EJB. roomtype, which literally means the. roomtype class cannot be instantiated. The roomtype class is used to encapsulate the query results. Each instance represents a query record. The following is a snippet of my ibatis configuration file: Select A. Upload _id as upload ID, A. r

The current apps are all like the popular ones. As long as they are added, the last small app has the chat function, the sharing function, and the camera function, with the voice function ......, If it is powerful enough (or there is a ready-to-use code on the Internet), his mother almost made an operating system. Some of these functions need to be used by third parties. This involves a third-party choice. I generally do not like the products of small companies, rather than look down on small c