java lang illegalstateexception

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

Package java. Lang. Reflect; Import sun. Reflect. constructoraccessor;Import sun. Reflect. reflection; /*** Indicates the object of the constructor.** Comment by liqiang** @ Author kenth Russell* @ Author nakul saraiya*/Public finalClass constructor extends accessibleobject implements member { // Declare the class object of this ConstructorPrivate class clazz;Private int slot;// Parameter list ArrayPrivate

Package java. Lang. Reflect; /**** Comment by liqiang** @ Author Peter Jones**/Public interface invocationhandler { /**** The proxy must inherit this interface. When the proxy class calls an interface method, it will go to this method.* The actual implementation method is called using reflection in this method, but other methods can be called before or after this method* Implement a proxy mechanism, such

Package java. Lang. Reflect; Import sun. Reflect. methodaccessor;Import sun. Reflect. reflection; /**** Description method class** Note that the reflection method is first adopted* Class. getmethod (string name, class [] parametertypes) obtains a method object.* String indicates the method name, And parametertypes indicates the type of each parameter in the parameter list.* The method object in the class ob

Today, when I was working on struts, I encountered the java. Lang. nullpointerexception: module 'null' not found error. I was depressed for a long time, The Web. xml file is not configured./WEB-INF/struts-config2.xml If this problem occurs, try this method! It is inconvenient to change eclipse, and it is inconvenient to find the struts plug-in 3.1.2. I still think JBuilder is good...

Java. lang. NoClassDefFoundError: ognl/PropertyAccessor solution, ognl expression I didn't want to write a special article for this article, but I found that no one answered such a simple question. From the perspective of convenient search, I took this question specially. In fact, the solution is to add the jar package of ognl. For example, I use ognl3.0.6, as shown in: Struts2 cannot run. There is a p

Recently, I am working on an e-book project to bring together the open-source shelves + ireader page flip and curl. I encountered the following problems when doing the curl effect: Java. Lang. Unsupported operation exception, Android. View. gles20canvas. clippath (gles20canvas... The omnipotent Gu Ge told me that this is a hardware acceleration problem, but I have never enabled hardware acceleration. I did

Today, we have an appwidget. To determine the WiFi and Bluetooth statuses, it takes some time to change the process status. Therefore, we need to open a thread to determine and then update the interface. A thread is opened directly to call the UPDATE function in the thread. Unfortunately, an error is prompted when you click Add appwidget for the first time. Java. Lang. runtimeexception: can't create handl

Actually. I made a mistake when calling a function at the DaO layer. I called myself. A java. Lang. stackoverflowerror error occurs in the recently executed project. After a long time, I also asked experts and checked information. Finally, the problem is solved! Special record! Stackoverflowerror is because the current thread's stack is fullWhich is caused by too many function call levels. For example

The external android project is imported to ecplise. The compilation is normal and an error is returned. The logcat is as follows: 12-19 10:55:25. 915: E/AndroidRuntime (2929): fatal exception: main12-19 10:55:25. 915: E/AndroidRuntime (2929): java. lang. noClassDefFoundError: com. guet. siriCN. mainActivity $1 www.2cto. com12-19 10:55:25. 915: E/AndroidRuntime (2929): at com. XXX. mainActivity.

We are integrating perf4j and javasimon Code When I found some problems, that is, I was running good things in my own test code. When I put it in the project code, I always reported the following error :... caused by: Java. lang. illegalargumentexception: superclass has no null constructors but no arguments were given... compared with the code, spring beans with constructor parameters are not found in your

An exception is thrown when you use javamail to send an email: Java. Lang. securityexception: sha1 digest error for COM/Sun/mail/SMTP/smtptransport. Class I am depressed for a long time, and finally found two problems 1. import all jar files in the project (this is not enough. It can be sent at this time, but an exception will always be reported. For the solution, refer to article 2. add all jar files to

The header is finally fixed A backend management system developed based on Struts + hibernate. The functions include complete permission management and information publishing functions.Development Environment: eclipse3.01 + myeclipse3.84 When importing a project to eclipse3.1.1 + myeclipse4.1.x, the system always prompts "the type of Java. Lang. object cannot be parsed. Indirectly referenced it from the r

In a project, the anlr component is required to import the antlr-2.7.2.jar from the Lib of struts 2. After running, the following error is prompted: Java. Lang. nosuchmethoderror: anlr. Collections. Ast. Getline () I So I guess the AST in version 2.7.2 does not use the Getline method. Please try an anlr of a higher version. Import the antlr-2.7.6.jar from the Lib of hibernate 3, and the above error no l

After installing Oracle 10 Gb, run em and the interface is displayed, but an error is reported: Java. Lang. Exception: exception in sending request: NULL Many functions are not available, prompting you to log on again Solution: Find the following file $ ORACLE_HOME \ db_1 \ $ hostname \ sysman \ config \ EMD. Properties The default value of agenttzregion is GMT, which can be changed

Package java. Lang; /*** A subclass of throwable. An application-level exception can be handled in a Catch Block,* It can also be thrown to the top management (encapsulation can be performed as needed when being thrown to the top management)** Comment by liqiang** @ Author Frank Yellin**/Public class exception extends throwable {Static final long serialversionuid =-3387516993124229948l; /**** Constructo

JSP labels have never been used before. Now, after adding JSP labels to the project, a problem occurs: Org. Apache. Jasper. jasperexception: Java. Lang. illegalargumentexception: attribute type = "password" is not allowed This error is introduced in JSP Label Use Type = "password"Class = "formpwdcss" tabindex = "2"/>, The reason is simple: Form: Password conflicts with type = "password". You onl

Oracle 10g installation in Oracle10g + win 7 After logging on to Em, the system prompts java. Lang. Exception: exception in sending request: null. (1) Find the EMD. properties file in sysman under the xxx_orcl file in db_1 under the Oracle installation directory, and change agenttzregion = GMT to agenttzregion = Asia/Chungking. (2) Open the CMD command window and reconfigure em. Set oracle_sid = orc

In Android development, the operations on the thread are miserable. After a thread is started, the thread must stop after the flag is set to false. When we use a thread again, whether the returned value of thread. isalife () is true or false, if we use thread. Start () Again, the following error is returned: Java. Lang. illegalthreadstateexception: thread already started If you want the thread to run a

In Android, you need to use jxl to read and write Excel files. copy the jar package to the project directory, and then use "build path --> Add to build path" to add the package to the project library, the result is that Java is always displayed when the class is instantiated. lang. verifyerror: I cannot explain it. I checked it online and said it was possible that an error occurred while importing the exter