Discover java lang nullpointerexception group, include the articles, news, trends, analysis and practical advice about java lang nullpointerexception group on alibabacloud.com
My exceptions-java. lang. NullPointerException, nullpointerexception
I believe everyone is very familiar with this exception. I believe that everyone has met this exception in their programming career. During the development of 3.1 of colleges and universities, such errors were thrown out again. This is a small bug, bu
Analysis of Java NULL pointer exceptions (1)
The Java language has an "exception mechanism" to handle special cases in the program. For example, if the divisor is zero, it is an "exception ".The NULL pointer exception java. Lang. nullpointerexception is a common exception.
ZendStudioforEclipse's java. lang. NullPointerException solution. Of course, this item is very memory-consuming and will not be recommended for configuration. recently, I found that this error occurs when ZendStudioforEclipse is enabled after the PHP project is created. Aninterna is very memory-consuming, and it is not recommended if the configuration is almost c
empty string, it is a null object .), The println method of the out object cannot directly operate on the null object. Therefore, the JSP page where code segment 1 is located will throw a "java. lang. NullPointerException" exception.Even if the Object may be empty, some methods of java.
JsonMappingException: (was java. lang. NullPointerException)An exception is reported when java objects are serialized using jackson:
com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.NullPointerException) (through reference chain: com.chanjet.gov.Student["age"]) at com.fasterxml.jackson.databind.Js
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 thin
If it is reproduced, please describe the source! Http://blog.csdn.net/xukunddp
I was frustrated when I wrote my blog in the previous article. Although I knew the steps for installing Aptana, the results were not satisfactory. There were still some problems with using Aptana, which were not solved by many people on the Internet. The first problem is that myeclipse cannot be started every time it is opened. You have to delete Org. eclipse. update or Org. eclipse. the osgi folder can be used t
When any method is called for a null pointer in Java, a null pointer exception (java. lang. NullPointerException) is thrown ). Null Pointer exceptions are definitely the most difficult to find and debug in Java, and you will never get any useful debugging information. Summar
Java. lang. NullPointerException, pointerexception when listView. getChildAt (I)
BaseAdapter returns the component that can display the number of items on the current screen. Therefore, it uses listView. getChildAt (I );
The returned result is a widget that can be displayed on the current screen. You cannot use the listView. getChildAt (I) method to retrieve widg
Error series for Android development (1), java. lang. NullPointerException, at android. widget. ListView. setupChild, appwidgetlistview
Problem description: The Running code reports a null pointer error, java. lang. NullPointerException
Lab environment: JDK 1.6, Axis2-1.3, using SSL/TLS (one-way/two-way authentication), Tomcat 5.5/glassfish v2
When you use SSL/TLS to access the Web Service of axis2, the following error occurs:Exception in thread "Main" org. Apache. axis2.axisfault: Java. Lang. nullpointerexception
This error is caused by the use of transportsession in the created web service-i
ZendStudioforEclipse6.x can be regarded as the best php ide. of course, this item is very memory-consuming and will not be recommended for configuration.
Recently, this error occurs when Zend Studio for Eclipse is enabled after the PHP project is created.
An internal error occurred during: "Building PHP projects ..."
Java. lang. NullPointerException
Ann
When I was working on a project and calling data in isubitemdao, the problem of hibernate java. Lang. nullpointerexception always occurred, and the page cannot be displayed. Then I checked the following online and saw the following message:Check the configuration file.For example, in Struts-config, whether the action name and path are consistent with those regist
Two days ago, I had to hand in a small Android item. I wanted to display a list of information from the previous activity on the new activity, but I had not adjusted the bug when I handed in the item, java. lang. nullpointerexception. I had to cancel this function. then I looked back and found that I was mentally retarded and made a mistake. before I jumped from
Java. lang. NullPointerException: No FileItemFactory has been set., fileitemfactory
1. Error description
java.lang.NullPointerException: No FileItemFactory has been set.at org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:354)at org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:126)at com.rome
Of course, this item is very memory-consuming and will not be recommended for configuration.
Recently, this error occurs when Zend studio for eclipse is enabled after the PHP project is created.
An internal error occurred during: "Building PHP projects ..."Java. Lang. nullpointerexception
Annoying. php projects will stop building after an error occurs,CodeTh
The following lists the NullPointerException that often occurs when we learn java and its solutions.
1. Null Pointer Error java. lang. nullPointerException uses the Basic JAVA data type. The value of the variable is either the def
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