nested exception is java lang nullpointerexception

A small struts2 program debugging fails after devmodel is changed to true, Severe: exception starting filter struts2Java. Lang. nullpointerexceptionAt com. opensymphony. xwork2.util. filemanager $ filerevision. needsreloading (filemanager. Java: 209)At com. opensymphony. xwork2.util. filemanager. fileneedsreloading (

Severe: exception starting filter struts2 Java. Lang. nullpointerexception At com. opensymphony. xwork2.util. filemanager $ filerevision. needsreloading (filemanager. Java: 209) At com. opensymphony. xwork2.util. filemanager. fileneedsreloading (filemanager.

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

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 pro

Java. lang. NullPointerException:1: java. lang. Double. parseDoubleJava codeJava. lang. NullPointerExceptionSun. misc. FloatingDecimal. readJavaFormatString (FloatingDecimal. java: 991)

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

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

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) (throug

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 lis

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

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

Org. w3c. dom. ls. LSException: java. lang. NullPointerException, Chinese programming Operating Environment: OS: WIN 10.0.14393 x64 family Edition JDK: JavaSE 1.5.0 _ 20 i586 Tomcat: 6.0.48 win32 ----------------------------------------------------------------- Procedure: Run startup. bat to start Tomcat. ----------------------------------------------------------

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

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 inconvenien

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