error 500 java lang nullpointerexception

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

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.

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.

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

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.

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

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

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 exception java. Lang. nullpointerexception is a common exception.

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

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 t

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. Java: 60) At com

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

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. ----------------------------------------------------------

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

An error is reported when you use m2eclipse to import an existing Maven project. Java. Lang. nullpointerexceptionAt org. Apache. Maven. plugin. defaultindescriptorcache $ cachekey. At org. Apache. Maven. plugin. defaultindescriptorcache. createkey (defaultplugindescriptorcache. Java: 62)At org. Apache. Maven. plugin.

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 (filemanager. Java: 60)At com. opensymphony. x

Java. Lang. nullpointerexceptionAt oracle. JDBC. Driver. scrollableresultset. Close (scrollableresultset. Java: 149)At org. Apache. tomcat. DBCP. DBCP. delegatingresultset. Close (delegatingresultset. Java: 152)At com. Unify. Common. Page. exportalldata (page. Java: 234) ..

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