Mac上的java.lang.NullPointerException,但不在Windows上!
I have searched and searched for a solution to this problem, but it seems no-one else is experiencing it. Here's a description: 我已经搜索并搜索了这个问题的解决方案,但似乎...
java.lang.nullpointerException的问题
照着书上抄的B_树的例子,两个文件BayerTree.java和Example10_4.java BayerTree.java public class BayerTree{ private int m; //m为B_树的阶private BayerTreeNode bt; ...
javax.servlet.ServletException: java.lang.NullPointerException,这个是什么错误??
javax.servlet.ServletException: java.lang.NullPointerException org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:515) org.apach...
救命啊,要死人了啊javax.ejb.EJBException: java.lang.NullPointerException
javax.ejb.EJBException: java.lang.NullPointerException at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:63) at org.jboss.asp...
并发引起的java.lang.NullPointerException
问题背景: 我有一段程序,大量地、并发地发送SNMP告警。这里所谓的并发,就是有很多的定时任务(java.util.Timer),它们行为独立,各自创建SNMPTrap实例,各自通过SNMPTrap 发SNMP告警。 问题描述: 多个Timer长时间(月级)运行时,经常莫名奇妙某个Timer就死掉...
Maven打包时出现“Show Console View”错误弹出框,错误详情为“An internal error has occurred. java.lang.NullPointerException”的解决方法
今天为项目打包时出现了下面的错误提示:打开Details里面写的是“An internal error has occurred. java.lang.NullPointerException”。在网上搜索了一下,找到了解决方法,特此记录一下。解决方法:1.关闭eclipse等开发环境;2.找到对应...
. lang。运行时异常:无法启动activity ComponentInfo{com.example.gchat/com.example.gchat。HomeActivity }:java.lang.NullPointerException
I was trying to create a menu like this(Menu in gray background)- 我试着创建一个这样的菜单(灰色背景的菜单)- I made it using a LayoutInflator. Its code is below- 我用的是Lay...
. lang。RuntimeException:无法启动activity ComponentInfo{.. .} .lang. nullpointerexception
I want to add some data to sqlite dy fragmnet.but when i Run the code it gives this error.. 我想给sqlite dy fragmnet添加一些数据。但是当我运行代码时,它给出了这个错误。 java.lan...
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.love5/com.example.love5.Main11Activity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.
若有 java.lang.RuntimeException和 java.lang.NullPointerException: Attempt to invoke virtual method 'void android.一起的异常报错, 很大几率是因为控件实列写错了,好好检查R.id.xx有没有...
. lang。异常:无法启动活动ComponentInfo{com.example.ball_anim/com.example.ball_anim。主要}:java.lang.NullPointerException
hi i have a "strange" problem with my code this is what log says: 你好,我的代码有个“奇怪”的问题这就是log说的 06-15 17:06:38.054: E/AndroidRuntime(5699): FATAL EXCEPTION...
. lang。RuntimeException:无法启动activity ComponentInfo{com.example.namecardlistview.MainActivity}: java.lang。NullPointerException(复制)
This question already has an answer here: 这个问题已经有了答案: What is a NullPointerException, and how do I fix it? 12 answers 什么是NullPointerExceptio...
无法启动活动ComponentInfo java.lang.NullPointerException:[duplicate]
This question already has an answer here: 这个问题在这里已有答案: What is a NullPointerException, and how do I fix it? 12 answers 什么是NullPointerExcepti...
org.eclipse.e4.core.di。InjectionException:java.lang.NullPointerException
Here's the issue. I created a sample Eclipse 4 (Luna) application using the wizard. Everything worked fine. I decide to move the user interfaces to a ...
Spring 使用@Resource()出现 Exception in thread "main" java.lang.NullPointerException 错误
今天在学习Spring注解 @Resource时一直出现Exception in thread "main" java.lang.NullPointerException 错误。 后来经过查找,得出报错原因:JDK的原因 从@Resource()的包: import javax.anno...
Java中出现了一个不知原因的NullPointerException
当我在写程序中出现一个excption。百思不得解,然后我就写了一个小程序测试。程序是这样的时候: public class HHH { private int[] a; public HHH() { int[] a = new int[10]; } pub...
2.java.lang.NullPointerException(空指针异常)
调用了未经初始化的对象或者是不存在的对象经常出现在创建图片,调用数组这些操作中,比如图片未经初始化,或者图片创建时的路径错误等等。对数组操作中出现空指针,即把数组的初始化和数组元素的初始化混淆起来了。数组的初始化是对数组分配需要的空间,而初始化后的数组,其中的元素并没有实例化,依然是空的,所以还需要...
java.lang.NullPointerException,找不到有什么问题
am trying to rewrite a program I found to create a neural network the code seems to be very fine (atleast for me) but I keep getting java.lang.NullPoi...
这个Java NullPointerException的原因是什么? [重复]
This question already has an answer here: 这个问题在这里已有答案: What is a NullPointerException, and how do I fix it? 12 answers 什么是NullPointerExcepti...
生成随机数的NullPointerException [重复]
This question already has an answer here: 这个问题在这里已有答案: NullPointerException when Creating an Array of objects [duplicate] 9 answers 创建对象数组时出...
在android上测试,片段[重复]上的NullPointerException
This question already has an answer here: 这个问题在这里已有答案: What is a NullPointerException, and how do I fix it? 12 answers 什么是NullPointerExcepti...