线程“main”java.lang.NullPointerException中的异常
I'm getting the following error: 我得到了以下错误: Input date: Exception in thread "main" java.lang.NullPointerException at Project03.GetMonthInfo(Project...
请教一个问题:Exception in thread "main" java.lang.NullPointerException
错误提示: Exception in thread "main" java.lang.NullPointerException at awt.GridLayoutTest.init(GridLayoutTest.java:40) at awt.GridLayoutTest.<init&g...
求指导: Exception in thread "Thread-2" java.lang.NullPointerException
JAVA新人求指导: 我想用JSlider取值并通过串口将所获得的值发送出去。但目前遇到的问题是Exception in thread "Thread-2" java.lang.NullPointerException at msproject.Connection.run(Connection...
Exception in thread "main" java.lang.NullPointerException
hadoop2.4.1,在eclipse里面运行wordcount程序,参数设置应该没有问题 hdfs://192.168.1.110:9000/user/hadoop/input hdfs://192.168.1.110:9000/user/hadoop/output 但是运行之后报了这个错误...
20170204Exception in thread "main" java.lang.NullPointerException
Exception in thread "main" java.lang.NullPointerException at com.txw.Ftest.getControlPanel(Ftest.java:28) at com.txw.Ftest.getJContentPane(Ftest.jav...
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
GUI练习:文件的打开保存 import java.awt.*;import java.awt.event.*;import java.io.*;public class MyMenuDemo { private Frame f; private MenuBar mb; pr...
关于Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException的问题
新手小弟做了一个图形界面查询数据库,数据库已经连接成功,但是在查询的时候一直出现这个问题 Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException 错误出现在Statement stmt=con.createSta...
线程“AWT-EventQueue-0”java.lang中的异常。NullPointerException Java
I keep getting this error in my console, however there's no error in my coding when I look over it. It also keeps opening up the exact same JOptionPan...
线程“AWT-EventQueue-0”中的异常swin中的java.lang.NullPointerException应用程序[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...
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
错误提示 Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at TalkClientFace$1.actionPerformed(TalkClient.java:144) at javax.swing....
Hibernate连接数据库一直报NullPointerException
原来是少了这个。。//private HibernateTemplate hibernateTemplate; //少了下面public HibernateTemplate getHibernateTemplate() {return hibernateTemplate;}@Resourcepubl
Hibernate n:m extractHashCode抛出NullPointerException
I get the following exception while inserting an object with hibernate. Reading from the database works like a charm. I use MySQL 5.5 as database prov...
JPA报错, java.lang.NullPointerException
java.lang.NullPointerException我觉得这应该是一个很常见的错误, 数据库没取到数据嘛, 很正常, JPA没取到数据就是会抛出空指针异常, 但是就是这么简单的一个错误也让我找了十几分钟, 开始怀疑自己的人生了都原因是这样的, 在实验多对一的关联关系, 从别的地方复制了两个实...
【Android】【问题】Eclipse问题集锦:errors running builder 'Android Pre Compiler' on project'项目名称':java.lang.NullPointerException
一、问题: Errors occurred during the build. errors running builder 'Android Pre Compiler' on project'项目名称':java.lang.NullPointerException 二、原因分析以及解决方案: ...
Errors running builder 'Android Resource Manager' on Project java.lang.NullPointerException
进来在ADT中创建工程时,总是会出现NullPointerException的错误,找遍了StackOverflow,试过了上面说的方法,都不管用。 最后在一篇blog中找到了答案。地址:http://blog.nairplanet.com/2014/07/errors-running-builde...
奇怪的java.lang.NullPointerException
就剩18分了 哎~~~~ 是这样的 我之前使用的是: jdk-1_5_0_05-windows-i586-p.exe jakarta-tomcat-5.5.9.exe eclipse-SDK-3.2-win32.zip MyEclipseEnterpriseWorkbenchInstal...
使用ServletContext时的java.lang.NullPointerException
I was examining the use of ServletContext when i got the null pointer exception. I don't understand why do i get this exception. 当我得到空指针异常时,我正在研究Serv...
如何在此代码中处理java.lang.NullPointerException
This is my Code and it throws java.lang.NullPointerException I tried to handle it using other similar topics on this site but it wasn't useful. 这是我的代码...
ejb + JPA多租户与hibernate4,无法完成架构更新:java.lang.NullPointerException
Now I have an application with jpa(hibernate4) mutlitenancy, but there are some exceptions, I use ejb3+jpa+wildfly, I don't know where is wrong, only ...
璇诲彇鏂囦欢,鍑虹幇浜唈ava.lang.NullPointerException???
浠ヤ笅璇诲彇file鏂囨。鏃舵姤java.lang.NullPointerException <%@ page contentType="text/html; charset=gb2312" import="java.io.*"%> <% try { //浣跨敤Serv...