ServletfailedwithException，java.lang.NullPointerException。求高手帮忙急急急急。我用的是weblogic10.3版本的JDK版本1.5启动之后点击页面很久都没有出来，才发现一直报这个错误。。。<Jun30,201111:22:54AMCST><Error><HTTP><BEA-101020>&l...

Exceptioninthread"main"java.lang.NullPointerException'>java.lang.NullPointerExceptionpackageyan1;importjavax.swing.*;importjavax.swing.table.*;importjava.awt.*;importjava.awt.event.*;//vistB...

Exceptioninthread"main"java.lang.NullPointerException'>java.lang.NullPointerException这个错误如何解决importjavax.swing.*;importjava.awt.*;classFrameTestextendsJFrame{publicFrameTest(){ super("客...

Exceptioninthread"main"java.lang.ArrayIndexOutOfBoundsException:0publicclasshao{publicstaticvoidmain(Stringargs[]){intmonth;month=Short.parseShort(args[0]);switch(month){case1:System.out.pri...

hibernate报错Exceptioninthread"main"java.lang.ExceptionInInitializerError'>java.lang.ExceptionInInitializerErrorhibernate.cfg.xml(放在src下面)<?xmlversion='1.0'encoding='utf-8'?><!DOCTYPE...

关于java的简单问题publicclasstest{publicstaticvoidmain(String[]args){Personye=newPerson();}}classPerson{intid;Personleft;Personright;}这段程序很怪，我用的jdk1.5在我笔记本上运行报错Exceptioninthread"main"java.lang.Inst...

jni异常：Exceptioninthread"main"java.lang.UnsatisfiedLinkError:hellojava代码：publicclassTestDLL{ static{ System.loadLibrary("goodluck"); } publicnativevoidhello(); publicstaticvoidmai...

出现Exceptioninthread"main"java.lang.NullPointerException'>java.lang.NullPointerException求指教，急急急publicclasstxtTOarray{ publicstaticvoidmain(String[]args){ try{ Filefile=newFile("D:\\arra...

[求助]关于Exceptioninthread"main"java.lang.NullPointerException的问题 能通过编译，但是不能运行！请各位高人帮忙看看！！packagecom.wish.interfacedemo;interfaceComputerTotalSales{publicdoubletotalSalesByYear();}classTele...

Servlet.service()forservletjspthrewexceptionjava.lang.NullPointerException2010-06-2523:07:00,281ERROR[org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/oa].[jsp]]Servlet.service()forser...

Exceptioninthread"main"java.lang.NullPointerException'>java.lang.NullPointerException问题求教！下面是源代码出现的异常是Exceptioninthread"main"java.lang.NullPointerException atcom.qq.server.db.Text1...

Exceptioninthread"main"java.lang.NullPointerException importjava.util.*;classMyKey{privateStringname;privateintage;publicMyKey(Stringname,intage){this.name=name;this.age=age;}publicStrin...

eclipse初次做hibernate实验执行测试文件的时候报错信息:Readingmappingsfromresource:com/bjsxt/hibernate/model/Student.hbm.xmlExceptioninthread"main"java.lang.IllegalAccessError:triedtoaccessfieldorg.hibernate.cf...

Exceptioninthread"main"java.lang.NullPointerException'>java.lang.NullPointerException谁帮我分析分析，我是新手importjavax.swing.JOptionPane;publicclassDemo2{ classMpoint{ doublex,y; Mpoint(){} voidget...

Exceptioninthread"main"java.lang.ArrayIndexOutOfBoundsException.html'>java.lang.ArrayIndexOutOfBoundsException:Arrayindex我在写连接池程序的时候报如下错误：java">Exceptioninthread"main"java.lang.ArrayIndexOut...

如何解决:Exceptioninthread"main"java.lang.NullPointerException'>java.lang.NullPointerException各位高手,本人新手上路.玩个简单的程序却遇到了个问题.编译时没报错,但是运行就有问题,麻烦大家帮忙看一下.小弟不胜感激!!!源程序如下:packageswing;importjava.awt.*;im...

编译运行出现exceptioninthread"main"java.lang.NoClassDefFoundError'>java.lang.NoClassDefFoundError:编译运行出现exceptioninthread"main"java.lang.NoClassDefFoundError:试了好几个程序都是但是在myeclipse下可以运行的本...

请教:Exceptioninthread"main"java.lang.NullPointerException'>java.lang.NullPointerException运行内容如下的UseDriver.java文件,importjava.sql.*;publicclassUseDriver{ publicstaticvoidmain(String[]args){ St...

严重:Servlet.service()forservlet()threwexceptionjava.lang.NullPoint下面代码几乎是按照书上来的，怎么有空指针的错误？实在找不出来，求大神指点！此段代码功能是将项目中某图片显示在客户端。java">importjavax.servlet.*;importjavax.servlet.http.*;importjavax.servlet.js...

Myeclipse开发Struts遇到错误我用myeclipse实验《JSP开发应用详解》上ch17的struts简单应用。我的环境：jdk1.5Eclipse3.1（已汉化）myeclipse4.1.1GA书上stuts应用应该是1.1的tomcat5.5我配置完struts-config.xml在server.xml设置了数据库源，开启SqlServer2000。---------------...