csdn

Servlet.service() for servlet jsp threw exception java.lang.NullPointerException

at org.apache.jsp.Tes2.Input2_jsp._jspService(Input2_jsp.java:116) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http ...
Android Authority

NullPointerException in Java - Explaining the billion dollar mistake

While Java is one of the most in-demand and widely used programming languages in the world, it is not without its detractors. Java is not a particularly beginner-friendly language and it is rife with ...
InfoWorld

Effective Java NullPointerException Handling

It doesn’t take much Java development experience to learn firsthand what the NullPointerException is about. In fact, one person has highlighted dealing with this as the number one mistake Java ...
csdn

weblogic部署项目报java.lang.ClassNotFoundException

之前部署在tomcat 上 jdk为1.6 领导要求改在weblogic 8.14 版本上部署 将jdk换成1.4后 修改代码 tomcat部署无异常 换成weblogic后一直出错 Exception:weblogic.management.ApplicationException: activate failed for WebRoot Module: WebRoot Error: ...