软件包javax.servlet不存在-ubuntu，tomcat

Question

echo $CLASSPATH

  /home/user/tomcat/lib/server-api.jar

echo $JAVA_HOME

  .:/usr/lib/jvm/java-6-sun

but when I try to compile .java which are in class folder

  javac  *.java

I get

  HelloServlet.java:2: package javax.servlet does not exist

and additional 5 similar errors.

I get no errors when

  javac -cp /home/user/tomcat/lib/servlet-api.jar *.java

Why is that? What should I change to make it work without -cp /path?

Answer 1

Looks like your classpath doesn't actually contain servlet-api.jar . The echo of CLASSPATH shows that it has server-api.jar in the path, but not servlet-api.jar. Try adding servlet-api.jar to your CLASSPATH definition and see if it works then.

Answer 2

you are gettig this error because servlet-api.jar file is not present in your path which you have written . Try to download servlet-api.jar file from this link http://www.java2s.com/Code/Jar/s/Downloadservletapijar.htm and extract the zip file in the download folder and then move servlet-api.jar to /var/lib/tomcat8/lib/ folder .

And for complie java file first go to "src" folder in your project by terminal and write command..

sudo javac -d ../classes/ *.java -cp /var/lib/tomcat8/lib/servlet-api.jar