JDK, whatever its version is, contains only
"core" java library classes. Servlet, JSP, EJB, JMS, JTS, .... consists in the so-called J2EE.
Servlet and JSP package come by two different ways: 1) Java Servlet Development Kid(JSDK, servlet.jar); or 2) Java 2 Enterprise Edition(J2EE, j2ee.jar). Since you are working on Servlet, you need to download either of them. Go to java.sun.com and browse its API.
"core" java library classes. Servlet, JSP, EJB, JMS, JTS, .... consists in the so-called J2EE.
Servlet and JSP package come by two different ways: 1) Java Servlet Development Kid(JSDK, servlet.jar); or 2) Java 2 Enterprise Edition(J2EE, j2ee.jar). Since you are working on Servlet, you need to download either of them. Go to java.sun.com and browse its API.