Stuck with classpath problem

Question

class HelloWorldApp {
       public static void main(String[] args)
                  System.out.println("Hello World!"); // Display the string.
                  JarClassLoader jcl=new  JarClassLoader("test-jcl.jar");
}i have above program code in HelloWorldApp.java file
this program is kept in directory /home/vipin/JCL/
in the same directory i have two jar file jcl.jar and test-jcl.jar
content of jcl.jar file is as
META-INF/
META-INF/MANIFEST.MF
jcl.properties
log4j.properties
xeus/
xeus/jcl/
xeus/jcl/AbstractClassLoader.class
xeus/jcl/ClasspathResources.class
xeus/jcl/Configuration.class
xeus/jcl/JarClassLoader.class
xeus/jcl/JarResources.class
xeus/jcl/JclObjectFactory.class
xeus/jcl/exception/
xeus/jcl/exception/JclException.class
and content of test-jcl.jar is as
META-INF/
META-INF/MANIFEST.MF
log4j.properties
xeus/
xeus/jcl/
xeus/jcl/test/
xeus/jcl/test/Test.class
and i am compiling my HelloWorldApp.java as
javac -classpath /home/vipin/JCL\ LIBRARY/jcl.jar HelloWorldApp.java
but it gives error as:
HelloWorldApp.java:7: cannot resolve symbol
symbol  : class JarClassLoader
location: class HelloWorldApp
                  JarClassLoader jcl=new  JarClassLoader("test-jcl.jar");
                  ^
HelloWorldApp.java:7: cannot resolve symbol
symbol  : class JarClassLoader
location: class HelloWorldApp
                  JarClassLoader jcl=new  JarClassLoader("test-jcl.jar");what goes wrong with me?

Answer 1

Vipin_Dahiya wrote:
but it gives error as:
HelloWorldApp.java:7: cannot resolve symbol
symbol  : class JarClassLoader
location: class HelloWorldApp
JarClassLoader jcl=new  JarClassLoader("test-jcl.jar");
^
HelloWorldApp.java:7: cannot resolve symbol
symbol  : class JarClassLoader
location: class HelloWorldApp
JarClassLoader jcl=new  JarClassLoader("test-jcl.jar");what goes wrong with me?"cannot resolve symbol" is the compiler's way of saying "I don't know what JarClassLoader is!" You need to import JarClassLoader so that you can use it in your program.
Remember to use the full name of the class in your import statement. And make sure whatever jar file it lives in is included as part of the classpath you use when compiling the program.