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  1. JDK
  2. JDK-4404753

RMIClassLoader.loadClass does not support reload/refresh of "j.r.s.codebase"

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    • Subcomponent:
    • CPU:
      sparc
    • OS:
      solaris_7

      Description



      Name: sdR10048 Date: 01/15/2001


      public static Class loadClass(String name)
      does not look at property "java.rmi.server.codebase" if it is
      changed. For example if loadClass(String) has been called 2 times and
      before the second time property "java.rmi.server.codebase" has been
      changed - it will still be attempted to load class from codebase URL
      specified by the "old" property.
      See example:

      === T.java ===
      import java.rmi.*;
      import java.rmi.server.*;
      import java.net.MalformedURLException;

      public class T {
          static String root = "file:///home/dsv/tmp/";
          // should be changed ^^^^^^^^^^^^^^^^^^^^^^
          static String property = "java.rmi.server.codebase";
          static Class cl = null;

          static void loadLoadMe(String from) {
              try {
                  System.setProperty(property, from);
                  System.out.println(property+"="+System.getProperty(property));
                  cl = RMIClassLoader.loadClass("LoadMe");
                  Object obj = cl.newInstance();
                  System.out.println("LoadMe object says: " + obj.toString());

              } catch (Exception e) {
                  System.out.println(e);
              }
          }

          public static void main(String[] argv) {
              System.setSecurityManager(new RMISecurityManager());
              loadLoadMe(root+"LoadMe1/");
              loadLoadMe(root+"LoadMe2/");
          }
      }

      === LoadMe.java #1 === (should be in subdir LoadMe1/)
      public class LoadMe {
          public String toString() {
              return "LoadMe1";
          }
      }

      === LoadMe.java #2 === (should be in subdir LoadMe2/)
      public class LoadMe {
          public String toString() {
              return "LoadMe2";
          }
      }

      === output ===
      ] dsv@sword ~/tmp
      ] java -version
      java version "1.4.0-beta"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b46)
      Java HotSpot(TM) Client VM (build 1.4beta-B45, mixed mode)

      ] dsv@sword ~/tmp
      ] javac T.java
      Note: T.java uses or overrides a deprecated API.
      Note: Recompile with -deprecation for details.

      ] dsv@sword ~/tmp
      ] cd LoadMe1/

      ] dsv@sword ~/tmp/LoadMe1
      ] javac LoadMe.java

      ] dsv@sword ~/tmp/LoadMe1
      ] cd ../LoadMe2/

      ] dsv@sword ~/tmp/LoadMe2
      ] javac LoadMe.java

      ] dsv@sword ~/tmp/LoadMe2
      ] cd ../

      ] dsv@sword ~/tmp
      ] java T
      java.rmi.server.codebase=file:///home/dsv/tmp/LoadMe1/
      LoadMe object says: LoadMe1
      java.rmi.server.codebase=file:///home/dsv/tmp/LoadMe2/
      LoadMe object says: LoadMe1

      --------------------------------------------------
      ======================================================================

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              Assignee:
              ldorninsunw Laird Dornin (Inactive)
              Reporter:
              dsvsunw Dsv Dsv (Inactive)
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