6 files changed, 17 insertions, 17 deletions
diff --git a/netx/net/sourceforge/jnlp/AppletDesc.java b/netx/net/sourceforge/jnlp/AppletDesc.java
index da8021e..cde5fbe 100644
--- a/netx/net/sourceforge/jnlp/AppletDesc.java
+++ b/netx/net/sourceforge/jnlp/AppletDesc.java
@@ -25,7 +25,7 @@ import java.util.*;
  * @author <a href="mailto:[email protected]">Jon A. Maxwell (JAM)</a> - initial author
  * @version $Revision: 1.8 $
  */
-public class AppletDesc {
+public class AppletDesc implements LaunchDesc {
 
     /** the applet name */
     private String name;
@@ -75,6 +75,7 @@ public class AppletDesc {
     /**
      * Returns the main class name in the dot-separated form (eg: foo.bar.Baz)
      */
+    @Override
     public String getMainClass() {
         return mainClass;
     }
diff --git a/netx/net/sourceforge/jnlp/ApplicationDesc.java b/netx/net/sourceforge/jnlp/ApplicationDesc.java
index 6d07043..99b3af8 100644
--- a/netx/net/sourceforge/jnlp/ApplicationDesc.java
+++ b/netx/net/sourceforge/jnlp/ApplicationDesc.java
@@ -24,7 +24,7 @@ import java.util.*;
  * @author <a href="mailto:[email protected]">Jon A. Maxwell (JAM)</a> - initial author
  * @version $Revision: 1.7 $
  */
-public class ApplicationDesc {
+public class ApplicationDesc implements LaunchDesc {
 
     /** the main class name and package */
     private String mainClass;
@@ -46,6 +46,7 @@ public class ApplicationDesc {
     /**
      * Returns the main class name
      */
+    @Override
     public String getMainClass() {
         return mainClass;
     }
diff --git a/netx/net/sourceforge/jnlp/InstallerDesc.java b/netx/net/sourceforge/jnlp/InstallerDesc.java
index 84e8892..165d795 100644
--- a/netx/net/sourceforge/jnlp/InstallerDesc.java
+++ b/netx/net/sourceforge/jnlp/InstallerDesc.java
@@ -22,7 +22,7 @@ package net.sourceforge.jnlp;
  * @author <a href="mailto:[email protected]">Jon A. Maxwell (JAM)</a> - initial author
  * @version $Revision: 1.6 $
  */
-public class InstallerDesc {
+public class InstallerDesc implements LaunchDesc {
 
     /** the main class name and package. */
     private String mainClass;
@@ -39,6 +39,7 @@ public class InstallerDesc {
     /**
      * Returns the main class name and package.
      */
+    @Override
     public String getMainClass() {
         return mainClass;
     }
diff --git a/netx/net/sourceforge/jnlp/JNLPFile.java b/netx/net/sourceforge/jnlp/JNLPFile.java
index 41354d3..6c458f8 100644
--- a/netx/net/sourceforge/jnlp/JNLPFile.java
+++ b/netx/net/sourceforge/jnlp/JNLPFile.java
@@ -91,7 +91,7 @@ public class JNLPFile {
     protected ResourcesDesc sharedResources = new ResourcesDesc(this, null, null, null);
 
     /** the application description */
-    protected Object launchType;
+    protected LaunchDesc launchType;
 
     /** the component description */
     protected ComponentDesc component;
@@ -446,7 +446,7 @@ public class JNLPFile {
      * Returns an object of one of the following types: AppletDesc,
      * ApplicationDesc and InstallerDesc
      */
-    public Object getLaunchInfo() {
+    public LaunchDesc getLaunchInfo() {
         return launchType;
     }
 
diff --git a/netx/net/sourceforge/jnlp/Parser.java b/netx/net/sourceforge/jnlp/Parser.java
index a823562..60cd9b4 100644
--- a/netx/net/sourceforge/jnlp/Parser.java
+++ b/netx/net/sourceforge/jnlp/Parser.java
@@ -609,7 +609,7 @@ class Parser {
      * @param parent the parent node
      * @throws ParseException if the JNLP file is invalid
      */
-    public Object getLauncher(Node parent) throws ParseException {
+    public LaunchDesc getLauncher(Node parent) throws ParseException {
         // check for other than one application type
         if (1 < getChildNodes(parent, "applet-desc").length
                 + getChildNodes(parent, "application-desc").length
diff --git a/netx/net/sourceforge/jnlp/runtime/JNLPClassLoader.java b/netx/net/sourceforge/jnlp/runtime/JNLPClassLoader.java
index 83ffcb5..86eda20 100644
--- a/netx/net/sourceforge/jnlp/runtime/JNLPClassLoader.java
+++ b/netx/net/sourceforge/jnlp/runtime/JNLPClassLoader.java
@@ -67,6 +67,7 @@ import net.sourceforge.jnlp.JARDesc;
 import net.sourceforge.jnlp.JNLPFile;
 import net.sourceforge.jnlp.JNLPMatcher;
 import net.sourceforge.jnlp.JNLPMatcherException;
+import net.sourceforge.jnlp.LaunchDesc;
 import net.sourceforge.jnlp.LaunchException;
 import net.sourceforge.jnlp.ParseException;
 import net.sourceforge.jnlp.PluginBridge;
@@ -636,8 +637,7 @@ public class JNLPClassLoader extends URLClassLoader {
 
                 // If jar with main class was not found and there are no more
                 // available jars, throw a LaunchException
-                if (file.getLaunchInfo() instanceof AppletDesc ||
-                    file.getLaunchInfo() instanceof ApplicationDesc) {
+                if (file.getLaunchInfo() != null) {
                     if (!foundMainJar
                             && (available == null || available.size() == 0))
                         throw new LaunchException(file, null, R("LSFatal"),
@@ -729,17 +729,14 @@ public class JNLPClassLoader extends URLClassLoader {
      */
     private void checkForMain(List<JARDesc> jars) throws LaunchException {
 
+        // Check launch info
         if (mainClass == null) {
-            Object obj = file.getLaunchInfo();
-
-            if (obj instanceof ApplicationDesc) {
-                ApplicationDesc ad = (ApplicationDesc) file.getLaunchInfo();
-                mainClass = ad.getMainClass();
-            } else if (obj instanceof AppletDesc) {
-                AppletDesc ad = (AppletDesc) file.getLaunchInfo();
-                mainClass = ad.getMainClass();
-            } else
+            LaunchDesc launchDesc = file.getLaunchInfo();
+            if (launchDesc == null) {
                 return;
+            }
+
+            mainClass = launchDesc.getMainClass();
         }
 
         // The main class may be specified in the manifest