80     }
  81 
  82     /*
  83      * Returns true if the given JAR file has the Class-Path attribute in the
  84      * main section of the JAR manifest. Throws RuntimeException if the given
  85      * path is not a JAR file or some other error occurs.
  86      */
  87     public static boolean isClassPathAttributePresent(String path) {
  88         try {
  89             Manifest man = (new JarFile(path)).getManifest();
  90             if (man != null) {
  91                 if (man.getMainAttributes().getValue(Attributes.Name.CLASS_PATH) != null) {
  92                     return true;
  93                 }
  94             }
  95             return false;
  96         } catch (IOException ioe) {
  97             throw new RuntimeException(ioe.getMessage());
  98         }
  99     }
 100 
 101     /*
 102      * Return the temporary directory that the VM uses for the attach
 103      * and perf data files.
 104      *
 105      * It is important that this directory is well-known and the
 106      * same for all VM instances. It cannot be affected by configuration
 107      * variables such as java.io.tmpdir.
 108      */
 109     public static native String getVMTemporaryDirectory();
 110 }

  80     }
  81 
  82     /*
  83      * Returns true if the given JAR file has the Class-Path attribute in the
  84      * main section of the JAR manifest. Throws RuntimeException if the given
  85      * path is not a JAR file or some other error occurs.
  86      */
  87     public static boolean isClassPathAttributePresent(String path) {
  88         try {
  89             Manifest man = (new JarFile(path)).getManifest();
  90             if (man != null) {
  91                 if (man.getMainAttributes().getValue(Attributes.Name.CLASS_PATH) != null) {
  92                     return true;
  93                 }
  94             }
  95             return false;
  96         } catch (IOException ioe) {
  97             throw new RuntimeException(ioe.getMessage());
  98         }
  99     }










 100 }