git.gag.com Git - debian/openrocket/blob - src/net/sf/openrocket/startup/VersionHelper.java

   1 package net.sf.openrocket.startup;
   2
   3 import net.sf.openrocket.logging.LogHelper;
   4
   5 public class VersionHelper {
   6
   7         private static final LogHelper log = Application.getLogger();
   8
   9         private static final int REQUIRED_MAJOR_VERSION = 1;
  10         private static final int REQUIRED_MINOR_VERSION = 6;
  11
  12         // OpenJDK 1.6.0_0-b16 is known to work, 1.6.0_0-b12 does not
  13         private static final String BAD_OPENJDK_VERSION = "^1.6.0_0-b([0-9]|1[1-5])$";
  14
  15
  16         /**
  17          * Check that the JRE version is high enough.
  18          */
  19         static void checkVersion() {
  20
  21                 String[] version = System.getProperty("java.specification.version", "").split("\\.");
  22
  23                 String jreName = System.getProperty("java.vm.name", "(unknown)");
  24                 String jreVersion = System.getProperty("java.runtime.version", "(unknown)");
  25                 String jreVendor = System.getProperty("java.vendor", "(unknown)");
  26
  27                 log.info("Running JRE " + jreName + " version " + jreVersion + " by " + jreVendor);
  28
  29                 int major, minor;
  30
  31                 try {
  32                         major = Integer.parseInt(version[0]);
  33                         minor = Integer.parseInt(version[1]);
  34
  35                         if (major < REQUIRED_MAJOR_VERSION ||
  36                                         (major == REQUIRED_MAJOR_VERSION && minor < REQUIRED_MINOR_VERSION)) {
  37                                 Startup.error(new String[] { "Java SE version 6 is required to run OpenRocket.",
  38                                                 "You are currently running " + jreName + " version " +
  39                                                                 jreVersion + " by " + jreVendor });
  40                         }
  41
  42                 } catch (RuntimeException e) {
  43
  44                         Startup.confirm(new String[] { "The Java version in use could not be detected.",
  45                                         "OpenRocket requires at least Java SE 6.",
  46                                         "Continue anyway?" });
  47
  48                 }
  49
  50         }
  51
  52         /**
  53          * Check whether OpenJDK is being used, and if it is warn the user about
  54          * problems and confirm whether to continue.
  55          */
  56         static void checkOpenJDK() {
  57
  58                 if (System.getProperty("java.runtime.name", "").toLowerCase().indexOf("icedtea") >= 0 ||
  59                                 System.getProperty("java.vm.name", "").toLowerCase().indexOf("openjdk") >= 0) {
  60
  61                         String jreName = System.getProperty("java.vm.name", "(unknown)");
  62                         String jreVersion = System.getProperty("java.runtime.version", "(unknown)");
  63                         String jreVendor = System.getProperty("java.vendor", "(unknown)");
  64
  65                         if (jreVersion.matches(BAD_OPENJDK_VERSION)) {
  66
  67                                 Startup.confirm(new String[] { "Old versions of OpenJDK are known to have problems " +
  68                                                 "running OpenRocket.",
  69                                                 " ",
  70                                                 "You are currently running " + jreName + " version " +
  71                                                                 jreVersion + " by " + jreVendor,
  72                                                 "Do you want to continue?" });
  73                         }
  74                 }
  75         }
  76
  77 }