package com.xxx.zzz.aall.gsonllll.googlepp.internalbb;


public final class JavaVersionq {



  private static final int majorJavaVersion = determineMajorJavaVersion();

  private static int determineMajorJavaVersion() {
    String javaVersion = System.getProperty("java.version");
    return getMajorJavaVersion(javaVersion);
  }


  static int getMajorJavaVersion(String javaVersion) {
    int version = parseDotted(javaVersion);
    if (version == -1) {
      version = extractBeginningInt(javaVersion);
    }
    if (version == -1) {
      return 6;
    }
    return version;
  }


  private static int parseDotted(String javaVersion) {
    try {
      String[] parts = javaVersion.split("[._]");
      int firstVer = Integer.parseInt(parts[0]);
      if (firstVer == 1 && parts.length > 1) {
        return Integer.parseInt(parts[1]);
      } else {
        return firstVer;
      }
    } catch (NumberFormatException e) {
      return -1;
    }
  }

  private static int extractBeginningInt(String javaVersion) {
    try {
      StringBuilder num = new StringBuilder();
      for (int i = 0; i < javaVersion.length(); ++i) {
        char c = javaVersion.charAt(i);
        if (Character.isDigit(c)) {
          num.append(c);
        } else {
          break;
        }
      }
      return Integer.parseInt(num.toString());
    } catch (NumberFormatException e) {
      return -1;
    }
  }

  
  public static int getMajorJavaVersion() {
    return majorJavaVersion;
  }

  
  public static boolean isJava9OrLater() {
    return majorJavaVersion >= 9;
  }

  private JavaVersionq() { }
}