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jaxp/src/java.xml/share/classes/com/sun/org/apache/xalan/internal/XalanConstants.java

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 210 
 211     /**
 212      * Feature enableExtensionFunctions
 213      */
 214     public static final String ORACLE_ENABLE_EXTENSION_FUNCTION =
 215             ORACLE_JAXP_PROPERTY_PREFIX + "enableExtensionFunctions";
 216     public static final String SP_ORACLE_ENABLE_EXTENSION_FUNCTION = "javax.xml.enableExtensionFunctions";
 217 
 218     /**
 219      * Values for a feature
 220      */
 221     public static final String FEATURE_TRUE = "true";
 222     public static final String FEATURE_FALSE = "false";
 223 
 224     /**
 225      * Check if we're in jdk8 or above
 226      */
 227     public static final boolean IS_JDK8_OR_ABOVE = isJavaVersionAtLeast(8);
 228 
 229     /*
 230      * Check the version of the current JDK against that specified in the
 231      * parameter
 232      *
 233      * There is a proposal to change the java version string to:
 234      * MAJOR.MINOR.FU.CPU.PSU-BUILDNUMBER_BUGIDNUMBER_OPTIONAL
 235      * This method would work with both the current format and that proposed
 236      *
 237      * @param compareTo a JDK version to be compared to
 238      * @return true if the current version is the same or above that represented
 239      * by the parameter
 240      */
 241     public static boolean isJavaVersionAtLeast(int compareTo) {
 242         String javaVersion = SecuritySupport.getSystemProperty("java.version");
 243         String versions[] = javaVersion.split("\\.", 3);
 244         if (Integer.parseInt(versions[0]) >= compareTo ||
 245             Integer.parseInt(versions[1]) >= compareTo) {
 246             return true;
 247         }
 248         return false;
 249     }
 250 } // class Constants


 210 
 211     /**
 212      * Feature enableExtensionFunctions
 213      */
 214     public static final String ORACLE_ENABLE_EXTENSION_FUNCTION =
 215             ORACLE_JAXP_PROPERTY_PREFIX + "enableExtensionFunctions";
 216     public static final String SP_ORACLE_ENABLE_EXTENSION_FUNCTION = "javax.xml.enableExtensionFunctions";
 217 
 218     /**
 219      * Values for a feature
 220      */
 221     public static final String FEATURE_TRUE = "true";
 222     public static final String FEATURE_FALSE = "false";
 223 
 224     /**
 225      * Check if we're in jdk8 or above
 226      */
 227     public static final boolean IS_JDK8_OR_ABOVE = isJavaVersionAtLeast(8);
 228 
 229     /*
 230      * Check the major version of the current JDK against that specified
 231      * in the parameter
 232      *
 233      * In JDK9 the java version string was changed to comply with JEP-223
 234      * so this method was modified to handle that new format as well

 235      *
 236      * @param compareTo a JDK major version to be compared to
 237      * @return true if the current major version is the same or above
 238      * that represented by the parameter
 239      */
 240     public static boolean isJavaVersionAtLeast(int compareTo) {
 241         String javaVersion = SecuritySupport.getSystemProperty("java.version");
 242         javaVersion = (javaVersion.matches("[1-9][0-9]*(\\.(0|[1-9][0-9]*))*\\-.*")) ? 
 243                           javaVersion.split("-|\\.")[0] :
 244                           javaVersion.split("\\.", 3)[1];
 245         return Integer.parseInt(javaVersion) >= compareTo;


 246     }
 247 } // class Constants
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