org.compass.core.util
Class JdkVersion

java.lang.Object
  extended by org.compass.core.util.JdkVersion

public class JdkVersion
extends Object

Helper class used to find the current Java/JDK version.

Author:
kimchy

Field Summary
static int JAVA_13
          Constant identifying the 1.3.x JVM (JDK 1.3).
static int JAVA_14
          Constant identifying the 1.4.x JVM (J2SE 1.4).
static int JAVA_15
          Constant identifying the 1.5 JVM (Java 5).
static int JAVA_16
          Constant identifying the 1.6 JVM (Java 6).
static int JAVA_17
          Constant identifying the 1.7 JVM (Java 7).
 
Constructor Summary
JdkVersion()
           
 
Method Summary
static String getJavaVersion()
          Return the full Java version string, as returned by System.getProperty("java.version").
static int getMajorJavaVersion()
          Get the major version code.
static boolean isAtLeastJava14()
          Convenience method to determine if the current JVM is at least Java 1.4.
static boolean isAtLeastJava15()
          Convenience method to determine if the current JVM is at least Java 1.5 (Java 5).
static boolean isAtLeastJava16()
          Convenience method to determine if the current JVM is at least Java 1.6 (Java 6).
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

JAVA_13

public static final int JAVA_13
Constant identifying the 1.3.x JVM (JDK 1.3).

See Also:
Constant Field Values

JAVA_14

public static final int JAVA_14
Constant identifying the 1.4.x JVM (J2SE 1.4).

See Also:
Constant Field Values

JAVA_15

public static final int JAVA_15
Constant identifying the 1.5 JVM (Java 5).

See Also:
Constant Field Values

JAVA_16

public static final int JAVA_16
Constant identifying the 1.6 JVM (Java 6).

See Also:
Constant Field Values

JAVA_17

public static final int JAVA_17
Constant identifying the 1.7 JVM (Java 7).

See Also:
Constant Field Values
Constructor Detail

JdkVersion

public JdkVersion()
Method Detail

getJavaVersion

public static String getJavaVersion()
Return the full Java version string, as returned by System.getProperty("java.version").

Returns:
the full Java version string
See Also:
System.getProperty(String)

getMajorJavaVersion

public static int getMajorJavaVersion()
Get the major version code. This means we can do things like if (getMajorJavaVersion() < JAVA_14).

Returns:
a code comparable to the JAVA_XX codes in this class
See Also:
JAVA_13, JAVA_14, JAVA_15, JAVA_16, JAVA_17

isAtLeastJava14

public static boolean isAtLeastJava14()
Convenience method to determine if the current JVM is at least Java 1.4.

Returns:
true if the current JVM is at least Java 1.4
See Also:
getMajorJavaVersion(), JAVA_14, JAVA_15, JAVA_16, JAVA_17

isAtLeastJava15

public static boolean isAtLeastJava15()
Convenience method to determine if the current JVM is at least Java 1.5 (Java 5).

Returns:
true if the current JVM is at least Java 1.5
See Also:
getMajorJavaVersion(), JAVA_15, JAVA_16, JAVA_17

isAtLeastJava16

public static boolean isAtLeastJava16()
Convenience method to determine if the current JVM is at least Java 1.6 (Java 6).

Returns:
true if the current JVM is at least Java 1.6
See Also:
getMajorJavaVersion(), JAVA_16, JAVA_17


Copyright (c) 2004-2009 The Compass Project.