com.bric.util
Class JVM

java.lang.Object
  com.bric.util.JVM

public class JVM
extends Object

Static methods relating to the JVM environment.

Instead of burying a constant like "isQuartz" in its most relevant class (such as OptimizedGraphics2D), it should be stored here so if other classes need to access it they don't necessary have to

Field Summary

static boolean	isMac Whether this session is on a Mac.
static boolean	isVista Whether this session is on Vista.
static boolean	isWindows Whether this session is on Windows.
static float	javaVersion The major Java version being used (1.4, 1.5, 1.6, etc.), or -1 if this value couldn't be correctly determined.
static boolean	usingQuartz If on a Mac: whether Quartz is the rendering pipeline.

Constructor Summary

JVM()

Method Summary

static float	getMajorJavaVersion() This converts the system property "java.version" to a float value.
static float	getMajorJavaVersion(boolean catchSecurityException)
static String	getProfile() Gets basic information about this session's JVM: the OS name & version, the Java version, and (on Mac) whether Quartz is being used.
static void	printProfile() Prints basic information about this session's JVM: the OS name & version, the Java version, and (on Mac) whether Quartz is being used.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

javaVersion

public static final float javaVersion

The major Java version being used (1.4, 1.5, 1.6, etc.), or -1 if this value couldn't be correctly determined.

isMac

public static final boolean isMac

Whether this session is on a Mac.

isWindows

public static final boolean isWindows

Whether this session is on Windows.

isVista

public static final boolean isVista

Whether this session is on Vista.

usingQuartz

public static final boolean usingQuartz

If on a Mac: whether Quartz is the rendering pipeline.

Constructor Detail

JVM

public JVM()

Method Detail

printProfile

public static void printProfile()

Prints basic information about this session's JVM: the OS name & version, the Java version, and (on Mac) whether Quartz is being used.

getProfile

public static String getProfile()

Gets basic information about this session's JVM: the OS name & version, the Java version, and (on Mac) whether Quartz is being used.

getMajorJavaVersion

public static float getMajorJavaVersion()
                                 throws AccessControlException

This converts the system property "java.version" to a float value. This drops rightmost digits until a legitimate float can be parsed.
For example, this converts "1.6.0_05" to "1.6".
This value is cached as the system property "java.major.version". Although technically this value is a String, it will always be parseable as a float.

Throws:

AccessControlException - this may be thrown in unsigned applets! Beware!

getMajorJavaVersion

public static float getMajorJavaVersion(boolean catchSecurityException)

Parameters:

catchSecurityException - if true and an exception occurs, then -1 is returned.

Returns:

the major java version, or -1 if this can't be determined/