Package org.codehaus.cargo.container.internal.util

Class JdkUtils

java.lang.Object

org.codehaus.cargo.container.internal.util.JdkUtils

public final class JdkUtils
extends Object

Set of common JDK utility methods.

Method Summary

Modifier and Type	Method	Description
static int	getMajorJavaVersion()	Get the major Java version.
static File	getToolsJar()	Returns the file containing the JDK tools (such as the compiler).
static File	getToolsJar(String javaHome)	Returns the file containing the JDK tools (such as the compiler) for the specified Java installation.
static boolean	isOSX()	Is the user running on a Macintosh OS X system? Heuristic derived from Apple Tech Note 2042.
static boolean	isWindows()	Is the user running on a Windows system?
static int	parseMajorJavaVersion(String version)	Parse major Java version from a Java version string.
static void	sleep(long ms)	Pauses the current thread for the specified amount.

Methods inherited from class java.lang.Object

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

Method Detail

getToolsJar

public static File getToolsJar()
                        throws FileNotFoundException

Returns the file containing the JDK tools (such as the compiler). This method must not be called on Mac OSX as there is no tools.jar file on that platform (everything is included in classes.jar).

Returns:

The tools.jar file

Throws:

FileNotFoundException - If the tools.jar file could not be found

getToolsJar

public static File getToolsJar(String javaHome)

Returns the file containing the JDK tools (such as the compiler) for the specified Java installation. This method must not be called on Mac OSX as there is no tools.jar file on that platform (everything is included in classes.jar).

Parameters:

javaHome - The installation directory of the JRE/JDK for which to locate the JDK tools, must not be null.

Returns:

The absolute (and possibly non-existent) path to the tools.jar file, never null.

isOSX

public static boolean isOSX()

Is the user running on a Macintosh OS X system? Heuristic derived from Apple Tech Note 2042.

Returns:

true if the user's system is determined to be Mac OS X.

isWindows

public static boolean isWindows()

Is the user running on a Windows system?

Returns:

true if the user's system is determined to be Windows.

getMajorJavaVersion

public static int getMajorJavaVersion()

Get the major Java version.

Returns:

Major Java version.

parseMajorJavaVersion

public static int parseMajorJavaVersion(String version)

Parse major Java version from a Java version string.

Parameters:

version - Java version string.

Returns:

Major Java version.

sleep

public static void sleep(long ms)

Pauses the current thread for the specified amount.

Parameters:

ms - The time to sleep in milliseconds