org.jboss.as.host.controller.jvm

Class JvmType

java.lang.Object

org.jboss.as.host.controller.jvm.JvmType

public final class JvmType
extends Object

JVM type detection utility.

Author:

Richard Opalka

Method Summary

Modifier and Type	Method and Description
static JvmType	createFromJavaExecutable(String javaExecutable, boolean forLaunch) Create a JvmType based on the location of the java executable.
static JvmType	createFromJavaHome(String javaHome, boolean forLaunch) Create a JvmType based on the location of the root dir of the JRE/JDK installation.
static JvmType	createFromSystemProperty(boolean forLaunch) Create a JvmType based on the location of the root dir of the JRE/JDK installation, as specified by the system property java.home.
boolean	equals(Object o)
Collection<String>	getDefaultArguments()
String	getJavaExecutable()
int	hashCode()
boolean	isForLaunch() Was this object created for the purpose of launching a process, or simply as a holder of data?
boolean	isModularJvm() Whether this JVM type is modular.

Methods inherited from class java.lang.Object

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

Method Detail

getJavaExecutable

public String getJavaExecutable()

isForLaunch

public boolean isForLaunch()

Was this object created for the purpose of launching a process, or simply as a holder of data?

Returns:

true if this object was created for the purpose of launching a process.

isModularJvm

public boolean isModularJvm()

Whether this JVM type is modular. This value is only reliable if isForLaunch() returns true, as otherwise checks for JVM modularity may not be performed or may not be accurate.

Returns:

true if the JVM is known to be modular, false otherwise

getDefaultArguments

public Collection<String> getDefaultArguments()

createFromJavaHome

public static JvmType createFromJavaHome(String javaHome,
                                         boolean forLaunch)

Create a JvmType based on the location of the root dir of the JRE/JDK installation.

Parameters:

javaHome - the root dir of the JRE/JDK installation. Cannot be null or empty

forLaunch - true if the created object will be used for launching servers; false if it is simply a data holder. A value of true will disable some validity checks and may disable determining if the JVM is modular

Returns:

the JvmType. Will not return null

Throws:

IllegalStateException - if the JvmType cannot be determined.

createFromJavaExecutable

public static JvmType createFromJavaExecutable(String javaExecutable,
                                               boolean forLaunch)

Create a JvmType based on the location of the java executable.

Parameters:

javaExecutable - the location of the java executable. Cannot be null or empty

forLaunch - true if the created object will be used for launching servers; false if it is simply a data holder. A value of true will disable some validity checks and may disable determining if the JVM is modular

Returns:

the JvmType. Will not return null

createFromSystemProperty

public static JvmType createFromSystemProperty(boolean forLaunch)

Create a JvmType based on the location of the root dir of the JRE/JDK installation, as specified by the system property java.home.

Parameters:

forLaunch - true if the created object will be used for launching servers; false if it is simply a data holder. A value of true will disable some validity checks and may disable determining if the JVM is modular

Returns:

the JvmType. Will not return null

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object