com.izforge.izpack.installer.requirement
Class JavaVersionChecker

java.lang.Object
  com.izforge.izpack.installer.requirement.JavaVersionChecker

All Implemented Interfaces:

RequirementChecker

public class JavaVersionChecker
extends Object
implements RequirementChecker

Verifies that the correct java version is available for installation to proceed.

Author:

Tim Anderson

Constructor Summary

JavaVersionChecker(InstallData installData, Prompt prompt)
Constructs a JavaVersionChecker.

Method Summary

boolean	check() Checks the Java version.
protected String	getJavaVersion() Returns the java version.
protected String	getVersionNotAvailable(String version, String requiredVersion) Formats a message indicating the required java version isn't available.
protected void	versionNotAvailable(String version, String requiredVersion) Invoked when the required java version is not available.

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaVersionChecker

public JavaVersionChecker(InstallData installData,
                          Prompt prompt)

Constructs a JavaVersionChecker.

Parameters:

installData - the installation data

prompt - the prompt

Method Detail

check

public boolean check()

Checks the Java version.

Specified by:

check in interface RequirementChecker

Returns:

true if requirements are met, otherwise false

versionNotAvailable

protected void versionNotAvailable(String version,
                                   String requiredVersion)

Invoked when the required java version is not available.

Parameters:

version - the current version

requiredVersion - the required version

getVersionNotAvailable

protected String getVersionNotAvailable(String version,
                                        String requiredVersion)

Formats a message indicating the required java version isn't available.

Parameters:

version - the current version

requiredVersion - the required version

Returns:

the formatted message

getJavaVersion

protected String getJavaVersion()

Returns the java version.

Returns:

the java version, as determined by the java.version system property