/*
* JBoss, Home of Professional Open Source.
* Copyright 2010, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.process;
import java.io.File;
import org.jboss.as.process.logging.ProcessLogger;
/**
*
* @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
* @version $Revision: 1.1 $
*/
public class DefaultJvmUtils {
/**
* Get the home dir of the currently executing jvm
*
* @return The home dir
*/
public static String getCurrentJvmHome() {
return System.getProperty("java.home");
}
/**
* Find the java executable under a given java home dir
*
* @param javaHome The java home dir
* @return The java executable
* @throws IllegalStateException if the java executable could not be found
*/
public static String findJavaExecutable(String javaHome) {
File file = new File(javaHome);
if (!file.exists()) {
throw ProcessLogger.ROOT_LOGGER.invalidJavaHome(file.getAbsolutePath());
}
file = new File(file, "bin");
if (!file.exists()) {
throw ProcessLogger.ROOT_LOGGER.invalidJavaHomeBin(file.getAbsolutePath(), file.getParentFile().getAbsolutePath());
}
File java = new File(file, "java");
if (!java.exists()) {
java = new File(file, "java.exe");
}
if (!java.exists()) {
throw ProcessLogger.ROOT_LOGGER.cannotFindJavaExe(file.getAbsolutePath());
}
return java.getAbsolutePath();
}
}