org.eclipse.jdt.launching/launching/org/eclipse/jdt/internal/launching/StandardVMRunner.java - jdt/eclipse.jdt.debug - Git at Google

 /*******************************************************************************
  *  Copyright (c) 2000, 2008 IBM Corporation and others.
  *  All rights reserved. This program and the accompanying materials
  *  are made available under the terms of the Eclipse Public License v1.0
  *  which accompanies this distribution, and is available at
  *  http://www.eclipse.org/legal/epl-v10.html
  *
  *  Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jdt.internal.launching;


 import java.io.File;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;

 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.core.runtime.IProgressMonitor;
 import org.eclipse.core.runtime.NullProgressMonitor;
 import org.eclipse.core.runtime.Platform;
 import org.eclipse.core.runtime.SubProgressMonitor;
 import org.eclipse.debug.core.DebugPlugin;
 import org.eclipse.debug.core.ILaunch;
 import org.eclipse.debug.core.model.IProcess;
 import org.eclipse.jdt.launching.AbstractVMRunner;
 import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants;
 import org.eclipse.jdt.launching.IVMInstall;
 import org.eclipse.jdt.launching.IVMInstall2;
 import org.eclipse.jdt.launching.VMRunnerConfiguration;

 import com.ibm.icu.text.DateFormat;
 import com.ibm.icu.text.MessageFormat;

 /**
  * A launcher for running Java main classes.
  */
 public class StandardVMRunner extends AbstractVMRunner {

 	/**
 	 * The VM install instance
 	 */
 	protected IVMInstall fVMInstance;

 	/**
 	 * Constructor
 	 * @param vmInstance
 	 */
 	public StandardVMRunner(IVMInstall vmInstance) {
 		fVMInstance= vmInstance;
 	}

 	/**
 	 * Returns the 'rendered' name for the current target
 	 * @param classToRun
 	 * @param host
 	 * @return the name for the current target
 	 */
 	protected String renderDebugTarget(String classToRun, int host) {
 		String format= LaunchingMessages.StandardVMRunner__0__at_localhost__1__1;
 		return MessageFormat.format(format, new String[] { classToRun, String.valueOf(host) });
 	}

 	/**
 	 * Returns the 'rendered' name for the specified command line
 	 * @param commandLine
 	 * @return the name for the process
 	 */
 	public static String renderProcessLabel(String[] commandLine) {
 		String format= LaunchingMessages.StandardVMRunner__0____1___2;
 		String timestamp= DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM).format(new Date(System.currentTimeMillis()));
 		return MessageFormat.format(format, new String[] { commandLine[0], timestamp });
 	}

 	/**
 	 * Prepares the command line from the specified array of strings
 	 * @param commandLine
 	 * @return
 	 */
 	protected String renderCommandLine(String[] commandLine) {
 		if (commandLine.length < 1)
 			return ""; //$NON-NLS-1$
 		StringBuffer buf= new StringBuffer();
 		for (int i= 0; i < commandLine.length; i++) {
 			buf.append(' ');
 			char[] characters= commandLine[i].toCharArray();
 			StringBuffer command= new StringBuffer();
 			boolean containsSpace= false;
 			for (int j = 0; j < characters.length; j++) {
 				char character= characters[j];
 				if (character == '\"') {
 					command.append('\\');
 				} else if (character == ' ') {
 					containsSpace = true;
 				}
 				command.append(character);
 			}
 			if (containsSpace) {
 				buf.append('\"');
 				buf.append(command.toString());
 				buf.append('\"');
 			} else {
 				buf.append(command.toString());
 			}
 		}
 		return buf.toString();
 	}

 	/**
 	 * Adds the values of args to the given list v
 	 * @param args
 	 * @param v
 	 */
 	protected void addArguments(String[] args, List v) {
 		if (args == null) {
 			return;
 		}
 		for (int i= 0; i < args.length; i++) {
 			v.add(args[i]);
 		}
 	}

 	/**
 	 * Returns the working directory to use for the launched VM,
 	 * or <code>null</code> if the working directory is to be inherited
 	 * from the current process.
 	 *
 	 * @return the working directory to use
 	 * @exception CoreException if the working directory specified by
 	 *  the configuration does not exist or is not a directory
 	 */
 	protected File getWorkingDir(VMRunnerConfiguration config) throws CoreException {
 		String path = config.getWorkingDirectory();
 		if (path == null) {
 			return null;
 		}
 		File dir = new File(path);
 		if (!dir.isDirectory()) {
 			abort(MessageFormat.format(LaunchingMessages.StandardVMRunner_Specified_working_directory_does_not_exist_or_is_not_a_directory___0__3, new String[] {path}), null, IJavaLaunchConfigurationConstants.ERR_WORKING_DIRECTORY_DOES_NOT_EXIST);
 		}
 		return dir;
 	}

 	/**
 	 * @see VMRunner#getPluginIdentifier()
 	 */
 	protected String getPluginIdentifier() {
 		return LaunchingPlugin.getUniqueIdentifier();
 	}

 	/**
 	 * Construct and return a String containing the full path of a java executable
 	 * command such as 'java' or 'javaw.exe'.  If the configuration specifies an
 	 * explicit executable, that is used.
 	 *
 	 * @return full path to java executable
 	 * @exception CoreException if unable to locate an executable
 	 */
 	protected String constructProgramString(VMRunnerConfiguration config) throws CoreException {

 		// Look for the user-specified java executable command
 		String command= null;
 		Map map= config.getVMSpecificAttributesMap();
 		if (map != null) {
 			command = (String)map.get(IJavaLaunchConfigurationConstants.ATTR_JAVA_COMMAND);
 		}

 		// If no java command was specified, use default executable
 		if (command == null) {
 			File exe = null;
 			if (fVMInstance instanceof StandardVM) {
 				exe = ((StandardVM)fVMInstance).getJavaExecutable();
 			} else {
 				exe = StandardVMType.findJavaExecutable(fVMInstance.getInstallLocation());
 			}
 			if (exe == null) {
 				abort(MessageFormat.format(LaunchingMessages.StandardVMRunner_Unable_to_locate_executable_for__0__1, new String[]{fVMInstance.getName()}), null, IJavaLaunchConfigurationConstants.ERR_INTERNAL_ERROR);
 			} else {
 				return exe.getAbsolutePath();
 			}
 		}

 		// Build the path to the java executable.  First try 'bin', and if that
 		// doesn't exist, try 'jre/bin'
 		String installLocation = fVMInstance.getInstallLocation().getAbsolutePath() + File.separatorChar;
 		File exe = new File(installLocation + "bin" + File.separatorChar + command); //$NON-NLS-1$
 		if (fileExists(exe)){
 			return exe.getAbsolutePath();
 		}
 		exe = new File(exe.getAbsolutePath() + ".exe"); //$NON-NLS-1$
 		if (fileExists(exe)){
 			return exe.getAbsolutePath();
 		}
 		exe = new File(installLocation + "jre" + File.separatorChar + "bin" + File.separatorChar + command); //$NON-NLS-1$ //$NON-NLS-2$
 		if (fileExists(exe)) {
 			return exe.getAbsolutePath();
 		}
 		exe = new File(exe.getAbsolutePath() + ".exe"); //$NON-NLS-1$
 		if (fileExists(exe)) {
 			return exe.getAbsolutePath();
 		}

 		// not found
 		abort(MessageFormat.format(LaunchingMessages.StandardVMRunner_Specified_executable__0__does_not_exist_for__1__4, new String[]{command, fVMInstance.getName()}), null, IJavaLaunchConfigurationConstants.ERR_INTERNAL_ERROR);
 		// NOTE: an exception will be thrown - null cannot be returned
 		return null;
 	}

 	/**
 	 * Convenience method to determine if the specified file exists or not
 	 * @param file
 	 * @return true if the file indeed exists, false otherwise
 	 */
 	protected boolean fileExists(File file) {
 		return file.exists() && file.isFile();
 	}

 	protected String convertClassPath(String[] cp) {
 		int pathCount= 0;
 		StringBuffer buf= new StringBuffer();
 		if (cp.length == 0) {
 			return "";    //$NON-NLS-1$
 		}
 		for (int i= 0; i < cp.length; i++) {
 			if (pathCount > 0) {
 				buf.append(File.pathSeparator);
 			}
 			buf.append(cp[i]);
 			pathCount++;
 		}
 		return buf.toString();
 	}

 	/**
 	 * This method is used to ensure that the JVM file encoding matches that of the console preference for file encoding.
 	 * If the user explicitly declares a file encoding in the launch configuration, then that file encoding is used.
 	 * @param vmargs the original listing of JVM arguments
 	 * @return the listing of JVM arguments including file encoding if one was not specified
 	 *
 	 * @since 3.4
 	 */
 	protected String[] ensureEncoding(ILaunch launch, String[] vmargs) {
 		boolean foundencoding = false;
 		for(int i = 0; i < vmargs.length; i++) {
 			if(vmargs[i].startsWith("-Dfile.encoding=")) { //$NON-NLS-1$
 				foundencoding = true;
 			}
 		}
 		if(!foundencoding) {
 			String encoding = launch.getAttribute(DebugPlugin.ATTR_CONSOLE_ENCODING);
 			if(encoding == null) {
 				return vmargs;
 			}
 			String[] newargs = new String[vmargs.length+1];
 			System.arraycopy(vmargs, 0, newargs, 0, vmargs.length);
 			newargs[newargs.length-1] = "-Dfile.encoding="+encoding; //$NON-NLS-1$
 			return newargs;
 		}
 		return vmargs;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.jdt.launching.IVMRunner#run(org.eclipse.jdt.launching.VMRunnerConfiguration, org.eclipse.debug.core.ILaunch, org.eclipse.core.runtime.IProgressMonitor)
 	 */
 	public void run(VMRunnerConfiguration config, ILaunch launch, IProgressMonitor monitor) throws CoreException {

 		if (monitor == null) {
 			monitor = new NullProgressMonitor();
 		}

 		IProgressMonitor subMonitor = new SubProgressMonitor(monitor, 1);
 		subMonitor.beginTask(LaunchingMessages.StandardVMRunner_Launching_VM____1, 2);
 		subMonitor.subTask(LaunchingMessages.StandardVMRunner_Constructing_command_line____2);

 		String program= constructProgramString(config);

 		List arguments= new ArrayList();
 		arguments.add(program);

 		// VM args are the first thing after the java program so that users can specify
 		// options like '-client' & '-server' which are required to be the first option
 		String[] allVMArgs = combineVmArgs(config, fVMInstance);
 		addArguments(ensureEncoding(launch, allVMArgs), arguments);

 		addBootClassPathArguments(arguments, config);

 		String[] cp= config.getClassPath();
 		int cpidx = -1;
 		if (cp.length > 0) {
 			cpidx = arguments.size();
 			arguments.add("-classpath"); //$NON-NLS-1$
 			arguments.add(convertClassPath(cp));
 		}
 		arguments.add(config.getClassToLaunch());

 		String[] programArgs= config.getProgramArguments();
 		addArguments(programArgs, arguments);

 		String[] envp = prependJREPath(config.getEnvironment());

 		String[] newenvp = checkClasspath(arguments, cp, envp);
 		if(newenvp != null) {
 			envp = newenvp;
 			arguments.remove(cpidx);
 			arguments.remove(cpidx);
 		}

 		String[] cmdLine= new String[arguments.size()];
 		arguments.toArray(cmdLine);

 		subMonitor.worked(1);

 		// check for cancellation
 		if (monitor.isCanceled()) {
 			return;
 		}

 		subMonitor.subTask(LaunchingMessages.StandardVMRunner_Starting_virtual_machine____3);
 		Process p= null;
 		File workingDir = getWorkingDir(config);
 		p= exec(cmdLine, workingDir, envp);
 		if (p == null) {
 			return;
 		}

 		// check for cancellation
 		if (monitor.isCanceled()) {
 			p.destroy();
 			return;
 		}

 		IProcess process= newProcess(launch, p, renderProcessLabel(cmdLine), getDefaultProcessMap());
 		process.setAttribute(IProcess.ATTR_CMDLINE, renderCommandLine(cmdLine));
 		subMonitor.worked(1);
 		subMonitor.done();
 	}

 	/**
 	 * Returns the index in the given array for the CLASSPATH variable
 	 * @param env the environment array or <code>null</code>
 	 * @return -1 or the index of the CLASSPATH variable
 	 * @since 3.6.200
 	 */
 	int getCPIndex(String[] env) {
 		if(env != null) {
 			for (int i = 0; i < env.length; i++) {
 				if(env[i].regionMatches(true, 0, "CLASSPATH=", 0, 10)) { //$NON-NLS-1$
 					return i;
 				}
 			}
 		}
 		return -1;
 	}

 	/**
 	 * Checks to see if the command / classpath needs to be shortened for Windows. Returns the modified
 	 * environment or <code>null</code> if no changes are needed.
 	 *
 	 * @param args the raw arguments from the runner
 	 * @param cp the raw classpath from the runner configuration
 	 * @param env the current environment
 	 * @return the modified environment or <code>null</code> if no changes were made
 	 * @sine 3.6.200
 	 */
 	String[] checkClasspath(List<String> args, String[] cp, String[] env) {
 		if(Platform.getOS().equals(Platform.OS_WIN32)) {
 			//count the complete command length
 			int size = 0;
 			for (String arg : args) {
 				if(arg != null) {
 					size += arg.length();
 				}
 			}
 			//greater than 32767 is a no-go
 			//see http://msdn.microsoft.com/en-us/library/windows/desktop/ms682425(v=vs.85).aspx
 			if(size > 32767) {
 				StringBuffer newcp = new StringBuffer("CLASSPATH="); //$NON-NLS-1$
 				for (int i = 0; i < cp.length; i++) {
 					newcp.append(cp[i]);
 					newcp.append(File.pathSeparatorChar);
 				}
 				String[] newenvp = null;
 				int index = -1;
 				if(env == null) {
 					Map<String, String> nenv = DebugPlugin.getDefault().getLaunchManager().getNativeEnvironment();
 					Entry<String, String> entry = null;
 					newenvp = new String[nenv.size()];
 					int idx = 0;
 					for (Iterator<Entry<String, String>> i = nenv.entrySet().iterator(); i.hasNext();) {
 						entry = i.next();
 						String value = entry.getValue();
 						if(value == null) {
 							value = ""; //$NON-NLS-1$
 						}
 						String key = entry.getKey();
 						if(key.equalsIgnoreCase("CLASSPATH")) { //$NON-NLS-1$
 							index = idx;
 						}
 						newenvp[idx] = key+'='+value;
 						idx++;
 					}
 				}
 				else {
 					newenvp = env;
 					index = getCPIndex(newenvp);
 				}
 				if(index < 0) {
 					String[] newenv = new String[newenvp.length+1];
 					System.arraycopy(newenvp, 0, newenv, 0, newenvp.length);
 					newenv[newenvp.length] = newcp.toString();
 					return newenv;
 				}
 				newenvp[index] = newcp.toString();
 				return newenvp;
 			}
 		}
 		return null;
 	}

 	/**
 	 * Prepends the correct java version variable state to the environment path for Mac VMs
 	 *
 	 * @param env the current array of environment variables to run with
 	 * @param jdkpath the path of the current jdk
 	 * @since 3.3
 	 */
 	protected String[] prependJREPath(String[] env) {
 		if (Platform.OS_MACOSX.equals(Platform.getOS())) {
 			if (fVMInstance instanceof IVMInstall2) {
 				IVMInstall2 vm = (IVMInstall2) fVMInstance;
 				String javaVersion = vm.getJavaVersion();
 				if (javaVersion != null) {
 					if (env == null) {
 						Map map = DebugPlugin.getDefault().getLaunchManager().getNativeEnvironmentCasePreserved();
 						if (map.containsKey(StandardVMDebugger.JAVA_JVM_VERSION)) {
 							String[] env2 = new String[map.size()];
 							Iterator iterator = map.entrySet().iterator();
 							int i = 0;
 							while (iterator.hasNext()) {
 								Entry entry = (Entry) iterator.next();
 								String key = (String) entry.getKey();
 								if (StandardVMDebugger.JAVA_JVM_VERSION.equals(key)) {
 									env2[i] = key + "=" + javaVersion; //$NON-NLS-1$
 								} else {
 									env2[i] = key + "=" + (String)entry.getValue(); //$NON-NLS-1$
 								}
 								i++;
 							}
 							env = env2;
 						}
 					} else {
 						for (int i = 0; i < env.length; i++) {
 							String string = env[i];
 							if (string.startsWith(StandardVMDebugger.JAVA_JVM_VERSION)) {
 								env[i]=StandardVMDebugger.JAVA_JVM_VERSION+"="+javaVersion; //$NON-NLS-1$
 								break;
 							}
 						}
 					}
 				}
 			}
 		}
 		return env;
 	}

 	/**
 	 * Adds arguments to the bootpath
 	 * @param arguments
 	 * @param config
 	 */
 	protected void addBootClassPathArguments(List arguments, VMRunnerConfiguration config) {
 		String[] prependBootCP= null;
 		String[] bootCP= null;
 		String[] appendBootCP= null;
 		Map map = config.getVMSpecificAttributesMap();
 		if (map != null) {
 			prependBootCP= (String[]) map.get(IJavaLaunchConfigurationConstants.ATTR_BOOTPATH_PREPEND);
 			bootCP= (String[]) map.get(IJavaLaunchConfigurationConstants.ATTR_BOOTPATH);
 			appendBootCP= (String[]) map.get(IJavaLaunchConfigurationConstants.ATTR_BOOTPATH_APPEND);
 		}
 		if (prependBootCP == null && bootCP == null && appendBootCP == null) {
 			// use old single attribute instead of new attributes if not specified
 			bootCP = config.getBootClassPath();
 		}
 		if (prependBootCP != null) {
 			arguments.add("-Xbootclasspath/p:" + convertClassPath(prependBootCP)); //$NON-NLS-1$
 		}
 		if (bootCP != null) {
 			if (bootCP.length > 0) {
 				arguments.add("-Xbootclasspath:" + convertClassPath(bootCP)); //$NON-NLS-1$
 			}
 		}
 		if (appendBootCP != null) {
 			arguments.add("-Xbootclasspath/a:" + convertClassPath(appendBootCP)); //$NON-NLS-1$
 		}
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2000, 2008 IBM Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jdt.internal.launching;


	import java.io.File;
	import java.util.ArrayList;
	import java.util.Date;
	import java.util.Iterator;
	import java.util.List;
	import java.util.Map;
	import java.util.Map.Entry;

	import org.eclipse.core.runtime.CoreException;
	import org.eclipse.core.runtime.IProgressMonitor;
	import org.eclipse.core.runtime.NullProgressMonitor;
	import org.eclipse.core.runtime.Platform;
	import org.eclipse.core.runtime.SubProgressMonitor;
	import org.eclipse.debug.core.DebugPlugin;
	import org.eclipse.debug.core.ILaunch;
	import org.eclipse.debug.core.model.IProcess;
	import org.eclipse.jdt.launching.AbstractVMRunner;
	import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants;
	import org.eclipse.jdt.launching.IVMInstall;
	import org.eclipse.jdt.launching.IVMInstall2;
	import org.eclipse.jdt.launching.VMRunnerConfiguration;

	import com.ibm.icu.text.DateFormat;
	import com.ibm.icu.text.MessageFormat;

	/**
	* A launcher for running Java main classes.
	*/
	public class StandardVMRunner extends AbstractVMRunner {

	/**
	* The VM install instance
	*/
	protected IVMInstall fVMInstance;

	/**
	* Constructor
	* @param vmInstance
	*/
	public StandardVMRunner(IVMInstall vmInstance) {
	fVMInstance= vmInstance;
	}

	/**
	* Returns the 'rendered' name for the current target
	* @param classToRun
	* @param host
	* @return the name for the current target
	*/
	protected String renderDebugTarget(String classToRun, int host) {
	String format= LaunchingMessages.StandardVMRunner__0__at_localhost__1__1;
	return MessageFormat.format(format, new String[] { classToRun, String.valueOf(host) });
	}

	/**
	* Returns the 'rendered' name for the specified command line
	* @param commandLine
	* @return the name for the process
	*/
	public static String renderProcessLabel(String[] commandLine) {
	String format= LaunchingMessages.StandardVMRunner__0____1___2;
	String timestamp= DateFormat.getDateTimeInstance(DateFormat.MEDIUM, DateFormat.MEDIUM).format(new Date(System.currentTimeMillis()));
	return MessageFormat.format(format, new String[] { commandLine[0], timestamp });
	}

	/**
	* Prepares the command line from the specified array of strings
	* @param commandLine
	* @return
	*/
	protected String renderCommandLine(String[] commandLine) {
	if (commandLine.length < 1)
	return ""; //$NON-NLS-1$
	StringBuffer buf= new StringBuffer();
	for (int i= 0; i < commandLine.length; i++) {
	buf.append(' ');
	char[] characters= commandLine[i].toCharArray();
	StringBuffer command= new StringBuffer();
	boolean containsSpace= false;
	for (int j = 0; j < characters.length; j++) {
	char character= characters[j];
	if (character == '\"') {
	command.append('\\');
	} else if (character == ' ') {
	containsSpace = true;
	}
	command.append(character);
	}
	if (containsSpace) {
	buf.append('\"');
	buf.append(command.toString());
	buf.append('\"');
	} else {
	buf.append(command.toString());
	}
	}
	return buf.toString();
	}

	/**
	* Adds the values of args to the given list v
	* @param args
	* @param v
	*/
	protected void addArguments(String[] args, List v) {
	if (args == null) {
	return;
	}
	for (int i= 0; i < args.length; i++) {
	v.add(args[i]);
	}
	}

	/**
	* Returns the working directory to use for the launched VM,
	* or <code>null</code> if the working directory is to be inherited
	* from the current process.
	*
	* @return the working directory to use
	* @exception CoreException if the working directory specified by
	* the configuration does not exist or is not a directory
	*/
	protected File getWorkingDir(VMRunnerConfiguration config) throws CoreException {
	String path = config.getWorkingDirectory();
	if (path == null) {
	return null;
	}
	File dir = new File(path);
	if (!dir.isDirectory()) {
	abort(MessageFormat.format(LaunchingMessages.StandardVMRunner_Specified_working_directory_does_not_exist_or_is_not_a_directory___0__3, new String[] {path}), null, IJavaLaunchConfigurationConstants.ERR_WORKING_DIRECTORY_DOES_NOT_EXIST);
	}
	return dir;
	}

	/**
	* @see VMRunner#getPluginIdentifier()
	*/
	protected String getPluginIdentifier() {
	return LaunchingPlugin.getUniqueIdentifier();
	}

	/**
	* Construct and return a String containing the full path of a java executable
	* command such as 'java' or 'javaw.exe'. If the configuration specifies an
	* explicit executable, that is used.
	*
	* @return full path to java executable
	* @exception CoreException if unable to locate an executable
	*/
	protected String constructProgramString(VMRunnerConfiguration config) throws CoreException {

	// Look for the user-specified java executable command
	String command= null;
	Map map= config.getVMSpecificAttributesMap();
	if (map != null) {
	command = (String)map.get(IJavaLaunchConfigurationConstants.ATTR_JAVA_COMMAND);
	}

	// If no java command was specified, use default executable
	if (command == null) {
	File exe = null;
	if (fVMInstance instanceof StandardVM) {
	exe = ((StandardVM)fVMInstance).getJavaExecutable();
	} else {
	exe = StandardVMType.findJavaExecutable(fVMInstance.getInstallLocation());
	}
	if (exe == null) {
	abort(MessageFormat.format(LaunchingMessages.StandardVMRunner_Unable_to_locate_executable_for__0__1, new String[]{fVMInstance.getName()}), null, IJavaLaunchConfigurationConstants.ERR_INTERNAL_ERROR);
	} else {
	return exe.getAbsolutePath();
	}
	}

	// Build the path to the java executable. First try 'bin', and if that
	// doesn't exist, try 'jre/bin'
	String installLocation = fVMInstance.getInstallLocation().getAbsolutePath() + File.separatorChar;
	File exe = new File(installLocation + "bin" + File.separatorChar + command); //$NON-NLS-1$
	if (fileExists(exe)){
	return exe.getAbsolutePath();
	}
	exe = new File(exe.getAbsolutePath() + ".exe"); //$NON-NLS-1$
	if (fileExists(exe)){
	return exe.getAbsolutePath();
	}
	exe = new File(installLocation + "jre" + File.separatorChar + "bin" + File.separatorChar + command); //$NON-NLS-1$ //$NON-NLS-2$
	if (fileExists(exe)) {
	return exe.getAbsolutePath();
	}
	exe = new File(exe.getAbsolutePath() + ".exe"); //$NON-NLS-1$
	if (fileExists(exe)) {
	return exe.getAbsolutePath();
	}

	// not found
	abort(MessageFormat.format(LaunchingMessages.StandardVMRunner_Specified_executable__0__does_not_exist_for__1__4, new String[]{command, fVMInstance.getName()}), null, IJavaLaunchConfigurationConstants.ERR_INTERNAL_ERROR);
	// NOTE: an exception will be thrown - null cannot be returned
	return null;
	}

	/**
	* Convenience method to determine if the specified file exists or not
	* @param file
	* @return true if the file indeed exists, false otherwise
	*/
	protected boolean fileExists(File file) {
	return file.exists() && file.isFile();
	}

	protected String convertClassPath(String[] cp) {
	int pathCount= 0;
	StringBuffer buf= new StringBuffer();
	if (cp.length == 0) {
	return ""; //$NON-NLS-1$
	}
	for (int i= 0; i < cp.length; i++) {
	if (pathCount > 0) {
	buf.append(File.pathSeparator);
	}
	buf.append(cp[i]);
	pathCount++;
	}
	return buf.toString();
	}

	/**
	* This method is used to ensure that the JVM file encoding matches that of the console preference for file encoding.
	* If the user explicitly declares a file encoding in the launch configuration, then that file encoding is used.
	* @param vmargs the original listing of JVM arguments
	* @return the listing of JVM arguments including file encoding if one was not specified
	*
	* @since 3.4
	*/
	protected String[] ensureEncoding(ILaunch launch, String[] vmargs) {
	boolean foundencoding = false;
	for(int i = 0; i < vmargs.length; i++) {
	if(vmargs[i].startsWith("-Dfile.encoding=")) { //$NON-NLS-1$
	foundencoding = true;
	}
	}
	if(!foundencoding) {
	String encoding = launch.getAttribute(DebugPlugin.ATTR_CONSOLE_ENCODING);
	if(encoding == null) {
	return vmargs;
	}
	String[] newargs = new String[vmargs.length+1];
	System.arraycopy(vmargs, 0, newargs, 0, vmargs.length);
	newargs[newargs.length-1] = "-Dfile.encoding="+encoding; //$NON-NLS-1$
	return newargs;
	}
	return vmargs;
	}

	/* (non-Javadoc)
	* @see org.eclipse.jdt.launching.IVMRunner#run(org.eclipse.jdt.launching.VMRunnerConfiguration, org.eclipse.debug.core.ILaunch, org.eclipse.core.runtime.IProgressMonitor)
	*/
	public void run(VMRunnerConfiguration config, ILaunch launch, IProgressMonitor monitor) throws CoreException {

	if (monitor == null) {
	monitor = new NullProgressMonitor();
	}

	IProgressMonitor subMonitor = new SubProgressMonitor(monitor, 1);
	subMonitor.beginTask(LaunchingMessages.StandardVMRunner_Launching_VM____1, 2);
	subMonitor.subTask(LaunchingMessages.StandardVMRunner_Constructing_command_line____2);

	String program= constructProgramString(config);

	List arguments= new ArrayList();
	arguments.add(program);

	// VM args are the first thing after the java program so that users can specify
	// options like '-client' & '-server' which are required to be the first option
	String[] allVMArgs = combineVmArgs(config, fVMInstance);
	addArguments(ensureEncoding(launch, allVMArgs), arguments);

	addBootClassPathArguments(arguments, config);

	String[] cp= config.getClassPath();
	int cpidx = -1;
	if (cp.length > 0) {
	cpidx = arguments.size();
	arguments.add("-classpath"); //$NON-NLS-1$
	arguments.add(convertClassPath(cp));
	}
	arguments.add(config.getClassToLaunch());

	String[] programArgs= config.getProgramArguments();
	addArguments(programArgs, arguments);

	String[] envp = prependJREPath(config.getEnvironment());

	String[] newenvp = checkClasspath(arguments, cp, envp);
	if(newenvp != null) {
	envp = newenvp;
	arguments.remove(cpidx);
	arguments.remove(cpidx);
	}

	String[] cmdLine= new String[arguments.size()];
	arguments.toArray(cmdLine);

	subMonitor.worked(1);

	// check for cancellation
	if (monitor.isCanceled()) {
	return;
	}

	subMonitor.subTask(LaunchingMessages.StandardVMRunner_Starting_virtual_machine____3);
	Process p= null;
	File workingDir = getWorkingDir(config);
	p= exec(cmdLine, workingDir, envp);
	if (p == null) {
	return;
	}

	// check for cancellation
	if (monitor.isCanceled()) {
	p.destroy();
	return;
	}

	IProcess process= newProcess(launch, p, renderProcessLabel(cmdLine), getDefaultProcessMap());
	process.setAttribute(IProcess.ATTR_CMDLINE, renderCommandLine(cmdLine));
	subMonitor.worked(1);
	subMonitor.done();
	}

	/**
	* Returns the index in the given array for the CLASSPATH variable
	* @param env the environment array or <code>null</code>
	* @return -1 or the index of the CLASSPATH variable
	* @since 3.6.200
	*/
	int getCPIndex(String[] env) {
	if(env != null) {
	for (int i = 0; i < env.length; i++) {
	if(env[i].regionMatches(true, 0, "CLASSPATH=", 0, 10)) { //$NON-NLS-1$
	return i;
	}
	}
	}
	return -1;
	}

	/**
	* Checks to see if the command / classpath needs to be shortened for Windows. Returns the modified
	* environment or <code>null</code> if no changes are needed.
	*
	* @param args the raw arguments from the runner
	* @param cp the raw classpath from the runner configuration
	* @param env the current environment
	* @return the modified environment or <code>null</code> if no changes were made
	* @sine 3.6.200
	*/
	String[] checkClasspath(List<String> args, String[] cp, String[] env) {
	if(Platform.getOS().equals(Platform.OS_WIN32)) {
	//count the complete command length
	int size = 0;
	for (String arg : args) {
	if(arg != null) {
	size += arg.length();
	}
	}
	//greater than 32767 is a no-go
	//see http://msdn.microsoft.com/en-us/library/windows/desktop/ms682425(v=vs.85).aspx
	if(size > 32767) {
	StringBuffer newcp = new StringBuffer("CLASSPATH="); //$NON-NLS-1$
	for (int i = 0; i < cp.length; i++) {
	newcp.append(cp[i]);
	newcp.append(File.pathSeparatorChar);
	}
	String[] newenvp = null;
	int index = -1;
	if(env == null) {
	Map<String, String> nenv = DebugPlugin.getDefault().getLaunchManager().getNativeEnvironment();
	Entry<String, String> entry = null;
	newenvp = new String[nenv.size()];
	int idx = 0;
	for (Iterator<Entry<String, String>> i = nenv.entrySet().iterator(); i.hasNext();) {
	entry = i.next();
	String value = entry.getValue();
	if(value == null) {
	value = ""; //$NON-NLS-1$
	}
	String key = entry.getKey();
	if(key.equalsIgnoreCase("CLASSPATH")) { //$NON-NLS-1$
	index = idx;
	}
	newenvp[idx] = key+'='+value;
	idx++;
	}
	}
	else {
	newenvp = env;
	index = getCPIndex(newenvp);
	}
	if(index < 0) {
	String[] newenv = new String[newenvp.length+1];
	System.arraycopy(newenvp, 0, newenv, 0, newenvp.length);
	newenv[newenvp.length] = newcp.toString();
	return newenv;
	}
	newenvp[index] = newcp.toString();
	return newenvp;
	}
	}
	return null;
	}

	/**
	* Prepends the correct java version variable state to the environment path for Mac VMs
	*
	* @param env the current array of environment variables to run with
	* @param jdkpath the path of the current jdk
	* @since 3.3
	*/
	protected String[] prependJREPath(String[] env) {
	if (Platform.OS_MACOSX.equals(Platform.getOS())) {
	if (fVMInstance instanceof IVMInstall2) {
	IVMInstall2 vm = (IVMInstall2) fVMInstance;
	String javaVersion = vm.getJavaVersion();
	if (javaVersion != null) {
	if (env == null) {
	Map map = DebugPlugin.getDefault().getLaunchManager().getNativeEnvironmentCasePreserved();
	if (map.containsKey(StandardVMDebugger.JAVA_JVM_VERSION)) {
	String[] env2 = new String[map.size()];
	Iterator iterator = map.entrySet().iterator();
	int i = 0;
	while (iterator.hasNext()) {
	Entry entry = (Entry) iterator.next();
	String key = (String) entry.getKey();
	if (StandardVMDebugger.JAVA_JVM_VERSION.equals(key)) {
	env2[i] = key + "=" + javaVersion; //$NON-NLS-1$
	} else {
	env2[i] = key + "=" + (String)entry.getValue(); //$NON-NLS-1$
	}
	i++;
	}
	env = env2;
	}
	} else {
	for (int i = 0; i < env.length; i++) {
	String string = env[i];
	if (string.startsWith(StandardVMDebugger.JAVA_JVM_VERSION)) {
	env[i]=StandardVMDebugger.JAVA_JVM_VERSION+"="+javaVersion; //$NON-NLS-1$
	break;
	}
	}
	}
	}
	}
	}
	return env;
	}

	/**
	* Adds arguments to the bootpath
	* @param arguments
	* @param config
	*/
	protected void addBootClassPathArguments(List arguments, VMRunnerConfiguration config) {
	String[] prependBootCP= null;
	String[] bootCP= null;
	String[] appendBootCP= null;
	Map map = config.getVMSpecificAttributesMap();
	if (map != null) {
	prependBootCP= (String[]) map.get(IJavaLaunchConfigurationConstants.ATTR_BOOTPATH_PREPEND);
	bootCP= (String[]) map.get(IJavaLaunchConfigurationConstants.ATTR_BOOTPATH);
	appendBootCP= (String[]) map.get(IJavaLaunchConfigurationConstants.ATTR_BOOTPATH_APPEND);
	}
	if (prependBootCP == null && bootCP == null && appendBootCP == null) {
	// use old single attribute instead of new attributes if not specified
	bootCP = config.getBootClassPath();
	}
	if (prependBootCP != null) {
	arguments.add("-Xbootclasspath/p:" + convertClassPath(prependBootCP)); //$NON-NLS-1$
	}
	if (bootCP != null) {
	if (bootCP.length > 0) {
	arguments.add("-Xbootclasspath:" + convertClassPath(bootCP)); //$NON-NLS-1$
	}
	}
	if (appendBootCP != null) {
	arguments.add("-Xbootclasspath/a:" + convertClassPath(appendBootCP)); //$NON-NLS-1$
	}
	}

	}