Class ApplicationUtil

java.lang.Object

org.summerboot.jexpress.util.ApplicationUtil

public class ApplicationUtil
extends Object

Author:

Changski Tie Zheng Zhang 张铁铮, 魏泽北, 杜旺财, 杜富贵

Field Summary

Fields

Modifier and Type	Field	Description
static final String[]	EMPTY_ARGS
protected static final String	JAVA_COMMAND_SUN	Sun property pointing the main class and its arguments.
static final String	RESOURCE_PATH

Constructor Summary

Constructors

Constructor	Description
ApplicationUtil()

Method Summary

Modifier and Type	Method	Description
static Map<Object, Set<String>>	checkDuplicateFields(Class errorCodeClass, Class fieldClass)
static Path	createIfNotExist(String location, ClassLoader classLoader, String srcFileName, String destFileName)
static String[]	getApplicationArgs()
static Set<String>	getClassNamesFromJarFile(File jarFile)
static Properties	getPropertiesFromResource(String srcFileName, ClassLoader classLoader)
static String	getServerName(boolean exitWhenFail)
static Set<Class<?>>	loadClassFromJarFile(File jarFile, boolean failOnUndefinedClasses)	CWE-470 warning: use with caution, validate the class name against a combination of white and black lists to ensure that only expeted classes are loaded
static void	RTO(int code, String msg, Throwable ex)	Rejected Takeoff
static boolean	scanJVM_StartCommand(StringBuilder cmd)	java -XshowSettings:properties -version

Methods inherited from class Object

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

Field Details

EMPTY_ARGS

public static final String[] EMPTY_ARGS

JAVA_COMMAND_SUN

protected static final String JAVA_COMMAND_SUN

Sun property pointing the main class and its arguments. Might not be defined on non Hotspot VM implementations.

See Also:

• Constant Field Values

RESOURCE_PATH

public static final String RESOURCE_PATH

See Also:

• Constant Field Values

Constructor Details

ApplicationUtil

public ApplicationUtil()

Method Details

getApplicationArgs

public static String[] getApplicationArgs()

scanJVM_StartCommand

public static boolean scanJVM_StartCommand(StringBuilder cmd)

java -XshowSettings:properties -version

Parameters:

cmd -

Returns:

true if JMX is required

checkDuplicateFields

public static Map<Object, Set<String>> checkDuplicateFields(Class errorCodeClass,
 Class fieldClass)
                                                     throws IllegalArgumentException,
IllegalAccessException

Throws:

IllegalArgumentException

IllegalAccessException

getServerName

public static String getServerName(boolean exitWhenFail)

getClassNamesFromJarFile

public static Set<String> getClassNamesFromJarFile(File jarFile)
                                            throws IOException

Throws:

IOException

loadClassFromJarFile

public static Set<Class<?>> loadClassFromJarFile(File jarFile,
 boolean failOnUndefinedClasses)
                                          throws IOException

CWE-470 warning: use with caution, validate the class name against a combination of white and black lists to ensure that only expeted classes are loaded

Parameters:

jarFile -

failOnUndefinedClasses -

Returns:

Throws:

IOException

getPropertiesFromResource

public static Properties getPropertiesFromResource(String srcFileName,
 ClassLoader classLoader)

createIfNotExist

public static Path createIfNotExist(String location,
 ClassLoader classLoader,
 String srcFileName,
 String destFileName)

RTO

public static void RTO(int code,
 String msg,
 Throwable ex)

Rejected Takeoff

Parameters:

code -

msg -

ex -