com.tplan.robot.util

Class LazyClassLoader

java.lang.Object

java.lang.ClassLoader

java.security.SecureClassLoader

java.net.URLClassLoader

com.tplan.robot.util.LazyClassLoader

All Implemented Interfaces:

Closeable, AutoCloseable

public final class LazyClassLoader
extends URLClassLoader

Robot class loader. To address tightened security introduced in Java 9 all classes relying on dynamically loaded libraries (JAR files) must be instantiated using this loader.

Since:

4.4

T-Plan Robot Enterprise, (C) 2009-2022 T-Plan Limited. All rights reserved.

Method Summary

Modifier and Type	Method and Description
static void	addResource(File f) Add a file to the class path.
static void	addResource(URL u) Add a resource URL to the class path.
static Class	forName(String clazz) Load a class by name.
static ClassLoader	getInstance() Get shared loader instance.
static boolean	isJava9() Indicate whether Java is version 9 or higher.
static boolean	isJGraphXMissing() Indicate if the JGraphX library is loaded or missing.
static boolean	testLibs(StringBuilder b, boolean html)
String	toString()

Methods inherited from class java.net.URLClassLoader

close, findResource, findResources, getResourceAsStream, getURLs, newInstance, newInstance

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, getParent, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

isJava9

public static boolean isJava9()

Indicate whether Java is version 9 or higher.

Returns:

true if Java is 9+ or false otherwise.

isJGraphXMissing

public static boolean isJGraphXMissing()

Indicate if the JGraphX library is loaded or missing.

Returns:

true if missing or false if present.

Since:

6.0.1

getInstance

public static ClassLoader getInstance()

Get shared loader instance.

Returns:

the shared loader instance.

forName

public static Class forName(String clazz)
                     throws ClassNotFoundException

Load a class by name.

Parameters:

clazz - the class name.

Returns:

the class.

Throws:

ClassNotFoundException - when the class can not be loaded.

addResource

public static void addResource(URL u)

Add a resource URL to the class path.

Parameters:

u - a resource.

addResource

public static void addResource(File f)
                        throws MalformedURLException

Add a file to the class path.

Parameters:

f - a file.

Throws:

MalformedURLException - if an error is thrown during conversion of the argument file to a URL.

testLibs

public static boolean testLibs(StringBuilder b,
                               boolean html)

toString

public String toString()

Overrides:

toString in class Object