org.apache.bcel.util

Class ModularRuntimeImage

java.lang.Object

org.apache.bcel.util.ModularRuntimeImage

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class ModularRuntimeImage
extends java.lang.Object
implements java.io.Closeable

Wraps a Java 9 JEP 220 modular runtime image. Requires the JRT NIO file system.

Since:

6.3

Field Summary

Fields

Modifier and Type	Field and Description
private java.net.URLClassLoader	classLoader
private java.nio.file.FileSystem	fileSystem
(package private) static java.lang.String	MODULES_PATH
(package private) static java.lang.String	PACKAGES_PATH

Constructor Summary

Constructors

Modifier	Constructor and Description
	ModularRuntimeImage() Constructs a default instance.
	ModularRuntimeImage(java.lang.String javaHome) Constructs an instance using the JRT file system implementation from a specific Java Home.
private	ModularRuntimeImage(java.net.URLClassLoader cl, java.nio.file.FileSystem fs)

Method Summary

Modifier and Type	Method and Description
void	close()
java.nio.file.FileSystem	getFileSystem()
java.util.List<java.nio.file.Path>	list(java.nio.file.Path dirPath) Lists all entries in the given directory.
java.util.List<java.nio.file.Path>	list(java.lang.String dirName) Lists all entries in the given directory.
java.util.List<java.nio.file.Path>	modules() Lists all modules.
java.util.List<java.nio.file.Path>	packages() Lists all packages.

Methods inherited from class java.lang.Object

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

Field Detail

MODULES_PATH

static final java.lang.String MODULES_PATH

PACKAGES_PATH

static final java.lang.String PACKAGES_PATH

classLoader

private final java.net.URLClassLoader classLoader

fileSystem

private final java.nio.file.FileSystem fileSystem

Constructor Detail

ModularRuntimeImage

public ModularRuntimeImage()
                    throws java.io.IOException

Constructs a default instance.

Throws:

java.io.IOException - an I/O error occurs accessing the file system

ModularRuntimeImage

public ModularRuntimeImage(java.lang.String javaHome)
                    throws java.io.IOException

Constructs an instance using the JRT file system implementation from a specific Java Home.

Parameters:

javaHome - Path to a Java 9 or greater home.

Throws:

java.io.IOException - an I/O error occurs accessing the file system

ModularRuntimeImage

private ModularRuntimeImage(java.net.URLClassLoader cl,
                            java.nio.file.FileSystem fs)

Method Detail

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.io.IOException

list

public java.util.List<java.nio.file.Path> list(java.nio.file.Path dirPath)
                                        throws java.io.IOException

Lists all entries in the given directory.

Parameters:

dirPath - directory path.

Returns:

a list of dir entries if an I/O error occurs

Throws:

java.io.IOException - an I/O error occurs accessing the file system

list

public java.util.List<java.nio.file.Path> list(java.lang.String dirName)
                                        throws java.io.IOException

Lists all entries in the given directory.

Parameters:

dirName - directory path.

Returns:

a list of dir entries if an I/O error occurs

Throws:

java.io.IOException - an I/O error occurs accessing the file system

modules

public java.util.List<java.nio.file.Path> modules()
                                           throws java.io.IOException

Lists all modules.

Returns:

a list of modules

Throws:

java.io.IOException - an I/O error occurs accessing the file system

packages

public java.util.List<java.nio.file.Path> packages()
                                            throws java.io.IOException

Lists all packages.

Returns:

a list of modules

Throws:

java.io.IOException - an I/O error occurs accessing the file system

getFileSystem

public java.nio.file.FileSystem getFileSystem()