Package io.joshworks.snappy.maven.tools

Class MainClassFinder

java.lang.Object

io.joshworks.snappy.maven.tools.MainClassFinder

public abstract class MainClassFinder
extends java.lang.Object

Finds any class with a public static main method by performing a breadth first search.

Author:

Phillip Webb

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	MainClassFinder.ClassNameCallback<T>	Callback interface used to receive class names.

Constructor Summary

Constructors

Constructor	Description
MainClassFinder()

Method Summary

Modifier and Type	Method	Description
static java.lang.String	findMainClass(java.io.File rootFolder)	Find the main class from a given folder.
static java.lang.String	findMainClass(java.util.jar.JarFile jarFile, java.lang.String classesLocation)	Find the main class in a given jar file.
static java.lang.String	findSingleMainClass(java.io.File rootFolder)	Find a single main class from a given folder.
static java.lang.String	findSingleMainClass(java.util.jar.JarFile jarFile, java.lang.String classesLocation)	Find a single main class in a given jar file.

Methods inherited from class java.lang.Object

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

Constructor Detail

MainClassFinder

public MainClassFinder()

Method Detail

findMainClass

public static java.lang.String findMainClass(java.io.File rootFolder)
                                      throws java.io.IOException

Find the main class from a given folder.

Parameters:

rootFolder - the root folder to search

Returns:

the main class or null

Throws:

java.io.IOException - if the folder cannot be read

findSingleMainClass

public static java.lang.String findSingleMainClass(java.io.File rootFolder)
                                            throws java.io.IOException

Find a single main class from a given folder.

Parameters:

rootFolder - the root folder to search

Returns:

the main class or null

Throws:

java.io.IOException - if the folder cannot be read

findMainClass

public static java.lang.String findMainClass(java.util.jar.JarFile jarFile,
                                             java.lang.String classesLocation)
                                      throws java.io.IOException

Find the main class in a given jar file.

Parameters:

jarFile - the jar file to search

classesLocation - the location within the jar containing classes

Returns:

the main class or null

Throws:

java.io.IOException - if the jar file cannot be read

findSingleMainClass

public static java.lang.String findSingleMainClass(java.util.jar.JarFile jarFile,
                                                   java.lang.String classesLocation)
                                            throws java.io.IOException

Find a single main class in a given jar file.

Parameters:

jarFile - the jar file to search

classesLocation - the location within the jar containing classes

Returns:

the main class or null

Throws:

java.io.IOException - if the jar file cannot be read