org.springframework.boot.loader.tools

Class MainClassFinder

java.lang.Object

org.springframework.boot.loader.tools.MainClassFinder

public abstract class MainClassFinder
extends 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 and Description
static interface	MainClassFinder.ClassNameCallback<T> Callback interface used to receive class names.

Constructor Summary

Constructors

Constructor and Description
MainClassFinder()

Method Summary

Methods

Modifier and Type	Method and Description
static <T> T	doWithMainClasses(File rootFolder, MainClassFinder.ClassNameCallback<T> callback) Perform the given callback operation on all main classes from the given root folder.
static <T> T	doWithMainClasses(JarFile jarFile, String classesLocation, MainClassFinder.ClassNameCallback<T> callback) Perform the given callback operation on all main classes from the given jar.
static String	findMainClass(File rootFolder) Find the main class from a given folder.
static String	findMainClass(JarFile jarFile, String classesLocation) Find the 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 String findMainClass(File rootFolder)
                            throws IOException

Find the main class from a given folder.

Parameters:

rootFolder - the root folder to search

Returns:

the main class or null

Throws:

IOException

doWithMainClasses

public static <T> T doWithMainClasses(File rootFolder,
                      MainClassFinder.ClassNameCallback<T> callback)
                           throws IOException

Perform the given callback operation on all main classes from the given root folder.

Parameters:

rootFolder - the root folder

callback - the callback

Returns:

the first callback result or null

Throws:

IOException

findMainClass

public static String findMainClass(JarFile jarFile,
                   String classesLocation)
                            throws 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:

IOException

doWithMainClasses

public static <T> T doWithMainClasses(JarFile jarFile,
                      String classesLocation,
                      MainClassFinder.ClassNameCallback<T> callback)
                           throws IOException

Perform the given callback operation on all main classes from the given jar.

Parameters:

jarFile - the jar file to search

classesLocation - the location within the jar containing classes

Returns:

the first callback result or null

Throws:

IOException