Java Class Load getClasses(String input)

Description

get Classes

License

Open Source License

Parameter

Parameter	Description
input	The tag to get the classes out of.

Return

An empty list if there is no class name in the tag name, otherwise the classes.

Declaration

public static List<String> getClasses(String input) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.*;

public class Main {
    /**//ww w .j ava2 s  . co  m
     * @param input
     *          The tag to get the classes out of.
     * @return An empty list if there is no class name in the tag name, otherwise the classes.
     */
    public static List<String> getClasses(String input) {
        if (!input.contains("."))
            return Collections.emptyList(); // check to see if it even has a dot

        ArrayList<String> classes = new ArrayList<>();

        // keep searching for new classes
        while (input.contains(".")) {
            input = input.substring(input.indexOf('.') + 1); // trim down the string

            // slightly less annoying to just do it down here than in every branch up there
            classes.add("." + input.substring(0, endOfType(input)));
        }

        return Collections.unmodifiableList(classes);
    }

    /**
     * Finds where the type ends (i.e. a . or # appears and ends the current element)
     *
     * @param input
     *          The input to process.
     * @return Where the closest # or . is or the end of line.
     */
    private static int endOfType(String input) {
        int nextClass = input.indexOf('.'); // find the next class
        int nextID = input.indexOf('#'); // find the next id
        int nextInstructor = input.indexOf('&'); // find the next instructor

        // we're done with this loop, none were found
        if (nextClass == -1 && nextID == -1 && nextInstructor == -1) {
            return input.length();
        }

        // invalidate all of these so that min() returns the closest one
        if (nextClass == -1)
            nextClass = Integer.MAX_VALUE;
        if (nextID == -1)
            nextID = Integer.MAX_VALUE;
        if (nextInstructor == -1)
            nextInstructor = Integer.MAX_VALUE;

        // return the index closest to the beginning
        return Math.min(nextClass, Math.min(nextID, nextInstructor));
    }
}

Related

1. getClass(String upnpDataType)
2. getClassDescriptor(Class type)
3. getClasses(Class infoClass)
4. getClasses(Class t)
5. getClasses(Object... objects)
6. getClassesFromPaths(String[] classpaths)
7. getClassesOfType(T[] l, Class type)
8. getClassesTree(Class clazz)
9. getClassForDomain(String domain)