Bug 29003 Preferences 'Output Folder Name' needs to allow '/' in the path [build path]
In the window/preferences/Java/New Project panel, when 'Folders' radio button is set, the 'output folder name' cannot be set to something like 'WEB- INF/classes'. The error message "'/' is an invalid character" appears. However, when setting the output path on the project (project/properties), 'WEB- INF/classes' is allowed, as the '/' is valid. Please change the window/preferences to allow a '/' in output folder name, so this value can be set by default.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/NewJavaProjectPreferencePage.java
private static final String SRCBIN_FOLDERS_IN_NEWPROJ= PreferenceConstants.SRCBIN_FOLDERS_IN_NEWPROJ;
	private static final String SRCBIN_SRCNAME= PreferenceConstants.SRCBIN_SRCNAME;
	private static final String SRCBIN_BINNAME= PreferenceConstants.SRCBIN_BINNAME;
	private static final String CLASSPATH_JRELIBRARY_INDEX= PreferenceConstants.NEWPROJECT_JRELIBRARY_INDEX;
	private static final String CLASSPATH_JRELIBRARY_LIST= PreferenceConstants.NEWPROJECT_JRELIBRARY_LIST;
	/**
	 * @deprecated Inline to avoid reference to preference page
	 */
	public static boolean useSrcAndBinFolders() {
		return PreferenceConstants.getPreferenceStore().getBoolean(PreferenceConstants.SRCBIN_FOLDERS_IN_NEWPROJ);
	}