Associate a file extension with Java JRE7 for Mac

Question

I would like to enable the open file associated with my application by double-clicking on the Mac. This question has been asked (many) times, see, For example, Double-click a document file in Mac OS X to open a Java application

However, it seems that changes have occurred since 2009 (when the decision was published). This solution was effectively based on a 2004 article https://today.java.net/pub/a/today/2004/01/05/swing.html and relied on two pieces of the puzzle:
1. A Java program should register a file open event and act accordingly. This was done using application adapters and com.apple.eawt applications. 2. The OS should be familiar with the extension that runs with CFBundleDocumentTypes enter the package .plist.

The constructs used by com.apple.eawt in 2004 are depreciated, as mentioned in several discussions, including What is the alternative to using the deprecated com.apple.eawt.ApplicationAdapter in Java Swing applications on a Mac? (February 11) It is noted that OpenFilesHandler replaces worn-out designs. The link to the API document mentioned in the answer no longer works, so it’s not immediately clear how to use this construct. I found the following link explaining the reasons for the impairment, but the documentation link is also deprecated: http://lists.apple.com/archives/java-dev/2012/Jan/msg00101.html

I could not find online documentation for the updated API. The Apple Developer site also refers to examples in X code that are not in the version I have (5.0.2)

(2012) https://stackoverflow.com/questions/8857431/java-mac-jdk-7-beta-apple-application-listener-no-longer-works OpenFilesEvent jdk6 jdk7-, , jdk7-.

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openFileEvent MacOSX ( )

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, CFBundleDocumentTypes UTExportedTypeDeclarations. .

app bundler .plist, .plist. , info.plist  info.plist:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-  1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>JavaAppLauncher</string>
<key>CFBundleIconFile</key>
<string>myIcons.icns</string>
<key>CFBundleIdentifier</key>
<string>mypackage.MainClass</string>
<key>CFBundleDisplayName</key>
<string>MyProgram</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>ProgramName</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>1</string>
<key>NSHumanReadableCopyright</key>
<string>NOTICES.txt</string>
<key>JVMRuntime</key>
<string>jdk1.7.0_21.jdk</string>
<key>JVMMainClassName</key>
<string>mypackage.MainClass</string>
<key>JVMOptions</key>
<array/>
<key>JVMArguments</key>
<array/>
<key>UTExportedTypeDeclarations</key>
<dict>
            <key>UTTypeIdentifier</key>
    <string>com.myCompany.xxx</string>
    <key>UTTypeReferenceURL</key>
    <string>http://myCompany.com/xxx.html</string>
    <key>UTTypeDescription</key>
    <string>My program file</string>
    <key>UTTypeIconFile</key>
            <array>
    <string>myIcons.icns</string>
            </array>
    <key>UTTypeConformsTo</key>
            <array>
    <string>com.apple.package</string>
             </array>
    <key>UTTypeTagSpecification</key>
    <dict>
        <key>public.filename-extension</key>
        <string>apn</string>
    </dict>
</dict>
<key>CFBundleDocumentTypes</key>
<dict>
    <key>CFBundleTypeName</key>
    <string>y program file</string>
    <key>CFBundleTypeIconFiles</key>
            <array>
    <string>myIcons.icns</string>
             </array>
            <key>CFBundleTypeRole</key>
             <string>Editor</string>
    <key>LSHandlerRank</key>
    <string>Owner</string>
    <key>LSItemContentTypes</key>
    <string>com.myCompany.xxx</string>
</dict>
</dict>
</plist>

info.plist : , , .

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- http://www.tekrevue.com/tip/rebuild-launchservices-fix-duplicate-entries-os-xs-open-menu/ .

, , openFileEvent MacOSX ( ) OpenFilesHandler, UTExportedTypeDeclarations . whiskeyspider , , . , .

Answer 1

OpenFilesHandler , CFBundleDocumentTypes UTExportedTypeDeclarations Info.plist(. ).

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Mac, OpenFilesHandler , . : openFileEvent MacOSX ( )

FileSaving, readFile, File . :

public final static boolean SYSTEMISMAC=(System.getProperty("os.name")).startsWith("M"); //   treating Mac separately
static protected FileSaving initialFiling;
........
initialFiling = new FileSaving(); // Initializing  
if(SYSTEMISMAC){
     Application a = Application.getApplication();
     a.setOpenFileHandler(new MacFiles(initialFiling) );
 }
 ……………

MacFiles, OpenFilesHandler:

import java.io.File;
import java.util.List;
import com.apple.eawt.AppEvent.OpenFilesEvent;
import com.apple.eawt.Application;
import com.apple.eawt.OpenFilesHandler;
public class MacFiles implements OpenFilesHandler{
private List<File> files;
private FileSaving myFiling;
public MacFiles(FileSaving filing) {//
    Application.getApplication().setOpenFileHandler(this);
    myFiling=filing;
}
public List<File> getFiles() {
    return files;
}
@Override
public void openFiles(OpenFilesEvent event) {
  files = event.getFiles();
  File myFile=new File(files.get(0).getAbsolutePath());
  myFiling.readFile(myFile,true);  
}
}

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Answer 2

Info.plist, , CFBundleTypeIconFiles . CFBundleTypeIconFile, .

<dict>
<key>CFBundleTypeName</key>
    <string>y program file</string>
<key>CFBundleTypeIconFile</key>
    <string>myIcons.icns</string>
<key>CFBundleTypeRole</key>
    <string>Editor</string>
<key>LSHandlerRank</key>
<string>Owner</string>
<key>LSItemContentTypes</key>
    <array>
        <string>com.myCompany.xxx</string>
    </array>
</dict>

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