openjdk 9 in ios - any sample xcode project or any sample using JavaLauncher interface?

[Bob Vandette]

Hi Grigory,

We have been pretty focused on just keeping up with the evolving JDK 9 sources
and haven’t yet had enough time to devote to getting samples into the repository
or document the project structure requirements.

In general we require the same JRE structure that you’d see on non Mobile platforms
to be maintained with one exception.  All static libraries are only used when the project is
being built and should not be marked for inclusion in the application package.

Here’s an old Xcode project which I published before we integrated the JavaLauncher into
the mobile repo.  It will at least give you an idea how the Java binaries are packaged.

http://cr.openjdk.java.net/~bobv/mobile/j1/xcode/RunJava.tar.gz

If you’d like to convert this to use the JavaLauncher, you should take a look at JavaLauncher.h
which described the JavaLauncher Framework interface.

Here’s an example of how it is used:

static void javaLauncherCallback(const char *exception_msg, int error_code, void *app_data)
{
    NSLog(@"HelloWorld::javaLauncherCallback: Received exception.");
    NSLog(@"HelloWorld::javaLauncherCallback: Exception msg: %@.",
          [NSString stringWithUTF8String: exception_msg]);
}

static JavaArgs *java_args = NULL;

@implementation HelloWorld

+(void)initialize
{
    if (java_args == NULL) {
        java_args = [[[JavaArgs alloc] init] retain];
        java_args.callback = javaLauncherCallback;
    }
}
+(void)createJavaVM
{
    [JavaLauncher createJavaVM:java_args];
}
+(void)callJava
{
    [JavaLauncher performSelectorInBackground:@selector(callJava:)
        withObject:java_args];
}

@end

Let me know if you have any questions.
Bob.


> On Mar 4, 2016, at 4:57 PM, Grigory Ptashko <grigory.ptashko at gmail.com> wrote:
> 
> Hello.
> 
> Does anyone have any examples on how to use java from jdk9 on ios?
> I’ve built the jdk and jre, found the Java Launcher objective-c interface.
> But I cannot understand how can I use them in the xcode project.
> 
> I can add the JavaLauncher.framework to my project and include JavaLauncher.h.
> But what libraries should I link my target against?
> 
> Here’s the jre tree. What am I supposed to do with all these files in terms of adding them to
> my xcode project? All the *.a and *.jimage files?
> 
> ├── bin
> │   └── unpack200
> ├── conf
> │   ├── logging.properties
> │   ├── management
> │   │   ├── jmxremote.access
> │   │   ├── jmxremote.password.template
> │   │   ├── management.properties
> │   │   └── snmp.acl.template
> │   ├── net.properties
> │   ├── security
> │   │   ├── java.policy
> │   │   └── java.security
> │   └── sound.properties
> ├── lib
> │   ├── amd64
> │   │   ├── jli
> │   │   │   ├── libjli.a
> │   │   │   └── libjli.symbols
> │   │   ├── jvm.cfg
> │   │   ├── libfreetype.a.6
> │   │   ├── libj2gss.a
> │   │   ├── libj2gss.symbols
> │   │   ├── libj2pcsc.a
> │   │   ├── libj2pcsc.symbols
> │   │   ├── libj2pkcs11.a
> │   │   ├── libj2pkcs11.symbols
> │   │   ├── libjaas_unix.a
> │   │   ├── libjaas_unix.symbols
> │   │   ├── libjava.a
> │   │   ├── libjava.symbols
> │   │   ├── libjimage.a
> │   │   ├── libjimage.symbols
> │   │   ├── libmanagement.a
> │   │   ├── libmanagement.symbols
> │   │   ├── libnet.a
> │   │   ├── libnet.symbols
> │   │   ├── libnio.a
> │   │   ├── libnio.symbols
> │   │   ├── libsunec.a
> │   │   ├── libsunec.symbols
> │   │   ├── libunpack.a
> │   │   ├── libunpack.symbols
> │   │   ├── libverify.a
> │   │   ├── libverify.symbols
> │   │   ├── libzip.a
> │   │   ├── libzip.symbols
> │   │   └── minimal
> │   │       ├── Xusage.txt
> │   │       ├── libjvm.a
> │   │       └── libjvm.symbols
> │   ├── classlist
> │   ├── java.base.symbols
> │   ├── modules
> │   │   ├── appmodules.jimage
> │   │   ├── bootmodules.jimage
> │   │   └── extmodules.jimage
> │   ├── psfont.properties.ja
> │   ├── psfontj2d.properties
> │   ├── security
> │   │   ├── US_export_policy.jar
> │   │   ├── blacklisted.certs
> │   │   ├── cacerts
> │   │   └── local_policy.jar
> │   └── tzdb.dat
> 
> Please, can anyone shed some light on it?
> 
> Thank you.
> 
> --
> Best regards,
> Grigory Ptashko
> 
> +7 (916) 1489766
> grigory.ptashko at gmail.com
> facebook.com/GrigoryPtashko
>