How does the Java Gernerics being implemented?

Generic programming is supported in Java, and I want to know how does this feature being considered and implemented? Any one can give me some introduction or resources link? Thank you.
Edited by: AaronZhang on Aug 25, 2008 9:37 PM

Thank you ! But I've gotten this tutorial and actaully want to known the implementation mechanism of java generic.

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How does the Java card simulator work? and other misc questions

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In this .scr file (APDU Script), I understand the first 4 bytes, it means to create an Applet, but what about the rest? I know there are some intermixes of lengths and AIDs, I just can't decipher this.
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Thanks
Jack

At first blush,
I have these when executing the RMIPurse sample according to the user guide
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported type long of field interfaceHash.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type long of method dispatch.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.SkeletonMismatchException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Skel: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported type long of field interfaceHash.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported type long of field serialVersionUID.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode new in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokespecial in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.rmi.server.Operation.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode pop in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode anewarray in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode ifnull in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokestatic in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method class$(java.lang.String) of class com.sun.jcclassic.samples.rmi.PurseImpl_Stub.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode aastore in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported bytecode invokevirtual in clinit method.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method getMethod(java.lang.String, java.lang.Class[]) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode goto in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unhandled bytecode pop in clinit method, try a different compiler.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of method class$.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method forName(java.lang.String) of class java.lang.Class.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported return type String of invoked method getMessage() of class java.lang.Throwable.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String) of class java.lang.NoClassDefFoundError.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method invoke(java.rmi.Remote, java.lang.reflect.Method, java.lang.Object[], long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method newCall(java.rmi.server.RemoteObject, java.rmi.server.Operation[], int, long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnexpectedException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method invoke(java.rmi.Remote, java.lang.reflect.Method, java.lang.Object[], long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method newCall(java.rmi.server.RemoteObject, java.rmi.server.Operation[], int, long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnexpectedException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method invoke(java.rmi.Remote, java.lang.reflect.Method, java.lang.Object[], long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method newCall(java.rmi.server.RemoteObject, java.rmi.server.Operation[], int, long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnexpectedException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method invoke(java.rmi.Remote, java.lang.reflect.Method, java.lang.Object[], long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method newCall(java.rmi.server.RemoteObject, java.rmi.server.Operation[], int, long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnmarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnexpectedException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method invoke(java.rmi.Remote, java.lang.reflect.Method, java.lang.Object[], long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported long type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type long of invoked method newCall(java.rmi.server.RemoteObject, java.rmi.server.Operation[], int, long) of class java.rmi.server.RemoteRef.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.MarshalException.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported String type constant.
[convert] error: com.sun.jcclassic.samples.rmi.PurseImpl_Stub: unsupported parameter type String of invoked method <init>(java.lang.String, java.lang.Exception) of class java.rmi.UnexpectedException.At the first command prompt, I typed cref -o demoee
and at the next command prompt, I typed ant all, and I got those error messages.
Thanks, you are so nice to help :)
Jack

How does the Java Card simulator work? (Using NetBeans)

Hi,
I'm using NetBeans and am trying to simulate:
Someone powering up the card, saving a value, and powering down... And then they power it up again, get the value, and power down.
When I edit my APDU script to do the second part, the value I entered the first time is never stored, which probably means that when I 'run' my code, my application is loaded and everything is initialized again.
How do I edit NetBeans to not install the application every time I hit 'run'? And not to initialize the values, so that when i power it up again, I can get a value stored in a previous running of a script?
When I use powerup, powerdown and then powerup again, NetBeans doesn't powerup the simulator the second time. So understanding the Java Card Simulator would also help... where it is, how it runs, what options it runs with, etc.

Hi Shane,
I have not read anywhere else that the JC3 cards are not available, thank you so much for that tip! I am not doing it for research, but I am working on this alone and will have to deploy a card later on. I will be getting all the right versions now.
I'll ask the question then, using just the JCDK:
If I want to save a value on the card, and then need it at a later time, how do I go about it. Do I do the following?
(1) Install the application on the card. (I know how to do this)
(2) Run the simulator using -o "eeprom data filename"
(3) Save the value using the APDU calls and Java code on the card + close connection.
Code:
public class MyApp extends Applet {
    private static byte[] data = {0x00, 0x00, 0x00};
    // Install method, method to register, process method that can call saveData or recallData, etc
    public static void saveData()
       // code to change data
       data = {0x01, 0x01, 0x01};
    public static byte[] recallData()
       // code to return data
       return data;
}(4) Run the simulator using -i "eeprom data filename". get the value using recallData().
Will selecting the app not make data initialize to {0x00, 0x00, 0x00} again?
If I know this is the correct way of going about it, then I can work towards it getting done.
From other examples I can see that this is probably the way it should work, but my data array always returns as {0x00, 0x00, 0x00}.

How does the servlet implement the multi-thread feature?

There is only one instance of every servlet in one wep application.
When several clients invoke the doPost() method of the same servlet,the servlet can process their request respectively.
So there much multi threads of one servelt.
But the Servlet doesn't implement the Runnable interface of extends the Thread class.
I wan't to know,how does the servlet/servlet container implement the multi-thread feature?

Hi johnnylzb
There is only one servlet instance existing.
(assuming u have <load-on-startup>1</load-on-startup>)
The server creates a thread for every request ..
and all the threads access the same servlet instance.
For this its not necessary for the Servlet to extend Thread or Runnable.
hope this helps

How does the notify() call work in Java?

Hi!
Can someone help me:
How does the notify() call work in Java?
H�var

Java's Thread Tutorial
JavaWorld: Introduction to Java threads
IBM: Introduction to Java threads
Google: java+threads+tutorial

How does the JRE determine java.home?

I recently upgraded from jre 1.4.1 to 1.4.2.
I'm having problems with applets, and I've traced the problem to the fact that java.home still points to the old JRE directory. Here is a line from the system properties dump in the java console:
java.home = C:\PROGRA~1\Java\J2RE14~1.2_0
That directory doesn't exist anymore. The directory that contains the jre is now c:\program files\Java\j2re1.4.2_01.
I properly uninstalled 1.4.1, and I've tried uninstalling everything java related, manually deleting everything I can find (files, folders, registry settings) related to java or sun, and reinstalling, and this problem is still there.
I've also tried setting the property in the JAVA_HOME environment variable as well as setting it as a runtime option in the java control panel ( -Djava.home=. . .). No dice.
How does the JRE determine java.home? Is there a way to manually set the path?

Check regedit with the oldvalueThanks -- I tried that. The old value is not in the registry, and all of the registry settings for java.home point to the correct directory. The java.home value that ends up inside the plugin must be determined some other way (at least in 1.4.2).
If anyone out there knows where it comes from, please let me know!
Thanks.

HT204406 how does the iTune icon present itself onto the dock. ? And how does it play without being requested ?

how does the iTune icon present itself onto the dock. ?
And how does it play without being requested ?

1. The SCB-68 is just a terminal block; it does not measure anything. The measurement is made on the board connected to the SCB-68.
2. Computer-based data acquisistion devices and 480 V motors with solid state speed controls do not "play nice," as the kids say. The connections you are trying to make may well end up with a fried data acquisition board, fried computer, and MOST IMPORTANTLY a fried USER!
Ground loop problems may produce noisy measurements or may destroy all the low current devices (like the computer) in the system.
Signal conditioners are not only to reduce noise but also to provide safe isolation between the high voltage and high power parts of the system and the more sensitive parts.
A thermocouple is a voltage generating device. The measurement system measures that voltage (typically millivolts) and independently measures the temperature of the "cold junction" of the thermocouple. The temperature at the hot junction of the thermocouple is calculated as Temperature(TC voltage difference) - Temperature(cold junction). If currents flow through the TC wires, due to ground potential differences between the motor frame and the computer ground for example, the voltage drop from Ohm's law is added to the TC voltage and will produce temperature errors. TC wire may have significantly higher resistance than wires used for most elelctrical signals so the interfering signal may be greater than the desired signal.
Lynn

How does the SecurityManager authorize with JAAS?

Hello,
I'm using java 1.3 and JAAS, trying to write my own Permission for authorization. How does the SecurityManager know to authorize a method for a Subject? Does the method that I want protected have to explicitly call checkPermission()?
The examples given are always for FilePermission. They show a program calling Subject.doAs() to perform an action as a particular Subject, and they imply that checkPermission() is called by the methods doing the file access.
Thanks

I think you
a) create a specific permission class (such as a "canDoThisPermission(String targetMethod)" class)
b) in your method check that the permission is granted by calling
checkPermission(new CanDoThisPermission(<methname>))
be sure your new permission class is being loaded from a trusted location (...lib/ext/... for eg.)

How does the .accept() method work?

Hi,
I have checked the source code of the ServerSocket implementation that comes with the jdk.
I tought I was going to find some type of loop. However I found nothing like that! so how does the accept method work.
I mean when we call the .accept() method, the thread in which the socketServer is initialized gets stoped untill a new client connection is recieved! how is this actually managed?
Regards,
Sim085

At a guess, the accept call that Java makes, relies on the OS system call through JNI. accept would then block until a new connection is present if you are using blocking.

GRC - Role Expert v5.2: how does the Transaction Usage functionality work

Hi All,
re: GRC - Role Expert v5.2: how does the Transaction Usage functionality work
We are implementing GRC suite v5.2, but specifically my question is regarding Role Expert:
SAP documentation states that it is possible to use Role Expert to do the following: for roles allows you to see if, or how much, a transaction is being used, when it was last used, and who used it.
My question is how without Audit Log or RBE?
Let me know if you have ever used this functionality and if it requires the SAP Back-End Audit Log to be turned on or RBE.
Thanks in advance!

Hi Gary,
You dont need a RBE tool activation to get the successful transaction usage log with Role Expert.
Role Expert functionality allows you to log all the transactions that have been added/deleted to the role that is changed. Also when you create a new role via the Role Expert then automatically the transaction log starts.
If you go the "History" tab in the Role Expert, then you can find all the last changes made to the role.
Also you can go to the "Risk Analysis" tab to find the log of Risk Analysis performed with the added tcodes.
Hope this helps.
Thanks,
Kiran Kandepalli.

How does the Mac App Store work?!

Hey guys i recently posted this quesiton in a different area of the community but instead of being helped was just ridiculed for posting in the wrong place... +1 for helpfulness guys :/ lol Anyways... ive been told to ask in the development section.. I have a $9.99 app and it was sitting at 10th place in the top grossing apps a few weeks ago on the UK app store, now I noticed in the morning that it was ahead of an app which was 49.99 so i presumed that I must have sold at least 5 or 6 to be ahead of him (my idea of top grossing is quantity x price) but when itunesconnect released their reports in the afternoon it turned out that i'd only sold 1 copy.. so what im asking is basically how does the top grossing section work? and how regularly does it update? is it live? daily? etc
Thanks in advance!

Your rank is better than the other app because you've made a sale while they've made none. When you make a sale, you jump in the charts, and after that you slowly go down if you don't make another sale. In other words, the bottom of the charts has many apps that didn't make any sale recently. I've also noticed that if you make some sales in other countries than the current chart, that'll very slightly improve your rank.

How does the SDK and Reader handle printing with orientation?

I have a document that I want to print, and it contains a portrait page on Page 1, and a landscape page on Page 2. Acrobat Reader correctly prints these pages (with a single print job), and I'm assuming it's because of the auto-rotate option on the print dialog. Is this a feature of Reader, the API, or how the printer handles the request. I've tried printing this PDF just using the JAva API, but the orientation remain portrait for all pages. How does the Adobe Acrobat API deal with mixed orientation pages? Ignore the fact that I did my test printing with Java, because my question is whether or not the auto orientation is a feature of the UI, the SDK, or the printer (or a combination).

Same as the current Ipod Video or "Classic" there is an option under settings to toggle between original aspect ratio or Full Screen.
Kenal0

How Does the scheduler works with ODI engine

Hi All,
I am new to the ODI and I was going through the documents over the web regarding the scheduling.
Can anyone please let me know how does the Scheduler in ODI is coupled with the ODI engine.
How does the internal scheduler works and how does the external one works. What are the processes the it calls while invoking the scheduler.
Your help will be highly appreciated.
Thanks,
Sumit

Scheduling in ODI is controlled by a special type of ODI agent, strangley called the ODI scheduling agent. This agent is installed as a service and as well as being responsible for all tasks associated with a normal agent is also responsible for managing ODI jobs based on any scheduling information associated with an ODI scenario. All scheduling information is stored in the ODI repository and the scheduler agent reads from this to determine which jobs/scenarios need to be executed and when.

How does the ADF support romote call method between two managed server ?

How does the ADF support romote call method between two managed server ?

You would usually use this as a WebService through the WSDL that is exposed.
JDeveloper can help you create a Java Proxy to call the Web service if you point it to the WSDL file that was generated for your AM.
Some other samples here:
http://www.connotea.org/user/jdeveloper/tag/Service%20Interface

How does the return method work?

how does the return method work?

What do you mean by "return method"? Methods return a value (or void, but that's still a "value" of sorts).
Returning a Value from a Method
http://java.sun.com/docs/books/tutorial/java/javaOO/methoddecl.html

How does the Java Gernerics being implemented?

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