Recent changes to Calling methods from other Java language programs in your .xdef files

Calling methods from other Java language programs in your .xdef files modified by Curt Selak

Curt Selak — Fri, 14 Jul 2023 12:47:09 -0000

--- v35
+++ v36
@@ -4,7 +4,7 @@

 The only two files we will need besides [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download) and the XML source files are [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar) and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class), also linked above leading up to the exclamation mark. The files should be saved in the same directory as your copy of [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download). You still do not need to have the Java Developer's Kit (JDK) installed on your computer.

-In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202305_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202301_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.
+In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202306_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202301_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.

 The following X-definition code can be saved as a file to the same directory as the [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar)  and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class) files downloaded earlier:
 ```

Calling methods from other Java language programs in your .xdef files modified by Curt Selak

Curt Selak — Wed, 14 Jun 2023 12:31:55 -0000

--- v34
+++ v35
@@ -4,7 +4,7 @@

 The only two files we will need besides [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download) and the XML source files are [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar) and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class), also linked above leading up to the exclamation mark. The files should be saved in the same directory as your copy of [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download). You still do not need to have the Java Developer's Kit (JDK) installed on your computer.

-In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202304_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202301_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.
+In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202305_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202301_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.

 The following X-definition code can be saved as a file to the same directory as the [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar)  and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class) files downloaded earlier:
 ```

Calling methods from other Java language programs in your .xdef files modified by Curt Selak

Curt Selak — Wed, 17 May 2023 13:04:28 -0000

--- v33
+++ v34
@@ -4,7 +4,7 @@

 The only two files we will need besides [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download) and the XML source files are [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar) and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class), also linked above leading up to the exclamation mark. The files should be saved in the same directory as your copy of [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download). You still do not need to have the Java Developer's Kit (JDK) installed on your computer.

-In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202303_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202301_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.
+In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202304_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202301_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.

 The following X-definition code can be saved as a file to the same directory as the [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar)  and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class) files downloaded earlier:
 ```

Calling methods from other Java language programs in your .xdef files modified by Curt Selak

Curt Selak — Sat, 08 Apr 2023 17:21:13 -0000

--- v32
+++ v33
@@ -4,7 +4,7 @@

 The only two files we will need besides [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download) and the XML source files are [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar) and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class), also linked above leading up to the exclamation mark. The files should be saved in the same directory as your copy of [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download). You still do not need to have the Java Developer's Kit (JDK) installed on your computer.

-In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202302_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202301_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.
+In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202303_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202301_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.

 The following X-definition code can be saved as a file to the same directory as the [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar)  and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class) files downloaded earlier:
 ```

Calling methods from other Java language programs in your .xdef files modified by Curt Selak

Curt Selak — Sun, 12 Mar 2023 15:35:45 -0000

--- v31
+++ v32
@@ -4,7 +4,7 @@

 The only two files we will need besides [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download) and the XML source files are [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar) and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class), also linked above leading up to the exclamation mark. The files should be saved in the same directory as your copy of [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download). You still do not need to have the Java Developer's Kit (JDK) installed on your computer.

-In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202212_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202207_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.
+In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202302_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202301_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.

 The following X-definition code can be saved as a file to the same directory as the [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar)  and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class) files downloaded earlier:
 ```

Calling methods from other Java language programs in your .xdef files modified by Curt Selak

Curt Selak — Sun, 22 Jan 2023 17:54:03 -0000

--- v30
+++ v31
@@ -4,7 +4,7 @@

 The only two files we will need besides [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download) and the XML source files are [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar) and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class), also linked above leading up to the exclamation mark. The files should be saved in the same directory as your copy of [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download). You still do not need to have the Java Developer's Kit (JDK) installed on your computer.

-In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202207_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202207_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.
+In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202212_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202207_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.

 The following X-definition code can be saved as a file to the same directory as the [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar)  and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class) files downloaded earlier:
 ```

Calling methods from other Java language programs in your .xdef files modified by Curt Selak

Curt Selak — Sun, 14 Aug 2022 18:24:02 -0000

--- v29
+++ v30
@@ -4,7 +4,7 @@

 The only two files we will need besides [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download) and the XML source files are [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar) and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class), also linked above leading up to the exclamation mark. The files should be saved in the same directory as your copy of [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download). You still do not need to have the Java Developer's Kit (JDK) installed on your computer.

-In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202206_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202206_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.
+In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202207_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202207_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.

 The following X-definition code can be saved as a file to the same directory as the [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar)  and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class) files downloaded earlier:
 ```

Calling methods from other Java language programs in your .xdef files modified by Curt Selak

Curt Selak — Mon, 11 Jul 2022 13:14:08 -0000

--- v28
+++ v29
@@ -4,7 +4,7 @@

 The only two files we will need besides [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download) and the XML source files are [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar) and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class), also linked above leading up to the exclamation mark. The files should be saved in the same directory as your copy of [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download). You still do not need to have the Java Developer's Kit (JDK) installed on your computer.

-In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202205_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202205_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.
+In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202206_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202206_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.

 The following X-definition code can be saved as a file to the same directory as the [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar)  and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class) files downloaded earlier:
 ```

Calling methods from other Java language programs in your .xdef files modified by Curt Selak

Curt Selak — Sun, 19 Jun 2022 15:01:40 -0000

--- v27
+++ v28
@@ -4,7 +4,7 @@

 The only two files we will need besides [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download) and the XML source files are [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar) and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class), also linked above leading up to the exclamation mark. The files should be saved in the same directory as your copy of [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download). You still do not need to have the Java Developer's Kit (JDK) installed on your computer.

-In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202204_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202204_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.
+In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202205_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202205_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.

 The following X-definition code can be saved as a file to the same directory as the [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar)  and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class) files downloaded earlier:
 ```

Calling methods from other Java language programs in your .xdef files modified by Curt Selak

Curt Selak — Thu, 19 May 2022 13:36:44 -0000

--- v26
+++ v27
@@ -4,7 +4,7 @@

 The only two files we will need besides [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download) and the XML source files are [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar) and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class), also linked above leading up to the exclamation mark. The files should be saved in the same directory as your copy of [`xdef-beginner.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/xdef-beginner.jar/download). You still do not need to have the Java Developer's Kit (JDK) installed on your computer.

-In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBbasic_202204_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202204_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.
+In the general introduction, I briefly mentioned the British National Bibliography and the corresponding [download](https://www.bl.uk/bibliographic/downloads/BNBBasic_202204_rdf.zip) from the [British Library](https://www.bl.uk/collection-metadata/downloads). (I did not mention it throughout the tutorial because its XML markup can entail challenges not necessarily encountered elsewhere). Below, what we'll use instead is the British Library Integrated Catalogue, which although [downloadable](https://www.bl.uk/bibliographic/downloads/BLICBasicBooks_202204_rdf.zip) is really enormous. I'll furnish links to particular files extracted from the archive as we are going along, although I think that  downloading the whole thing is quite worth it.

 The following X-definition code can be saved as a file to the same directory as the [`Isbn.jar`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/Isbn.jar)  and [`IsbnInfo.class`](https://sourceforge.net/projects/x-definition-beginner-xml/files/java/IsbnInfo.class) files downloaded earlier:
 ```