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1 import java.io.BufferedReader  ;
2 import java.io.IOException ;
3 import java.io.InputStream ;
4 import java.io.InputStreamReader ;
5
6
7
15 public class version {
16 public static final String SAPIA_VERSION = "sapia.version";
17
18 public static void main(String [] args) {
19 InputStream is = findVersionStream("/META-INF/" + SAPIA_VERSION);
20
21 if (is == null) {
22 is = findVersionStream(SAPIA_VERSION);
23 }
24
25 if (is == null) {
26 System.out.println("Could not find " + SAPIA_VERSION +
27 " resource; version information could not be provided.");
28 } else {
29 processVersionStream(is);
30 }
31 }
32
33 private static void processVersionStream(InputStream is) {
34 BufferedReader reader = null;
35
36 try {
37 reader = new BufferedReader (new InputStreamReader (is));
38
39 String line;
40 System.out.println();
41
42 while ((line = reader.readLine()) != null) {
43 System.out.println(line);
44 }
45
46 System.out.println();
47 } catch (IOException e) {
48 e.printStackTrace();
49 } finally {
50 if (reader != null) {
51 try {
52 reader.close();
53 } catch (Throwable t) {
54 }
56 }
57 }
58 }
59
60 private static InputStream findVersionStream(String resource) {
61 InputStream is = Thread.currentThread().getContextClassLoader()
62 .getResourceAsStream(resource);
63
64 if (is == null) {
65 is = ClassLoader.getSystemResourceAsStream(resource);
66 }
67
68 if (is == null) {
69 is = version.class.getResourceAsStream(resource);
70 }
71
72 return is;
73 }
74 }
75
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Java API By Example, From Geeks To Geeks.