Databases
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PO
 

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    <p>I didn't know of a utility to do it when I came across this problem, so I wrote the following:</p> <pre><code>public class Main { /** * */ private static String CLASS_FILE_TO_FIND = "class.to.find.Here"; private static List&lt;String&gt; foundIn = new LinkedList&lt;String&gt;(); /** * @param args the first argument is the path of the file to search in. The second may be the * class file to find. */ public static void main(String[] args) { if (!CLASS_FILE_TO_FIND.endsWith(".class")) { CLASS_FILE_TO_FIND = CLASS_FILE_TO_FIND.replace('.', '/') + ".class"; } File start = new File(args[0]); if (args.length &gt; 1) { CLASS_FILE_TO_FIND = args[1]; } search(start); System.out.println("------RESULTS------"); for (String s : foundIn) { System.out.println(s); } } private static void search(File start) { try { final FileFilter filter = new FileFilter() { public boolean accept(File pathname) { return pathname.getName().endsWith(".jar") || pathname.isDirectory(); } }; for (File f : start.listFiles(filter)) { if (f.isDirectory()) { search(f); } else { searchJar(f); } } } catch (Exception e) { System.err.println("Error at: " + start.getPath() + " " + e.getMessage()); } } private static void searchJar(File f) { try { System.out.println("Searching: " + f.getPath()); JarFile jar = new JarFile(f); ZipEntry e = jar.getEntry(CLASS_FILE_TO_FIND); if (e == null) { e = jar.getJarEntry(CLASS_FILE_TO_FIND); if (e != null) { foundIn.add(f.getPath()); } } else { foundIn.add(f.getPath()); } } catch (IOException e) { e.printStackTrace(); } } } </code></pre>
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