Linki

Snippety

1. BufferedReader, BufferedWriter
   

   BufferedReader br = new BufferedReader(new FileReader(sPlik))
   BufferedWriter bw = new BufferedWriter(new FileWriter(sPlik));

2. exec
   

   aRuntime.getRuntime().exec("command", null, new File("katalog"));
   
   ProcessBuilder pb = new ProcessBuilder("latex", "/tmp/deal.tex");
   pb.directory(new File("/tmp"));
   pb.redirectErrorStream(true);
   pb.start().;
   
   // przekierować wyjście na System.out nie jest łatwo
   
   java.awt.Desktop.getDesktop().open("/tmp/deal.pdf");
   
   

3. regular expressions

   // $1 as a replacement, .*+ not greedy
   sJarName = System.getProperty("java.class.path").replaceFirst("^.*[\\\\/](.*jar).*$", "$1");

4. resources

   Class.forName("MagLab").getResourceAsStream

5. URLConnection
   

   URLConnection uc = new URL(sUrl + "/" + sFile).openConnection();
   uc.getInputStream();

6. XML
   

   Element doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new File(sOutFile)).getDocumentElement();
   NodeList lst = doc.getChildNodes();
   for (i=0; i<lst.getLength(); i++) {
     if (lst.item(i).getNodeName().equals("test:index")) {
       System.out.println(((Element)lst.item(i)).getAttribute("href"));
       }
     }