Examples of java.io.File.canExecute()

java.io.File.canExecute()
Tests whether the application can execute the file denoted by this abstract pathname. @return true if and only if the abstract pathname existsand the application is allowed to execute the file @throws SecurityException If a security manager exists and its {@link java.lang.SecurityManager#checkExec(java.lang.String)} method denies execute access to the file @since 1.6

          File file = RegainToolkit.urlToFile(url);
          // Check whether the file is readable.
          if (!file.canRead()) {
            mCrawlerJobProfiler.abortMeasuring();
            mLog.debug("File rights: canRead: " + file.canRead() +
                    " canExecute: " + file.canExecute() +
                    " canWrite: " + file.canWrite() + " exists: " + file.exists() +
                    " for url: " + url + ", canonical url: " + file.getCanonicalPath());
            logError("File is not readable: '" + url + "'", null, false);
            continue;
          } else if (file.isDirectory()) {

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            } else return false;
        }


        private File findShell() {
            File f = new File("/bin/sh");
            if(f.exists() && f.canExecute()) return f;
            f = new File("/bin/bash");
            if(f.exists() && f.canExecute()) return f;
            System.err.println("Unable to find system shell");
            return null;
        }

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        private File findShell() {
            File f = new File("/bin/sh");
            if(f.exists() && f.canExecute()) return f;
            f = new File("/bin/bash");
            if(f.exists() && f.canExecute()) return f;
            System.err.println("Unable to find system shell");
            return null;
        }
      
        static final String RESTART_SCRIPT_NAME = "tempRestartFreenet.sh";

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        private File createRestartScript() throws IOException {
            // FIXME use nodeDir
            File runsh = new File("run.sh");
            String runshNoNice = "run.nonice-for-update.sh";
            if(!(runsh.exists() && runsh.canExecute())) {
                System.err.println("Cannot find run.sh so cannot deploy multi-file update for "+name);
                return null;
            }
            // EVIL HACK
            if(!createRunShNoNice(runsh, new File(runshNoNice))) {

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    private File which(String cmd) throws IOException {
        String path = System.getenv("PATH");
        if (path != null) {
          for (String dir : path.split(Pattern.quote(File.pathSeparator))) {
              File command = new File(dir.trim(), cmd);
              if (command.canExecute()) {
                  return command.getAbsoluteFile();
              }
          }
        }
        throw new IOException("No command '" + cmd + "' on path " + path);

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        javaExecs.add(System.getProperty("java.home") + "/bin/java");


        List<JavaInfo> result = Lists.newArrayList();
        for (String javaPath : javaExecs) {
            File javaFile = new File(javaPath);
            if (!javaFile.exists() || !javaFile.canExecute()) {
                continue;
            }


            try {
                result.add(new JavaInfo(javaPath));

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        String path=System.getenv("PATH");
        String fileSeparator=System.getProperty("file.separator");
        String pathSeparator=System.getProperty("path.separator");
        for(String dir:Splitter.on(pathSeparator).split(path)) {
            File target=new File(dir,cmd);
            if(target.canExecute()) {
                return target.getAbsolutePath();
            }
        }
        return null;
    }

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    @Test
    public void executeCommand_delegate() {
        Assume.assumeTrue("not unix-like", SystemUtils.IS_OS_MAC_OSX || SystemUtils.IS_OS_LINUX);


        File touch = new File("/usr/bin/touch");
        Assume.assumeTrue("no 'touch' command", touch.isFile() && touch.canExecute());


        final AtomicBoolean call = new AtomicBoolean();
        MockCommandEmulator.callback(new MockCommandEmulator.Callback() {
            @Override
            public void run(List<String> args) throws IOException, InterruptedException {

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                File bin = new File(p);
                if (bin.isDirectory() == false) {
                    continue;
                }
                File command = new File(bin, PATH_HADOOP_COMMAND_FILE);
                if (command.canExecute()) {
                    return command;
                }
            }
        }
        return null;

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        Map<String, String> envp = new HashMap<String, String>();
        envp.put("HADOOP_HOME", folder.getRoot().getAbsolutePath());


        File file = ConfigurationProvider.findHadoopCommand(envp);
        assertThat(file, is(notNullValue()));
        assertThat(file.toString(), file.canExecute(), is(true));
    }


    /**
     * search for hadoop command from PATH.
     */

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