get Hostname on Linux - Java Native OS

Java examples for Native OS:Shell Command

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Description

get Hostname on Linux

Demo Code


import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

public class Main{
    static public String getHostname() {
        return sysExec("/bin/hostname");
    }/*from w  w w.j  a  v a 2s  . c o  m*/
    static public String sysExec(String command) {
        String result = new String();
        try {
            Runtime runtime = Runtime.getRuntime();
            Process proc = runtime.exec(command);
            /*
             * Put a BufferedReader on the command output
             */
            InputStream inputstream = proc.getInputStream();
            InputStreamReader inputstreamreader = new InputStreamReader(
                    inputstream);
            BufferedReader bufferedreader = new BufferedReader(
                    inputstreamreader);
            /*
             * Read the command output
             */
            String line;
            while ((line = bufferedreader.readLine()) != null) {
                result += line;
                result += "\n";
            }
            /*
             * Check for command failure
             */
            try {
                if (proc.waitFor() != 0) {
                    System.err.println("exit value = " + proc.exitValue());
                }
            } catch (InterruptedException e) {
                System.err.println(e);
                throw new SystemUtilitiesException();
            }
        } catch (Throwable t) {
            t.printStackTrace();
        }
        return result;
    }
}

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