POSIX posix = POSIXFactory.getPOSIX(new POSIXHandler()
{
    @Override
    public void error(Errno errno, String s)
    {
    }

    @Override
    public void unimplementedError(String s)
    {
    }

    @Override
    public void warn(WARNING_ID warning_id, String s, Object... objects)
    {
    }

    @Override
    public boolean isVerbose()
    {
        return false;
    }

    @Override
    public File getCurrentWorkingDirectory()
    {
    return new File(".");
    }

    @Override
    public String[] getEnv()
    {
        return new String[0];
    }

    @Override
    public InputStream getInputStream()
    {
        return System.in;
    }

    @Override
    public PrintStream getOutputStream()
    {
        return System.out;
    }

    @Override
    public int getPID()
    {
        return 0;
    }

    @Override
    public PrintStream getErrorStream()
    {
        return System.err;
    }

}, true);
    
String[] args = new String[] {
  "/usr/bin/ssh", "lasker.skife.org"
};
posix.execv("/usr/bin/ssh", args);

<dependency>
    <groupId>com.github.jnr</groupId>
    <artifactId>jnr-posix</artifactId>
    <version>2.0</version>
</dependency>

<dependency>
    <groupId>com.github.jnr</groupId>
    <artifactId>jnr-ffi</artifactId>
    <version>0.6.0</version>
</dependency>

<dependency>
    <groupId>com.github.jnr</groupId>
    <artifactId>jnr-constants</artifactId>
    <version>0.8.2</version>
</dependency>