MySQL dumping and restoring in java

gistfile1.java

        File backupFile = new File("C:/Users/gevorg/backup.sql");
        String[] command = new String[]{"mysqldump ", "-uroot", "-proot", "test"};

        ProcessBuilder processBuilder = new ProcessBuilder(Arrays.asList(command));
        processBuilder.redirectError(Redirect.INHERIT);
        processBuilder.redirectOutput(Redirect.to(backupFile));

        Process process = processBuilder.start();
        process.waitFor();

        command = new String[]{"mysql ", "-uroot", "-proot", "test_new"};

        processBuilder = new ProcessBuilder(Arrays.asList(command));
        processBuilder.redirectError(Redirect.INHERIT);
        processBuilder.redirectInput(Redirect.from(backupFile));

        process = processBuilder.start();
        process.waitFor();

it doesn't work for me.
process.waitFor() never finishes and nothing is written to the backup file.