How to deal with NoClassDefFoundError when using OpenCSV (Maven)?

Question

try {
    CSVReader input = new CSVReader(new FileReader("s.csv"));
    String[] data;
    while (( data = input.readNext()) != null) {
        String id = data[0];
        String name = data[1];
        String password = data[2];
        String number = data[3];
        String gender = data[4];
        String mail = data[5];
        String department = data[6];
    }
    for(int i=0;i<data.length;i++)    //length is the property of the array  
        System.out.println(data[i]);

    System.out.println("==========================");
}
catch (Exception ex) {
    System.out.println("hiiii");
}

I wanted to read the contents from a CSV file and print it in console. I have set the class path and everything is fine

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/lang3/ObjectUtils