package com.test.teach;

import java.io.*;

public class Starter {
    public static  void main(String[] args){
        String formatedString = null;
        String[] arrayStringOfValues;
        String str;
        People p = new People();

        try {
            System.setOut(new PrintStream(System.out,false,"cp866"));
            FileWriter os = new FileWriter("C:\\data.txt");
            InputStreamReader isr=new InputStreamReader(
                    new FileInputStream("C:\\users.txt"),"windows-1251");
            BufferedReader in = new BufferedReader(isr);
            while (((str = in.readLine()) != null)) {
                // получили строку с данными, записали их в значение класса
                arrayStringOfValues = str.split(" ");
                p.setName(arrayStringOfValues[0]);
                p.setFamily(arrayStringOfValues[1]);
                p.setOtchestvo(arrayStringOfValues[2]);
                p.setGroup(arrayStringOfValues[3]);
                // собираем исходную строку
                formatedString = p.getGroup() + " " + p.getFamily() + " " + p.getName() + " " + p.getOtchestvo()+"\n";
                os.write(formatedString);
            }
            os.close();
            in.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

package com.test.teach;

public class People {
    String name;
    String family;
    String otchestvo;
    String group;

    public String getFamily() {
        return family;
    }

    public void setFamily(String family) {
        this.family = family;
    }

    public String getGroup() {
        return group;
    }

    public void setGroup(String group) {
        this.group = group;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getOtchestvo() {
        return otchestvo;
    }

    public void setOtchestvo(String otchestvo) {
        this.otchestvo = otchestvo;
    }
}