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package topica.io;
 
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
 
import topica.moduel.CanBo;
import topica.moduel.GiangVien;
import topica.moduel.NhanVien;
import topica.moduel.Time;
 
public class function implements Comparator<NhanVien>  {
 
 
 
	public static boolean addnhanvien(NhanVien nv,String path)
	{
		ArrayList<NhanVien> arr = docFile(path);
		if(arr==null)
		{
			arr = new ArrayList<>();
		}
		arr.add(nv);
 
		return luuFile(arr, path);
 
 
 
	}
 
 
public static  boolean luuFile(ArrayList<NhanVien> arr ,String path)
	{
 
 
		ObjectOutputStream oos = null;
		try {
 
			oos  = new ObjectOutputStream(new BufferedOutputStream(new FileOutputStream(path,false)));
			oos.writeObject(arr);
			return true;
 
		} catch (IOException e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		finally {
			try {
				oos.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
 
		return false;
 
	}
 
 
 
 
 
     @SuppressWarnings("unchecked")
	public static ArrayList<NhanVien> docFile(String path)
	{
		ArrayList<NhanVien> arr = new ArrayList<>();
		ObjectInputStream ois = null;
		try {
			ois = new ObjectInputStream(new BufferedInputStream(new FileInputStream(path)));
 
			Object o = ois.readObject();
			 arr = (ArrayList<NhanVien>) o;
			 return arr;
 
 
 
		} 
		catch (Exception e) {
			// TODO: handle exception
			e.printStackTrace();
		}
		finally {
 
			try {
				ois.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
 
		return null;
 
	}
 
 
 
 
	 public static NhanVien find(String str,String path)
	{
 
		ArrayList<NhanVien> arr = docFile(path);
 
		for (NhanVien nhanVien : arr) {
			if(nhanVien.getID().equals(str))
			{
				return nhanVien;
			}
 
		}
		return null;
	}
 
 
 
 
	 public static  void comparato(String path)
	 {
		 ArrayList<NhanVien> arr = docFile(path);
		 Collections.sort(arr,new function());
		 System.out.println("!--------------Mảng sau khi sắp xếp-----------!");
		 for (NhanVien nhanVien : arr) {
			System.out.println(nhanVien.toString());
		}
 
 
	 }
 
 
 
 
 
 
 
	@Override
	public  int compare(NhanVien o1, NhanVien o2) {
		// TODO Auto-generated method stub
		int value = o1.getName().compareTo(o2.getName());
		if(value!=0)
		{
			return value;
		}
		value = Time.compare(o1.getAge(),o2.getAge());
 
		return value;
 
	}
 
 
	public static int findID(String s ,String path)
	{
 
		ArrayList<NhanVien> arr = docFile(path);
 
		for (int i = 0; i < arr.size(); i++) {
 
			if(arr.get(i).getID().equals(s))
			{
				return i;
			}
 
		}
		return -1;
 
 
 
 
 
	}
 
 
 
 
 
 
 
}
 
 

Main.java:19: error: class function is public, should be declared in a file named function.java
public class function implements Comparator<NhanVien>  {
       ^
Main.java:14: error: package topica.moduel does not exist
import topica.moduel.CanBo;
                    ^
Main.java:15: error: package topica.moduel does not exist
import topica.moduel.GiangVien;
                    ^
Main.java:16: error: package topica.moduel does not exist
import topica.moduel.NhanVien;
                    ^
Main.java:17: error: package topica.moduel does not exist
import topica.moduel.Time;
                    ^
Main.java:19: error: cannot find symbol
public class function implements Comparator<NhanVien>  {
                                            ^
  symbol: class NhanVien
Main.java:23: error: cannot find symbol
	public static boolean addnhanvien(NhanVien nv,String path)
	                                  ^
  symbol:   class NhanVien
  location: class function
Main.java:39: error: cannot find symbol
public static  boolean luuFile(ArrayList<NhanVien> arr ,String path)
                                         ^
  symbol:   class NhanVien
  location: class function
Main.java:72: error: cannot find symbol
	public static ArrayList<NhanVien> docFile(String path)
	                        ^
  symbol:   class NhanVien
  location: class function
Main.java:107: error: cannot find symbol
	 public static NhanVien find(String str,String path)
	               ^
  symbol:   class NhanVien
  location: class function
Main.java:144: error: cannot find symbol
	public  int compare(NhanVien o1, NhanVien o2) {
	                    ^
  symbol:   class NhanVien
  location: class function
Main.java:144: error: cannot find symbol
	public  int compare(NhanVien o1, NhanVien o2) {
	                                 ^
  symbol:   class NhanVien
  location: class function
Main.java:25: error: cannot find symbol
		ArrayList<NhanVien> arr = docFile(path);
		          ^
  symbol:   class NhanVien
  location: class function
Main.java:74: error: cannot find symbol
		ArrayList<NhanVien> arr = new ArrayList<>();
		          ^
  symbol:   class NhanVien
  location: class function
Main.java:80: error: cannot find symbol
			 arr = (ArrayList<NhanVien>) o;
			                  ^
  symbol:   class NhanVien
  location: class function
Main.java:110: error: cannot find symbol
		ArrayList<NhanVien> arr = docFile(path);
		          ^
  symbol:   class NhanVien
  location: class function
Main.java:112: error: cannot find symbol
		for (NhanVien nhanVien : arr) {
		     ^
  symbol:   class NhanVien
  location: class function
Main.java:127: error: cannot find symbol
		 ArrayList<NhanVien> arr = docFile(path);
		           ^
  symbol:   class NhanVien
  location: class function
Main.java:130: error: cannot find symbol
		 for (NhanVien nhanVien : arr) {
		      ^
  symbol:   class NhanVien
  location: class function
Main.java:151: error: cannot find symbol
		value = Time.compare(o1.getAge(),o2.getAge());
		        ^
  symbol:   variable Time
  location: class function
Main.java:161: error: cannot find symbol
		ArrayList<NhanVien> arr = docFile(path);
		          ^
  symbol:   class NhanVien
  location: class function
21 errors

Standard output is empty