- Exception
- CSDL
	- Console
	- Swing
- File
	- text
	- binary (Serialization + ObjectInputStream ...)
- Thread
	- 2 Thread
	- 3 Thread
- Đa ngôn ngữ
	- Swing
- Mã hoá -> Cipher -> Buổi sau

=====================================================
1) CSDL + Đa ngôn ngữ
2) CSDL + File + Đa ngôn ngữ
3) CSDL + File + Thread
4) CSDL + Thread
5) CSDL + Cipher
6) Exception + File + Thread

Code:

#HinhHoc.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson10;

/**
 *
 * @author Diep.Tran
 */
public abstract class HinhHoc {
    public abstract double tinhDienTich();
    
    public abstract double tinhChuVi();
    
    static public class Abc {
        String x, y;

        public Abc() {
        }

        public Abc(String x, String y) {
            this.x = x;
            this.y = y;
        }

        public String getX() {
            return x;
        }

        public void setX(String x) {
            this.x = x;
        }

        public String getY() {
            return y;
        }

        public void setY(String y) {
            this.y = y;
        }
    }
}

#HinhTron.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson10;

/**
 *
 * @author Diep.Tran
 */
public class HinhTron extends HinhHoc{
    float r;
    static int k;

    public HinhTron() {
    }

    public HinhTron(float r) {
        this.r = r;
    }

    @Override
    public double tinhDienTich() {
        return Math.PI * r * r;
    }

    @Override
    public double tinhChuVi() {
        return 2 * Math.PI * r;
    }
}

#Main.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson10;

/**
 *
 * @author Diep.Tran
 */
public class Main {
    public static void main(String[] args) {
        HinhTron hinhTron = new HinhTron(12.6f);
        double cv = hinhTron.tinhChuVi();
        
        System.out.println(cv);
        
        HinhTron h1 = new HinhTron();
        HinhTron.k = 10;
        
        HinhTron h2 = new HinhTron();
        HinhTron.k = 15;
        
        System.out.println("k1 = " + HinhTron.k);
        System.out.println("k2 = " + HinhTron.k);
        
        HinhHoc.Abc abc = new HinhHoc.Abc();
        abc.setX("10");
        
        //Anonymous class.
        HinhHoc h = new HinhHoc() {
            double x = 10, y = 100;
            
            @Override
            public double tinhDienTich() {
                return x * y;
            }

            @Override
            public double tinhChuVi() {
                return 2 * (x + y);
            }
        };
        System.out.println(h.tinhChuVi());
    }
}

#Test.java

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lesson10;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.FileHandler;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author Diep.Tran
 */
public class Test {
    public static void main(String[] args) throws IOException {
        IRunning r1 = () -> {
            System.out.println("R1 is running...");
        };
        r1.onRunning();
        
        IRunning r2 = () -> System.out.println("R1 is running...");
        r2.onRunning();
        
        IRunning2 r3 = (String msg) -> {
            System.out.println("okok ... " + msg);
        };
        r3.onRunning("12345");
        
        IRunning2 r4 = (a) -> {
            System.out.println("okok ... " + a);
        };
        r4.onRunning("12345");
        
        List<String> list = new ArrayList<>();
        list.add("12313");
        list.add("3432");
        list.add("sdfds");
        list.add("342423");
        
        list.forEach(s -> {
            System.out.println(s);
        });
        
        
        FileHandler handler = new FileHandler("data.log");
        Logger logger = Logger.getLogger(Test.class.getName());
        logger.addHandler(handler);
        logger.log(Level.INFO, "test....");
    }
    
    static interface IRunning {
        void onRunning();
    }
    
    @FunctionalInterface
    static interface IRunning2 {
        void onRunning(String msg);
    }
}