221229_SingleTon

익명클래스 1회성 객체생성..추상 클래스나 인터페이스..

 

package day19_AnonymousClass;

abstract class Japen {
	public abstract void out();
}
interface Korea {
	 public void insert();
}
public class AnonymousTest {
	public static void main(String[] args) {
		Japen jj = new Japen() {
			@Override
			public void out() {
				System.out.println("추상클래스 익명객체");
			}
		};
		Korea kk = new Korea() {
			@Override
			public void insert() {
				System.out.println("인터페이스 익명객체");
			}
		};
		jj.out();
		kk.insert();
	}
}

 

package day19_AnonymousClass;
class KoreaOut{
	String name;
	public KoreaOut(String name) {
		super();
		this.name = name;
	}
	class KoreaIn {
		int age;
		public KoreaIn(int age) {
			super();
			this.age = age;
		}
		public void out() {
			System.out.println("이름 : "+name);
			System.out.println("나이 : "+age);
		}
	}
}
public class NestedTest {
	public static void main(String[] args) {
		KoreaOut out = new KoreaOut("홍길동");
		KoreaOut.KoreaIn in = out.new KoreaIn(22);
		in.out();
	}
}

 

package day19_AnonymousClass;
class KoreaOut{
	String name;
	public KoreaOut(String name) {
		super();
		this.name = name;
	}
}
class KoreaIn extends KoreaOut{
	int age;
	public KoreaIn(String name, int age) {
		super(name);
		this.age = age;
	}
	public void out() {
		System.out.println("이름 : "+name);
		System.out.println("나이 : "+age);
	}
}
public class NestedTest {
	public static void main(String[] args) {
		KoreaIn in = new KoreaIn("홍길동",22);
		in.out();
	}
}

 

package day19_AnonymousClass;
class KoreaOut{
	String name;
	String address;
	public KoreaOut(String name, String address) {
		super();
		this.name = name;
		this.address = address;
	}
	class KoreaIn {
		int age;
		String phone;
		public KoreaIn(int age, String phone) {
			super();
			this.age = age;
			this.phone = phone;
		}
		public void out() {
			System.out.println("이름 : "+name);
			System.out.println("주소 : "+address);
			System.out.println("나이 : "+age);
			System.out.println("전화번호 : "+phone);
		}
	}
}
public class NestedTest {
	public static void main(String[] args) {
		KoreaOut out = new KoreaOut("홍길동","수원시팔달구");
		KoreaOut.KoreaIn in = out.new KoreaIn(22,"010-1234-1234");
		in.out();
	}
}

 

package day19_AnonymousClass;
class KoreaOut{
	String name;
	String address;
	public KoreaOut(String name, String address) {
		super();
		this.name = name;
		this.address = address;
	}
}
class KoreaIn extends KoreaOut{
	int age;
	String phone;
	
	public KoreaIn(String name, String address, int age, String phone) {
		super(name, address);
		this.age = age;
		this.phone = phone;
	}
	public void out() {
		System.out.println("이름 : "+name);
		System.out.println("주소 : "+address);
		System.out.println("나이 : "+age);
		System.out.println("전화번호 : "+phone);
	}
}
public class NestedTest {
	public static void main(String[] args) {
		KoreaIn in = new KoreaIn("홍길동","수원시팔달구",23,"010-1234-1234");	
		in.out();
	}
}

 

package day19_AnonymousClass;

public class DTO {
	String busea,name;
	int age;
	public DTO() {}
	public DTO(String busea, String name, int age) {
		super();
		this.busea = busea;
		this.name = name;
		this.age = age;
	}
	@Override
	public String toString() {
		return "DTO [부서명 : " + busea + ", 이름 : " + name + ", 나이 : " + age + "]";
	}
}

 

package day19_AnonymousClass;

import java.util.Scanner;

public class Menu {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		DAO dao = new DAO();
		while(true) {
			System.out.println("[1]데이터입력");
			System.out.println("[2]데이터출력");
			System.out.println("[0]종료");
			System.out.print("작업할 번호 입력");
			int n = sc.nextInt();
			switch (n) {
			case 0:System.exit(0);break;
			case 1:dao.insert();break;
			case 2:dao.out();break;
			}
		}
	}
}

 

package day19_AnonymousClass;

import java.util.ArrayList;

public class DAO {
	static String i ="인사팀";
	static String j ="자재팀";
	static String c ="총무팀";
	enum buse{i,j,c}; // i:인사팀 j:자재팀 c:총무팀
	ArrayList<DTO> list = new ArrayList<DTO>();
	public void insert() {
		list.add(new DTO(i,"홍길동",24));
		list.add(new DTO(j,"고고고",45));
		list.add(new DTO(c,"하하하",62));
		list.add(new DTO(i,"박박박",27));
		list.add(new DTO(c,"김김김",36));
	}
	public void out() {
		System.out.println("부서명\t이름\t나이");
		System.out.println("==================");
		for(DTO a:list) {
			System.out.println(a.toString());
		}
	}
}

 

package day19_AnonymousClass;

public class SampleDTO {
	String spname;
	int count,price,money;
	public SampleDTO() {}
	
	public SampleDTO(String spname, int count, int price) {
		super();
		this.spname = spname;
		this.count = count;
		this.price = price;
		this.money = count * price;
	}

	@Override
	public String toString() {
		return "SampleDTO [spname=" + spname + ", count=" + count + ", price=" + price + ", money=" + money + "]";
	}
}

 

package day19_AnonymousClass;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;

public class SampleDAO {
	ArrayList<SampleDTO> list = new ArrayList<SampleDTO>();
	public void insert() throws FileNotFoundException {
		FileReader fr = new FileReader("c:/data/12292.txt");
		BufferedReader br = new BufferedReader(fr);
		while(true) {
			try {
				String str = br.readLine();
				if(str==null)break;
				String spname = str.substring(0, 1);
				int su = Integer.parseInt(str.substring(1, 3));
				int dan = Integer.parseInt(str.substring(3, 7));
				if(spname.equals("a"))spname="사과";
				if(spname.equals("b"))spname="바나나";
				if(spname.equals("m"))spname="참외";
				list.add(new SampleDTO(spname,su,dan));
			}
			catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
	public void out() {
		System.out.println("상품명\t수량\t단가\t금액");
		System.out.println("============================");
		for(SampleDTO a:list) {
			System.out.println(a.toString());
		}
	}
}

 

package day19_AnonymousClass;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;

public class SampleDAO {
	enum name {
		a("사과"),b("바나나"),m("참외");
		private final String value;
		name(String value) {
			this.value = value;
		}
		public String getValue() {
			return value;
		}
	}
	ArrayList<SampleDTO> list = new ArrayList<SampleDTO>();
	public void insert() throws FileNotFoundException {
		FileReader fr = new FileReader("c:/data/12292.txt");
		BufferedReader br = new BufferedReader(fr);
		while(true) {
			try {
				String str = br.readLine();
				if(str==null)break;
				String spname = str.substring(0, 1);
				int su = Integer.parseInt(str.substring(1, 3));
				int dan = Integer.parseInt(str.substring(3, 7));
				list.add(new SampleDTO(name.valueOf(spname).getValue(),su,dan));
			}
			catch (IOException e) {
				e.printStackTrace();
			}
		}
	}
	public void out() {
		System.out.println("상품명\t수량\t단가\t금액");
		System.out.println("============================");
		for(SampleDTO a:list) {
			System.out.println(a.toString());
		}
	}
}

 

package day19_AnonymousClass;

import java.text.DecimalFormat;
import java.util.Random;
import java.util.Scanner;

public class RandomTest {

	public static void main(String[] args) {
		// 난수 - > 임의의 수 발생 .. Math, Random..
		// 주사위를 600번 던졌을때 1-6 까지 나온 횟수?
		Scanner sc =new Scanner (System.in);
		DecimalFormat df = new DecimalFormat("#,##0.000");
		int [] a = new int [6]; // 0~5
		Random rd = new Random();
		System.out.print("몇번 던질까요?");
		int su = sc.nextInt();
		
		for(int i=1;i<=su;i++) {
			int n = rd.nextInt(6)+1; // 주사위를 던져..값 1-6
			a[n-1]++; // n=1 이면 a[0]에 1추가
					  // n=2 이면 a[1]에 1추가
		}
		for(int i=0;i<=5;i++) {
			System.out.println((i+1)+"이 나온 횟수 : "+a[i]+"\t 비율 : "+df.format((double)a[i]/su*100)+"%");
		}
	}
}

 

package day19_AnonymousClass;

import java.util.Random;
import java.util.Scanner;

public class QuizTest {

	public static void main(String[] args) {
		Random rd = new Random();
		int n = rd.nextInt(100)+1;
		Scanner sc = new Scanner(System.in);
		int count=0;
		while(true) {
			count++;
			System.out.println("숫자를 입력하여 정답을 맞추세요");
			int dap = sc.nextInt();
			if(n>dap) System.out.println("정답은 "+dap+"보다 큽니다");
			else if(n<dap) System.out.println("정답은 "+dap+"보다 작습니다");
			else {
				if(count<=7) { 
					System.out.println("천재인가? 정답입니다! 당신은 "+count+"회만에 맞췄습니다");
				}
				else if(count<=12) {
					System.out.println("우수합니다. 정답입니다! 당신은 "+count+"회만에 맞췄습니다");
				}
				break;
			}
		}
	}
}