개발일지📝

import java.util.Scanner; public class Main{ public static void main(String[] args){ int a,b; Scanner sc = new Scanner(System.in); a = sc.nextInt(); b = sc.nextInt(); sc.close(); System.out.println(a+b); System.out.println(a-b); System.out.println(a*b); System.out.println(a/b); System.out.println(a%b); } }

import java.util.Scanner; public class Main{ public static void main(String[] args){ double a,b; Scanner sc = new Scanner(System.in); a = sc.nextDouble(); b = sc.nextDouble(); sc.close(); System.out.println(a/b); } }

import java.util.Scanner; public class Main{ public static void main(String[] args){ int a,b; Scanner sc = new Scanner(System.in); a = sc.nextInt(); b = sc.nextInt(); sc.close(); System.out.println(a*b); } }

import java.util.Scanner; public class Main{ public static void main(String[] args){ int a,b; Scanner sc = new Scanner(System.in); a = sc.nextInt(); b = sc.nextInt(); sc.close(); System.out.println(a-b); } }

import java.util.Scanner; public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); sc.close(); System.out.println(a+b); } } sc.close(); 객체 종료해줌으로써 자원 낭비 줄임

public class Main{ public static void main(String[] args){ System.out.println("|\\_/|"); System.out.println("|q p| /}"); System.out.println("( 0 )\"\"\"\\"); System.out.println("|\"^\"` |"); System.out.println("||_/=\\\\__|"); } } escape문자 \' \" \n \t \\

public class Main{ public static void main(String[] args){ System.out.println("\\ /\\"); System.out.println(" ) ( ')"); System.out.println("( / )"); System.out.println(" \\(__)|"); } } escape문자 \' \" \n \t \\

public class Main{ public static void main(String[] args){ System.out.print("강한친구 대한육군\n"); System.out.print("강한친구 대한육군"); } }

public class Main { public static void main(String[] args) { System.out.print("Hello World!"); } }​