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JAVA 산술연산자 산술 연산자 : + - * / %(나머지) //긁지않은 개발자 public class Ex01 { public static void main(String[] args) { int i = 20, j = 10; int k = i + j; System.out.println(i + " + " + j + " = " + k); //20 + 10 = 30 k = i - j; System.out.println(i + " - " + j + " = " + k); // 20 - 10 = 10 k = i * j; System.out.println(i + " * " + j + " = " + k); // 20 * 10 = 200 k = i / j; System.out.println(i + " / " + j +..

%(나머지) //긁지않은 개발자 public class Ex01 { public static void main(String[] args) { String birth1 = "123456"; int birth2 = 123456; System.out.println(birth2/10000); System.out.println(birth2/100%100); System.out.println(birth2%10000/100); System.out.println(birth2%100); System.out.println(birth1.substring(0,2)); System.out.println(birth1.substring(2,4)); System.out.println(birth1.substring(4)); } } 실..