moozi

public class NumberCheck { public static void main(String[] args) {String s1="abcd";String s2="1234";System.out.println(isNumber(s1));System.out.println(isNumber(s2));} public static boolean isNumber(String str){ boolean result = false; try{ Integer.parseInt(str) ; result = true ; }catch(Exception e){} return result ; }}

java연습문제10

12/15 오전 수업자료