String 관련 메서드 package cote.velog; import java.util.ArrayList; import java.util.List; import java.util.Locale; public class grammer { public static void main(String[] args) { String str = "abcde"; int a = str.length(); boolean b = str.isEmpty(); System.out.println(a); System.out.println(b); int c = str.charAt(2); int d = str.indexOf("c"); int e = str.lastIndexOf("c"); String aa = str.substring(2,..
