자바 문자열 자르기(빈공백 포함해서 자르기,빈공백 빼기)

Scanner 와 StringTokenizer 의 차이 (공백포함, 공백 비포함)code
import java.util.*; public class Main12 { public static void main(String[] args) { String s = ",abd,def,,ghi,"; String[] tokens = s.split(","); System.err.println("--- String.split Output ---"); System.err.println(String.format("%s -> %s", s, Arrays.asList(tokens))); for (int i=0; i<tokens.length; ++i) { System.err.println(String.format("tokens[%d] = %s", i, tokens[i])); } System.err.println("--- Scanner Output ---"); Scanner sc = new Scanner(s); sc.useDelimiter(","); while (sc.hasNext()) { System.err.println(sc.next()); } System.err.println("--- StringTokenizer Output ---"); StringTokenizer tok = new StringTokenizer(s, ","); while (tok.hasMoreTokens()) { System.err.println(tok.nextToken()); } } }
결과
$ java Main12 --- String.split Output --- ,abd,def,,ghi, -> [, abd, def, , ghi] tokens[0] = tokens[1] = abd tokens[2] = def tokens[3] = tokens[4] = ghi --- Scanner Output --- abd def ghi --- StringTokenizer Output --- abd def ghi