Membandingkan fungsi split di J2ME

Split berguna untuk mendapatkan array of string dari suatu string dengan delimiter

contoh

"bangun,tidur,kuterus,coding,tidak,lupa,menggosok,gigi"

nanti maunya hasilnya adalah

variabel={"bangun","tidur","kuterus","coding","tidak","lupa","menggosok","gigi"}

Hasil perbandingan dari method split berikut

source code 1

static String[] split1(String in, char ch) {

String[] result = new String[2];

int pos = in.indexOf(ch);

if (pos != -1) {

result[0] = in.substring(0, pos).trim();

result[1] = in.substring(pos + 1).trim();

} else {

result[0] = in.trim();

}

return result;

}

source code 2:

public static String[] split(String str, String ch) {

java.util.Vector v = new java.util.Vector();

String tmp;

while (str.indexOf(ch) != -1) {

tmp = str.substring(0, str.indexOf(ch)).trim();

if (tmp.length() > 0) {

v.addElement(tmp);

}

str = str.substring(str.indexOf(ch) + 1, str.length());

}

int vs = v.size();

String[] returned = new String[vs];

if (vs > 1) {

for (int i = 0; i < vs; i++) {

returned[i] = (String) v.elementAt(i);

}

} else if (vs == 1) {

returned[0] = (String) v.elementAt(0);

}

return returned;

}

kemudian dieksekusi

Calendar cal = Calendar.getInstance();

cal.setTime(new Date());

System.out.println(cal.get(Calendar.MINUTE) + ":" + cal.get(Calendar.SECOND) + ":" + cal.get(Calendar.MILLISECOND));

for (int i = 0; i < 100000; i++) {

split("bangun,tidur,kuterus,coding,tidak,lupa,menggosok,gigi", ",");

}

cal.setTime(new Date());

System.out.println(cal.get(Calendar.MINUTE) + ":" + cal.get(Calendar.SECOND) + ":" + cal.get(Calendar.MILLISECOND));

for (int i = 0; i < 100000; i++) {

split1("bangun,tidur,kuterus,coding,tidak,lupa,menggosok,gigi", ",".charAt(0));

}

cal.setTime(new Date());

System.out.println(cal.get(Calendar.MINUTE) + ":" + cal.get(Calendar.SECOND) + ":" + cal.get(Calendar.MILLISECOND));

dan hasil pembulatan keatasnya rata2 nya

untuk method 1 adalah 11 detik

untuk method 2 adalah 1 detik