I would like to delete only the colon(:) with the code below and put it in the new variable.What code would be best to use?
String beginTime="9:45";
String endTime = "19:45";
Simply use String#replace(CharSequence,CharSequence).
beginTime.replace(":", "");
If you want to increase execution efficiency even a little, I think it's faster to use char[] by dividing the number of characters into four characters, but I don't think it's worth the trouble in practical use.
I don't know if it's best, but
Example using StringBuilder:
public static void main(String argv[]){
String beginTime = "9:45";
String bt = deleteColon(beginTime);
System.out.println(bt);
}
public static String deleteColon(String str) {
StringBuilder sb = new StringBuilder(str);
sb.deleteCharAt(sb.indexOf(":"));
return sb.toString();
}
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