I have a string that has the value of name:score. I want to split the string into two strings, string a with the value of name and string b with the value of score.
What is the correct function/syntax to do this?
I have looked at string.split, but can not find the actual syntax to return the data into two separate strings.
The split function is suitable for that :
String[] str_array = "name:score".split(":");
String stringa = str_array[0];
String stringb = str_array[1];
You need to look into Regular Expressions:
String[] s = myString.split("\\:"); // escape the colon just in case as it has special meaning in a regex
Or you can also use a StringTokenizer.
: doesn't have any special meaning on its own
a{1,2} which matches a 1 or 2 times. A colon doesn't have any special meaning on its own.Use:
String [] stringParts = myString.split(":");
split returns substrings of the original string and does not actually move any character data. But you shouldn't care. String objects are immutable in Java, and their internal data are inaccessible to your code, so it can't make any difference in what you do later.String row = "name:12345";
String[] columns = row.split(":");
assert columns.length == 2;
String name = columns[0];
int score = Integer.parseInt(columns[1]);
Split creates an array with your strings in it:
String input = "name:score";
final String[] splitStringArray = input.split(":");
String a = splitStringArray[0];
String b = splitStringArray[1];
$ cat Split.java
public class Split {
public static void main(String argv[]) {
String s = "a:b";
String res[] = s.split(":");
System.out.println(res.length);
for (int i = 0; i < res.length; i++)
System.out.println(res[i]);
}
}
$ java Split
2
a
b
what if you have something like this a:1:2 name = a:1??
private String extractName(String str) {
String[] split = str.split(":");
return str.replace(split[split.length - 1], "");
}
private int extractId(String str){
String[] split = str.split(":");
return Integer.parseInt(CharMatcher.DIGIT.retainFrom(split[split.length-1]));
}