In Java, we can use the handy String’s method Split to split a string by the given delimiter into array of strings. Have you wondered how it is implemented? See below String Split function from JDK:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | public class StringUtils { public static String[] split(String input, char delimiter) { var v = new Vector(); boolean moreTokens = true; while (moreTokens) { int tokenLocation = input.indexOf(delimiter); if (tokenLocation > 0) { var subString = input.substring(0, tokenLocation); v.addElement(subString); input = input.substring(tokenLocation + 1); } else { moreTokens = false; v.addElement(input); } } var res = new String[v.size()]; for (int i = 0; i != res.length; ++i) { res[i] = (String)v.elementAt(i); } return res; } } |
public class StringUtils {
public static String[] split(String input, char delimiter) {
var v = new Vector();
boolean moreTokens = true;
while (moreTokens) {
int tokenLocation = input.indexOf(delimiter);
if (tokenLocation > 0) {
var subString = input.substring(0, tokenLocation);
v.addElement(subString);
input = input.substring(tokenLocation + 1);
} else {
moreTokens = false;
v.addElement(input);
}
}
var res = new String[v.size()];
for (int i = 0; i != res.length; ++i) {
res[i] = (String)v.elementAt(i);
}
return res;
}
}We repeatedly search for the delimiter using indexOf function, then push a substring to the vector, and keep doing this until no more token. Then, we convert the vector of tokens into an array.
–EOF (The Ultimate Computing & Technology Blog) —
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