I don't know why my solution can't pass the test.

有关任务的问题

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The getPartOfString method must return the substring that begins with the character after the first space and ends with the end of the word that follows the 4th space.

Example:
"CodeGym is the best place to learn Java."

Result:
"is the best place"

Example:
"Amigo and Diego are best friends!"

Result:
"and Diego are best"

If the input data is invalid, throw a StringTooShortException (create an exception).

要求：

The StringTooShortException class must be a child of the RuntimeException class.
The getPartOfString method must have a String parameter.
If invalid data is passed to the getPartOfString method, a StringTooShortException should be thrown.
The getPartOfString method must return the substring that begins with the character after the first space and ends with the word that follows the 4th space.

package com.codegym.task.task22.task2202; /* Find a substring */ import java.util.ArrayList; public class Solution { public static void main(String[] args) { System.out.println(getPartOfString("CodeGym is the best place to learn Java.")); } public static String getPartOfString(String string) { try { ArrayList<String> list = new ArrayList<>(5); String totalString = string; for (int i =0;i<4;i++) { totalString = totalString.substring(totalString.indexOf(' ')+1); list.add(totalString.substring(0,totalString.indexOf(' '))); } return list.get(0)+" "+list.get(1)+" "+list.get(2)+" "+list.get(3); } catch (Exception e) { throw new StringTooShortException(); } } public static class StringTooShortException extends RuntimeException{ } }

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Lisa

级别 41

23 九月 2021, 15:36

Test, test, test a lot, especially test the borderline cases like:

System.out.println(getPartOfString("CodeGym is the best place"));

That's what CGs doing, too... yeah, yeah 😜🤪

AKUN

级别 25 ，Chongqing，China

25 九月 2021, 00:42

Thank you very much.