如何从Java中的字符串中删除不可见的[ZWSP]

Question

I have a String(assume str) received from some DB query. str = "+Aa​+Bk​+Bo​+Ac​+Lc​"; But if copied the same string to intelliJ, It shows the invisible chars in str

I have to split this String (iestr) to String[] and then to List. And getting this[ZWSP] in splatted Array and in converted List as well. Also tried few/following techniques to trim and remove this, but did not worked.

        String str = "+Aa​+Bk​+Bo​+Ac​+Lc​";
        String[] strArr = str.split("\\+");

        List<String> splitStrList = Arrays.stream(str.split("\\+"))
                .map(String::trim)
                .collect(Collectors.toList());

---Approach 2

        String[] array2 = Arrays.stream(strArr).map(String::trim).toArray(String[]::new);
       
        String[] trimmedArray = new String[array2.length];

        for (int i = 0; i < array2.length; i++) {
            trimmedArray[i] = array2[i].trim();
        }
        List<String> trimmedArrayList = Arrays.asList(trimmedArray);

Also few other approach, but while copying the output to intelliJ IDE seeing those [ZWSP] special chars. That is creating issue in further processing.

How Can be these spcl chars ie [ZWSP] removed to get List/Array like [, Aa​, Bk​, Bo​, Ac​, Lc​]

Will Appreciate all suggestions/solutions to this problem.

Answer 1

["

That character it's called zero-width space<\/a> as @Rogue mentions.<\/i>

str.replace("\u200B", "");