如何在字符串中找到全角字符的索引？

Question

I wrote a function to find a space (in full-width) in a String . But indexOf cant find it and returns -1 . This is my function:

public static String getflagCheck(String content) {

    List<String> supplierNames = Arrays.asList("//");
    String remark = "x";

    boolean flagValid = false;
    for (int i = 0; i < supplierNames.size(); i++) {
        int index =  content.indexOf(supplierNames.get(i));
        int indexTestPoint = content.indexOf("　");
        System.out.println(index);
        System.out.print(indexTestPoint + "\n\n");
        if(index > -1) {
                flagValid = true;
                if(indexTestPoint < index) {
                    flagValid = false;
                }
            break;
        } 
    }
    if(flagValid) {
        remark = "x";
    } else {
        remark = "needcheck";
    }
    return remark;
}

Answer 1

Your "space" at

int indexTestPoint = content.indexOf("　");

Isn't a space character but is a tab character. Replace it with a space.