相关疑难解决方法(0)

我对Java中的StringPool感到困惑.我在阅读Java中的String章节时遇到过这个问题.请以外行的方式帮助我理解StringPool实际上做了什么.

Java String trim不会为我删除空格字符.

String rank = (some method);
System.out.println("(" + rank + ")");

输出是(1 ).注意1右边的空格.

我必须从字符串中删除尾随空格,rank但既不删除它rank.trim()也不rank.replace(" ","")删除它.

rank无论哪种方式,字符串都保持不变.

编辑:完整代码 ::

Document doc = Jsoup.connect("http://www.4icu.org/ca/").timeout(1000000).get();
Element table = doc.select("table").get(7);
Elements rows = table.select("tr");
for (Element row: rows) {
  String rank = row.select("span").first().text().trim();
  System.out.println("("+rank+")");
}

为什么我不能删除那个空间？

这就是我所拥有的:

public void readFile(String fileToOpen) {
    File myFile = new File(fileToOpen);
    try {
        Scanner inFile = new Scanner(myFile);
        while (inFile.hasNext()) {
            String input = inFile.nextLine();
            String [] readString = input.split(",");
            for (int i = 0; i < readString.length; i++) {
                readString[i].trim();
            }
            System.out.println(readString[0] + readString[1] + readString[2] + readString[3] + readString[4] + readString[5]);
            Point myPoint = new Point(Integer.parseInt(readString[1]), Integer.parseInt(readString[2]));
            if (readString[0].toLowerCase().equals("man")) {
                Man myMan = new Man(myPoint, Integer.parseInt(readString[3]), Integer.parseInt(readString[4]), readString[5]);
                this.myList.add(myMan);
            } else if (readString[0].toLowerCase().equals("woman")) {
                Woman myWoman = new …