Question

如何在Java ME中用“a b”替换“a b”？

replace()方法不接受字符串，只接受字符。由于双空格包含两个字符，我认为我有一个小问题。

Answer 1

你觉得这个怎么样？我自己试了一次。

private String replace(String needle, String replacement, String haystack) {
    String result = "";
    int index = haystack.indexOf(needle);
    if(index==0) {
        result = replacement+haystack.substring(needle.length());
        return replace(needle, replacement, result);
    }else if(index>0) {
        result = haystack.substring(0,index)+ replacement +haystack.substring(index+needle.length());
        return replace(needle, replacement, result);
    }else {
        return haystack;
    }
}

Answer 2

您可以使用

Here's one function：

public static String replace(String _text, String _searchStr, String _replacementStr) {
    // String buffer to store str
    StringBuffer sb = new StringBuffer();

    // Search for search
    int searchStringPos = _text.indexOf(_searchStr);
    int startPos = 0;
    int searchStringLength = _searchStr.length();

    // Iterate to add string
    while (searchStringPos != -1) {
        sb.append(_text.substring(startPos, searchStringPos)).append(_replacementStr);
        startPos = searchStringPos + searchStringLength;
        searchStringPos = _text.indexOf(_searchStr, startPos);
    }

    // Create string
    sb.append(_text.substring(startPos,_text.length()));

    return sb.toString();
}

Java ME双空格中的字符串替换

2 个答案: