获取指定字符串在另一个字符串中出现的次数

方法一

public int count(String srcText, String findText) {
        String[] array = srcText.split(findText);
        return array.length - 1;
}  

方法二

public static int count(String srcText, String findText) {
    int count = 0;
    Pattern p = Pattern.compile(findText);
    Matcher m = p.matcher(srcText);
    while (m.find()) {
        count++;
    }
    return count;
}  

方法三

public static int count(String srcText, String findText) {
    int count = 0;
    int index = 0;
    while ((index = srcText.indexOf(findText, index)) != -1) {
        index = index + findText.length();
        count++;
    }
    return count;
}