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;  
}