java String字符串解析实例整理

StringTokenizer tokenizer = new StringTokenizer(number, ",");
        boolean bool = true;
        while (tokenizer.hasMoreTokens()) {
            try {
                Double.valueOf(tokenizer.nextToken());
            } catch (Exception e) {
                bool = false;
            }
        }
//将字符串转化为数组的方法
int gv[];
   int i = 0; 
   StringTokenizer tokenizer = new StringTokenizer(goodsVolume, "，, ");
         gv = new int[tokenizer.countTokens()];//动态的决定数组的长度
     while (tokenizer.hasMoreTokens()) {
        String d = tokenizer.nextToken();
        gv[i] = Integer.valueOf(d);//将字符串转换为整型
        i++;
    }
 //字符串解析
    private String[] stringAnalytical(String str, String divisionChar) {
        String string[];
       int i = 0; 
        StringTokenizer tokenizer = new StringTokenizer(str, divisionChar);
        string = new String[tokenizer.countTokens()];// 动态的决定数组的长度
         while (tokenizer.hasMoreTokens()) {
            string[i] = new String();
            string[i] = tokenizer.nextToken();
            i++;
        }
        return string;// 返回字符串数组
    }
 int countTokens() 
          计算在生成异常之前可以调用此 tokenizer 的 nextToken 方法的次数。 
 boolean hasMoreElements() 
          返回与 hasMoreTokens 方法相同的值。 
 boolean hasMoreTokens() 
          测试此 tokenizer 的字符串中是否还有更多的可用标记。 
 Object nextElement() 
          除了其声明返回值是 Object 而不是 String 之外，它返回与 nextToken 方法相同的值。 
 String nextToken() 
          返回此 string tokenizer 的下一个标记。 
 String nextToken(String delim) 
          返回此 string tokenizer 的字符串中的下一个标记。 
public class StringAnalytical {
    // 字符串解析，将字符串转根据分割符换成字符串数组
    private String[] stringAnalytical(String string, char c) {
        int i = 0;
        int count = 0;
        if (string.indexOf(c) == -1)
            return new String[] { string };// 如果不含分割符则返回字符本身
        char[] cs = string.toCharArray();
        int length = cs.length;
        for (i = 1; i < length - 1; i++) {// 过滤掉第一个和最后一个是分隔符的情况
            if (cs[i] == c) {
                count++;// 得到分隔符的个数
            }
        }
        String[] strArray = new String[count + 1];
        int k = 0, j = 0;
        String str = string;
        if ((k = str.indexOf(c)) == 0)// 去掉第一个字符是分隔符的情况
            str = str.substring(k + 1);
        if (str.indexOf(c) == -1)// 检测是否含分隔符，如果不含则返回字符串
            return new String[] { str };
        while ((k = str.indexOf(c)) != -1) {// 字符串含分割符的时候
            strArray[j++] = str.substring(0, k);
            str = str.substring(k + 1);
            if ((k = str.indexOf(c)) == -1 && str.length() > 0)
                strArray[j++] = str.substring(0);
        }
        return strArray;
    }
    public void printString(String[] s) {
        System.out.println("*********************************");
        for (String str : s)
            System.out.println(str);
    }
    public static void main(String[] args) {
        String[] str = null;
        StringAnalytical string = new StringAnalytical();
        str = string.stringAnalytical("1aaa", '@');
        string.printString(str);
        str = string.stringAnalytical("2aaa@", '@');
        string.printString(str);
        str = string.stringAnalytical("@3aaa", '@');
        string.printString(str);
        str = string.stringAnalytical("4aaa@bbb", '@');
        string.printString(str);
        str = string.stringAnalytical("@5aaa@bbb", '@');
        string.printString(str);
        str = string.stringAnalytical("6aaa@bbb@", '@');
        string.printString(str);
        str = string.stringAnalytical("@7aaa@", '@');
        string.printString(str);
        str = string.stringAnalytical("@8aaa@bbb@", '@');
        string.printString(str);
        str = string.stringAnalytical("@9aaa@bbb@ccc", '@');
        string.printString(str);
        str = string.stringAnalytical("@10aaa@bbb@ccc@eee", '@');
        string.printString(str);
    }
}