Java方法总结与源码解析（未完待续）

public class StringTo {
    public static void main(String[] args){
        String text = " We are students ";
        System.out.println("源字符串是：");
        System.out.println(text);
        System.out.println(text.trim());
        StringTokenizer st = new StringTokenizer(text," ");
        StringBuffer sb = new StringBuffer();
        int i = 1;
        while(st.hasMoreTokens()){
            i++;
            sb.append(st.nextToken());
        }
        System.out.println("去掉字符串中所有空格之后的字符串是：");
        System.out.println(sb.toString());
    }
}

 


  public boolean hasMoreTokens() {
        /*
         * Temporarily store this position and use it in the following
         * nextToken() method only if the delimiters haven't been changed in
         * that nextToken() invocation.
         */
        newPosition = skipDelimiters(currentPosition);
        return (newPosition < maxPosition);
    }




 private int skipDelimiters(int startPos) {
        if (delimiters == null)
            throw new NullPointerException();

        int position = startPos;
        while (!retDelims && position < maxPosition) {
            if (!hasSurrogates) {
                char c = str.charAt(position);
                if ((c > maxDelimCodePoint) || (delimiters.indexOf(c) < 0))
                    break;
                position++;
            } else {
                int c = str.codePointAt(position);
                if ((c > maxDelimCodePoint) || !isDelimiter(c)) {
                    break;
                }
                position += Character.charCount(c);
            }
        }
        return position;
    }