根据传入字符串和截取个数分割字符串

package date0419;

public class Test01 {
	public static void main(String[] args) {
		String[] s=split("java4ever",2);
		for(int i=0;i<s.length;i++){
			System.out.print(s[i]+",");
		}
	}
	public static String[] split(String str, int chars) {
		String[] str1 = null;
		int len = (str.length() + chars - 1) / chars;
		str1 = new String[len];
		for (int i = 0; i < len; i++) {
			if (i < len - 1) {
				str1[i] = str.substring(i * chars, chars * (i + 1));
			} else {
				str1[i] = str.substring(i * chars);
			}
		}
		return str1;
	}
}